Showing posts with label health. Show all posts
Showing posts with label health. Show all posts

Tuesday, February 5, 2013

Top Tips To Minimize Morning Sickness

According to US and UK data from public health authorities, morning sickness affects over half of all pregnant mothers. It is generally related to an increase in estrogen levels, low blood sugar counts, and a greater susceptibility to some smells. More often, morning sickness will be present in the early hours of the morning and will ease up somewhat as the day goes on.

Morning sickness is also known as nausea gravidarum, nausea, vomiting of pregnancy (emesis gravidarum), or pregnancy sickness.

At times, morning sickness can be mild. However, the pregnant mother may at other times feel so nauseous that she will vomit.

Even though morning sickness can be extremely unpleasant, it is hardly ever severe enough to cause metabolic derangement. In most cases, morning sickness settles down by the end of the first trimester.

Morning sickness is more likely to occur during the first three months of a pregnancy.

Here are a few tips you can put in to practice to minimize unpleasant morning sickness symptoms:
  1. Get plenty of rest.

    You must ensure you get a good night´s sleep - wear a sleep mask, or even dark glasses, to block out as much light as possible. You might also consider a maternity body pillow that will properly help you support your back and stomach.

    Sometimes taking naps during the day may help.

    Avoid moving around straight after eating.

    A pregnant woman resting

  2. Get up slowly

    Don't be in a hurry to get out of bed when you wake up. Take your time.

  3. Avoid some types of foods

    Avoid fatty and/or spicy foods. Avoid caffeine as well.

  4. Food portion sizes - have small ones.

    It is important to always have some kind of food in your stomach, as this will lower your chances of experiencing nausea - and if you do, most likely symptoms will be milder. If the stomach is empty, the acids have nothing to workon, except for the stomach lining, resulting in worsening nausea.

    Have some salty crackers, peanut butter snacks, or some other protein snack before you get out of bed in the morning.

    At breakfast, cold apple sauce, pears, bananas or any citrus fruit will help you feel satisfied early. Baked potatoes, although, less tasty for many, are highly nutritious. The fruit's potassium may help prevent morning sickness. At night, try eating something high in protein snack/meal before going to bed, as this will help regulate your blood-glucose levels.

    A selection of fruits

  5. Computer monitor flicker.

    The rapid, almost unnoticeable flickering of the computer monitor could cause morning sickness. If you are susceptible to morning sickness due to monitor flicker, try to avoid using a computer completely. If you must, you should adjust the screen by making the fonts bold and larger and changing the background to a soft tan or pink color - this will help reduce eye strain.

  6. Physical activity.

    Some mothers may find it hard to move around if they feel lousy. However, being physically active has been found to improve symptoms in many people.

  7. Fluid intake.

    Being hydrated is crucial for good health, and very important during pregnancy. Some mothers with morning sickness may not feel like consuming their recommended eight glasses of water per day, especially if their stomachs seem not to let them. However, the more dehydrated you are, the more nauseated you will become.

    If drinking water is hard, try adding apple cider vinegar and honey. Some mothers say flat Sprite helps, or decaffeinated cola. Sucking ice cubes made from water or fruit juice is also an effective method. The colder the drink, the easier it is to consume.

  8. Ginger.

    For many years, ginger has long been publicized as a stomach soother, and studies have shown that it may help relieve nausea symptoms. Sipping cold ginger ale, or adding a slice of raw ginger to water or tea may help sooth your stomach.

    Snacks such as gingerbread, or ginger cookies will all effectively help prevent nausea.

    A glass mug of ginger tea


  9. Keep your mind occupied.

    It is important to try to take your mind off the nauseous feelings. Finding things to do might not be easy. Reading a book, doing puzzles, watching television, playing cards, or going for short walks around the block will clear your mind and relax you. However, you must also listen to your body, and stop whenever necessary.

  10. Wear loose and comfortable clothing.

    Restrictive or tight clothing may exacerbate the symptoms of morning sickness. Studies have found that pregnant mothers with nausea who switched from tight to loose-fitting clothing reported either reduced symptoms or non at all.

  11. Consider using children's vitamins instead of regular pre-natal vitamins.

    Children's vitamins are usually easier to digest.

  12. Sniff fresh scents.

    Morning sickness is very much smell-associated - the pregnant mother becomes more sensitive to odors. Certain ugly smells, smells you cannot get away from, and potent smells such as perfumes can trigger an episode of unpleasant nausea. The most effective scents, according to self-reports, are lemon extract and/or rosemary.

    Some rosemary
    Fresh rosemary is a very effective scent for morning sickness

  13. Triggers

    There are several triggers that can bring on an episode of nausea and a general feeling of being unwell due to morning sickness. Most people will soon identify what they are. Avoid them as much as you can, and your frequency of nausea and/or vomiting will reduce, as will severity of symptoms.

  14. Acid reflux

    Sometimes, the nĂ¡usea and vomiting may be due to acid reflux. Taking antacid medication before going to bed may help reduce stomach acid levels, and the subsequent morning vomiting. Check with your doctor before buying any medication during pregnancy.

  15. Iron pills or iron-containing multivitamins

    Some pregnant women may become nauseous because of the iron supplements they have been told to take. Talk to your doctor and ask him/her to recommend a slower-release form, or even possible a lower dosage.

  16. Acupressure

    Applying pressure on specific points on the body to control symptoms has been shown to help some women with morning sickness. In this case, it involves wearing a special band on your forearm.
Hyperemesis gravidarum - excessive vomiting during pregnancy. This may lead to dehydration and malnutrition. A woman with hyperemesis gravidarum may weigh over 5% less than she did before she was pregnant.

About 1 in every 300 pregnant women develop hyperemesis gravidarum. The condition does not usually persist beyond the 20th week of pregnancy. The doctor may recommend dietary changes, plenty of rest and the use of antacids. In severe cases the patient may need to receive fluids and nutrition intravenously.

Source: http://www.medicalnewstoday.com/articles/37757.php

If you like this article, you must see:

A Broken Heart Breaks Your Heart, Literally !

Kids Need To Use More Sunscreen

A Broken Heart Breaks Your Heart, Literally !

According to an article published in Circulation: Journal of the American Heart Association, heart attack risk after bereavement is much higher for several weeks after the loss. The day the loved one dies, the risk of a heart attack is a stunning twenty one times higher.

The article also warns friends and family to look for signs of heart failure in the bereaved person, ensuring they relax and maintain any medication regime they may be on.

The study was conducted with nearly 2000 adult heart attack survivors and while the risk of a heart problem declined over the first month, it still remained at six times the normal risk during the first week after a loved one died.

Murray Mittleman, M.D., Dr.P.H., a preventive cardiologist and epidemiologist at Harvard Medical School's Beth Israel Deaconess Medical Center and School of Public Health's epidemiology department in Boston, Mass. said:

"Caretakers, healthcare providers, and the bereaved themselves need to recognize they are in a period of heightened risk in the days and weeks after hearing of someone close dying."


This is the first study of its kind to focus on the effects of emotional events in our lives, on the heart.

Broken heart syndrome is a well documented effect, but it is not thought to produce any lasting health problems, and while it may be true that those suffering from symptoms of a broken heart generally recover with no ill effect, it certainly appears that others, while not suffering from the "pseudo" heart attack of broken heart syndrome, jump straight into full blown symptoms and physical heart issues.

Researchers say that figures show that 1 in 320 people who are at high risk for heart failure and 1 in nearly 1,400 people who are at low risk, will suffer increased heart problems due to a bereavement. Additionally, the grieving spouses are more likely to die in the future, with heart attacks and strokes accounting for 53 percent of their deaths.

As part of the multicenter study, the scientists analyzed charts and talked with patients while in the hospital, after a confirmed heart attack between 1989 and 1994. Patients answered questions about circumstances surrounding their heart attack, as well as whether they recently lost someone significant in their lives over the past year, when the death happened, and the importance of their relationship.

Researchers used a case crossover design to compare patients over the past six months. The approach eliminated the possible confounding factors of comparing different people. The authors also estimated the relative risk of a heart attack by comparing the number of patients who had someone close to them die in the week before their heart attack, to the number of deaths of significant people in their lives from one to six months before their heart attack. Psychological stress, such as that caused by intense grief, can increase heart rate, blood pressure, and blood clotting, which can raise the chances of a heart attack.

The information should be particularly useful for healthcare professionals and family members alike. The grieving process can cause a person to get less sleep, have a lower appetite and higher cortisol levels, all of which are associated with heart attacks. It's also easy for a person who is in a state of emotional shock from a sudden loss, to neglect medications, fail to eat correctly, or eat more harmful foods, drink and smoke more, and so forth.

Elizabeth Mostofsky, lead author of the research said:

"Friends and family of bereaved people should provide close support to help prevent such incidents, especially near the beginning of the grieving process."


Her colleague Dr. Mittleman said:

"During situations of extreme grief and psychological distress, you still need to take care of yourself and seek medical attention for symptoms associated with a heart attack."


Heart attack signs include chest discomfort, upper body or stomach pain, shortness of breath, breaking into a cold sweat, nausea, or lightheadedness.

Co-authors Elizabeth Mostofsky, M.P.H, Sc.D.; Malcolm Maclure, Sc.D.; Jane Sherwood, R.N.; Geoffrey Tofler, M.D.; and James Muller, M.D. recommend a more in depth study of the issues.

The report doesn't make any mention of the age of the participants, you'd have to assume that it would be more likely to affect the elderly. They say that a divorce is worse than a death, since you have to reconcile not only the loss, but deal with a living person also, and whilst most heated divorces take place at a younger age, it would still be interesting to assess the effect of other emotional events such as this, on the bodies health, as well as the factor of age of a person.

Source: http://www.medicalnewstoday.com/articles/240135.php

If you like this article, you must see:

Top Tips To Minimize Morning Sickness

Kids Need To Use More Sunscreen

Kids Need To Use More Sunscreen

A study published in the journal Pediatrics shows that most pre-adolescent children do not regularly use sunscreen, and worse, many suffer from sunburn at some point during their childhood.

Figures show that people having suffered a major sunburn incident in their childhood are at double the risk of developing a melanoma later in life, so protecting children from too much sun is something parents and carers should pay more attention to.

The study, which is entitled "Prospective Study of Sunburn and Sun Behavior Patterns During Adolescence," looked at 360 children in the Massachusetts area and found that at least 50% of them experienced sun burn before their 11th birthday. They followed up with the participants three years later and found rates of sunburn still alarmingly high; and as children grew into their teens fewer reported using sunscreen, most thought they spent more time in the sun, than as children.

At the conclusion of the study, only 25% of children used sunscreen routinely and half the children who reported using sunscreen at the beginning of the study no longer used it three years later.

Stephen Dusza, lead author and a research epidemiologist at Memorial Sloan-Kettering Cancer Center.

"At the same time, there was a significant reduction in
reported sunscreen use."


Less is known about the activities of teenagers, but many, especially girls like to begin tanning - ideas are needed to promote sun protection at the beaches, after-school sites, as well as at sporting and other outdoor events.

Dusza plans to extend the study of the children into their late teens and gather more data about behaviors and fashions in regards to sun exposure.

Most participants in the study commented that they prefer the look of a tan, and thought people looked better with a tan. The number of children spending time in the sun to get a tan increased over the three year period. Dusza said :

"When you ask kids or teens about tanning, they say people look better with a tan, and tanning has a very positive association in kids of this age, so trying to get them to limit this behavior is a difficult message to get across."


Other dermatologists not involved in the study concurred with the sentiment, highlighting the need to get the message across to children and young teens that over-exposure to ultra violet light can be harmful. Something could quite easily be done to promote public awareness, much in the way that smoking has been reduced and people are generally aware of the tobacco issues. Even though, of course, there will always be those risk takers who prefer to go their own way, educating people to the risks will slowly make tanning less desirable and less fashionable.

Dr. Jonette Keri, associate professor of dermatology at the University of Miami's Miller School of Medicine said :

"This is the age group we need to make an impact on, because it gets harder to make an impact as they get into their later teen and early adult years."


The authors conclude :

"Along with educational efforts in physicians' offices and schools, further studies are required to learn how to interweave enhanced sun-protection policies in settings such as beaches, after-school sites, and sporting events frequented by preadolescences and adolescents."

Source: http://www.medicalnewstoday.com/articles/240652.php

If you like this article, you must see: 

A Broken Heart Breaks Your Heart, Literally !

Understanding Migraine Headaches

Tuesday, January 1, 2013

Understanding Migraine Headaches

Just about everyone has headaches, but a migraine isn't just a bad headache. A migraine headache is a complex condition of the nervous system. It's often described as an intense pulsing or throbbing pain that usually occurs in one area of the head. Migraine attacks may cause severe, debilitating pain for hours to days, necessitating the need to retreat to a dark, quiet place.
A migraine headache is often accompanied by additional symptoms, such as nausea, vomiting, and sensitivity to light and sound. About one-third of affected people can predict the start of a migraine because they experience sensory warning symptoms (also called "aura"). These early-warning symptoms may include flashes of light, blind spots, zig-zag lines, temporary loss of vision, or tingling in the arm or leg.

What Causes Migraines?
Scientists still don't know for certain what causes migraines. Migraines could involve disturbances in nerve pathways and brain chemicals that affect blood vessels near the brain's surface. The blood vessels swell, sending pain to the brain stem, an area that processes pain information. A genetic predisposition to migraine may exist, as it often runs in families.
Recurring migraine attacks are caused by a number of different triggers. Recognizing and recording individual triggers in a headache diary or calendar may be useful in helping to prevent future attacks.

How Can I Treat My Migraine Headache?
There is no cure for migraine. There are two ways to approach treating migraine with medicine. You can take medicine during attacks to relieve symptoms (acute treatment), or you can take medicine daily to prevent or reduce attacks and lessen the intensity of the pain (preventive treatment).
Acute treatment consists of over-the-counter pain relievers (or analgesics), such as acetaminophen, aspirin, and ibuprofen. If these products don't work for you, your doctor may prescribe medication that includes a stronger analgesic and/or a drug that acts more specifically on the cause of migraines. These migraine-specific treatments may include drugs from the "triptan" class (such as sumatriptan, almotriptan, or zolmitriptan), or "ergot-type" products such as dihydroergotamine nasal spray. If needed, drugs for nausea and vomiting may also be prescribed. The sooner these treatments are administered, the more effective they are.

If you have frequent migraine attacks, if your attacks don't respond consistently to migraine-specific treatments, or if acute medications are ineffective or can't be used because of other medical problems, preventive treatment may be prescribed. Certain drugs originally developed for epilepsy, depression, or high blood pressure have been shown to be effective in preventing migraine attacks. Botulinum toxin A, which is injected into muscles in the head and neck, has also been shown to be effective in prevention of chronic migraine.

What Are Rebound Headaches?
Rebound headaches (or medication-overuse headaches) are caused by frequent use of headache medication. They are also the most common cause of progression from episodic migraine (where attacks occur occasionally or infrequently) to chronic migraine (where attacks occur more frequently or regularly).
If you use acute over-the-counter and prescription drugs too often (more than two or three days per week), it can create a headache-worsening pattern that results in more headaches and the need to take more medicine. This pattern is harmful, and while in this cycle, other treatments often don't work. The only way to break this cycle is to stop the pattern of overuse, which should be done under a doctor's care.

Also, overuse of certain anti-inflammatory drugs, such as ibuprofen or naproxen sodium, may cause stomach irritation and even ulcers. Excessive use of acetaminophen may increase the risk of liver problems in certain people.

Just about everyone has headaches, but a migraine isn't just a bad headache. A migraine headache is a complex condition of the nervous system. It's often described as an intense pulsing or throbbing pain that usually occurs in one area of the head. Migraine attacks may cause severe, debilitating pain for hours to days, necessitating the need to retreat to a dark, quiet place.
A migraine headache is often accompanied by additional symptoms, such as nausea, vomiting, and sensitivity to light and sound. About one-third of affected people can predict the start of a migraine because they experience sensory warning symptoms (also called "aura"). These early-warning symptoms may include flashes of light, blind spots, zig-zag lines, temporary loss of vision, or tingling in the arm or leg.

What Causes Migraines?
Scientists still don't know for certain what causes migraines. Migraines could involve disturbances in nerve pathways and brain chemicals that affect blood vessels near the brain's surface. The blood vessels swell, sending pain to the brain stem, an area that processes pain information. A genetic predisposition to migraine may exist, as it often runs in families.
Recurring migraine attacks are caused by a number of different triggers. Recognizing and recording individual triggers in a headache diary or calendar may be useful in helping to prevent future attacks.

How Can I Treat My Migraine Headache?
There is no cure for migraine. There are two ways to approach treating migraine with medicine. You can take medicine during attacks to relieve symptoms (acute treatment), or you can take medicine daily to prevent or reduce attacks and lessen the intensity of the pain (preventive treatment).
Acute treatment consists of over-the-counter pain relievers (or analgesics), such as acetaminophen, aspirin, and ibuprofen. If these products don't work for you, your doctor may prescribe medication that includes a stronger analgesic and/or a drug that acts more specifically on the cause of migraines. These migraine-specific treatments may include drugs from the "triptan" class (such as sumatriptan, almotriptan, or zolmitriptan), or "ergot-type" products such as dihydroergotamine nasal spray. If needed, drugs for nausea and vomiting may also be prescribed. The sooner these treatments are administered, the more effective they are.

If you have frequent migraine attacks, if your attacks don't respond consistently to migraine-specific treatments, or if acute medications are ineffective or can't be used because of other medical problems, preventive treatment may be prescribed. Certain drugs originally developed for epilepsy, depression, or high blood pressure have been shown to be effective in preventing migraine attacks. Botulinum toxin A, which is injected into muscles in the head and neck, has also been shown to be effective in prevention of chronic migraine.

What Are Rebound Headaches?
Rebound headaches (or medication-overuse headaches) are caused by frequent use of headache medication. They are also the most common cause of progression from episodic migraine (where attacks occur occasionally or infrequently) to chronic migraine (where attacks occur more frequently or regularly).
If you use acute over-the-counter and prescription drugs too often (more than two or three days per week), it can create a headache-worsening pattern that results in more headaches and the need to take more medicine. This pattern is harmful, and while in this cycle, other treatments often don't work. The only way to break this cycle is to stop the pattern of overuse, which should be done under a doctor's care.

Also, overuse of certain anti-inflammatory drugs, such as ibuprofen or naproxen sodium, may cause stomach irritation and even ulcers. Excessive use of acetaminophen may increase the risk of liver problems in certain people.

Source: http://health.usnews.com/health-news/articles/2013/01/28/understanding-migraine-headaches?page=2

Monday, December 31, 2012

Spooked Sleeping? Identifying Nightmares and Their Causes


You wake up, panting, from a deep sleep. You went to work naked. You fell into a bottomless pit. You got swept into a tornado, and then fought off a wicked witch and flying monkeys in an unfruitful trek to Oz. If any of this sounds familiar, join the club. Research suggests that more than 85 percent of adults occasionally experience nightmares—at least once a month for 8 to 29 percent, and once a week for 2 to 6 percent. If you're someone who snoozes peacefully through the night, understand that nightmares are no ordinary dreams. They're "vivid, disturbing dreams, with an emotional connection that tends to wake us up," says Matthew Mingrone, an otolaryngologist and lead physician for EOS Sleep California centers.
If your slumber resembles a bad horror movie, learning about your nightmares and why they happen may help you sleep better.

Nightmares vs. Sleep Terrors
First, recognize that nightmares are not night terrors. The latter, also known as sleep terrors, happen earlier in sleep, during a non-rapid eye movement (REM) stage. Typically, you'd wake up in the first 90 minutes of sleep, perhaps panicked and yelling, with a much fuzzier memory of the dream than you'd have after a nightmare. Your heart rate may jump to 180 beats per minute during night terrors, says Tore Nielsen, director of the Dream and Nightmare Laboratory and a psychiatry professor at the University of Montreal. He adds that folks with night terrors can be destructive when they wake up—by fighting or jumping from windows—and yet, they often don't remember the episode later.

If the idea of sleep terrors sounds, well, nightmarish, at least it's only a reality for about 4 or 5 percent of adults. For the 85 percent of us who get plain old nightmares, you know the drill. "Nightmares occur primarily in the last third of the night, when your REM sleep is the strongest," Nielsen says. So if you go to bed at 10, a night terror would wake you with a fright around 11:30 p.m., whereas a nightmare would haunt you closer to 6 a.m. Sometimes nightmares wake us up, and sometimes they don't, but we can almost always remember the nightmare's plot to some extent.
What Causes Nightmares, and Who Gets Them?
"There are post-traumatic dreams, and there are idiopathic ones, which means we really don't know where they come from," says Nielsen. "It hasn't been scientifically documented very well." Generally, idiopathic nightmares don't reflect traumas, but perhaps intra-personal relationships, like those with spouses or parents, Nielsen adds.
Stress and anxiety can also lead to nightmares, says Mingrone. Job losses, break-ups, failed tests—although they're not considered traumas per say, these stressful events can all trigger a bout of bad dreams.

Nightmares have also been linked to certain medications, specifically those that affect neurotransmitter levels, such as antidepressents, narcotics, or barbiturates, according to a 2000 report in American Family Physician. People with depression, those relapsing from schizophrenia, and those experiencing withdrawal from alcohol and sedative-hypnotics may also face a higher risk.
There's another crew of nightmare-prone people that the report mentions: "Creative persons who demonstrate 'thin boundaries' on psychologic tests." Nielsen deciphers: "For some people, their mental boundaries are thinner in that they have much more access to their imaginative and emotional lives."
Getting Back to Sleep (If You Can)
"I don't think you can get back to sleep immediately, because you might be emotionally aroused quite a bit, or afraid," says Nielsen, adding that, if you do try to reclaim a few zzz's, evoke whatever relaxation techniques you know, like deep breathing and progressive muscle relaxation. Or "meditate on positive experiences," Mingrone suggests.

If it's clear you're too wound up to fall back asleep anytime soon, it may be best to get up for a half hour or so. "It couldn't hurt to write down the nightmare so you can reflect on it later," Nielsen says, or "try to re-script the nightmare so it's more to your liking."

Treatment
Only about five percent of adults have a clinical problem with nightmares, in that the dreams are so frequent and/or severe that they seek help. "It's really a question of how much distress it's causing," Nielsen says. If the nightmares are regularly disturbing your sleep, then you should probably visit a sleep clinic, where specialists can diagnose if your only problem is nightmares, or if you have something more serious, like sleep apnea.
"Sleep deprivation is like having a loan out from the bank," says Mingrone. "You've got to pay the sleep debt back."

For some, relief may come not from a sleep clinic, but from a psychologist's office. "The best way to avoid nightmares is to deal with any underlying anxiety problems," Nielsen says. The deep dark secret; the car crash that scarred you; the wicked aunt-turned witch—if these stressors are seeping into your dreams and disrupting precious REM sleep, it may be worth hashing it out consciously, with a specialist.
At the end of the day, or rather, at the end of the scary night, most people don't need or want treatment for nightmares. In fact, many don't mind them. "Often people come in and say [their nightmares] are a source of creativity or they're quite interested in them." Nielsen says. "They don't want to lose them."

source: http://health.usnews.com/

Wednesday, December 19, 2012

Monkeys Born From Stem Cells

The birth of three monkeys from a stem cell research program is being hailed as a major breakthrough in genetic engineering. It appears that the mouse stem cells widely used in studies, follow a different developmental process, that was previously thought to be identical to primate and human.

Scientists have opened a window to a new strategy, and one which has seemed out of reach for more than ten years. Now it is possible for cloning primate and even human stem cells, into living breathing organisms.

The monkeys were all male and appear to be healthy. The work, by developmental biologist Masahito Tachibana of the Oregon National Primate Research Center, was reported in the journal 'Cell'.

Instead of using embryonic stem cells cultured from lines of cells grown in petri dishes, the researchers used early-stage stem cells taken directly from monkey four-cell embryos to create 10 chimeric, or genetically mixed, embryos. The cells were combined from the early stage embryos, so the DNA was mixed, and the fetuses were incubated in female monkeys.

Three out of the four survived full term and are currently between four and six months old. They carry mixed DNA from six different genetic lineages. Genetically, it's as if they had as many as six parents, an impossibility naturally.

More interestingly, although they have both male and female DNA, they are all developing as males, because masculine genes have dominated the monkeys development.

The three rhesus monkeys, named Chimero, Roku and Hex, are said to be normal and healthy.

The researchers were able to make monkey chimeras only when they mixed cells from very early stage embryos, in which each individual embryonic cell was "totipotent". That means the cells are capable of growing into a whole animal as well as the placenta and other life-sustaining tissues.

It seems that scientists made a mistake by assuming that mimouse development would mirror human or primate development. The study also suggests that cultured primate and human embryonic stem cells, some of which have been frozen in labs for as long as two decades, may not be as potent as those found inside a living embryo.

Dr. Mitalipov one of the team members said :

"We cannot model everything in the mouse ... If we want to move stem cell therapies from the lab to clinics and from the mouse to humans, we need to understand what these primate cells can and can't do.
The work with stem cells is one of the holy grails of genetic engineering because it holds the possibility to grow new body parts, including replacement organs, and initially new nerve fibres for those who have suffered paralysis. It also bodes well for curing Parkinson's disease.

Source: http://www.medicalnewstoday.com/articles/240036.php

Tuesday, December 11, 2012

What Are The Top 10 Healthy Foods?

Imagine a selection of foods that were delicious, nutritious and good for you - i.e. they reduced your risk of developing diseases. According to several different surveys and sources in North America and Western Europe, the following ten foods are generally considered to be the most healthy.

1) Apples

Apples are an excellent source of antioxidants, which combat free radicals, damaging substances generated in the body that cause undesirable changes and are involved in the aging process and some diseases.

Some animal studies have found that an antioxidant found in apples (polyphenols) might extend lifespans. Tests on fruit flies found that polyphenols also help them to preserve their ability to walk, climb and move about.

Another study found that adult females who regularly ate apples had a 13% to 22% lower risk of developing heart disease.

Fuji apple
"An apple a day keeps the doctor away" is not just an old expression that rhymes

A recent article on the health benefits of apples:
"An Apple A Day Keeps The Grim Reaper Away"

2) Almonds

Almonds are rich in nutrients, including iron, calcium, vitamin E, fiber, riboflavin, and magnesium. A scientific review published in Nutrition Reviews last year found that almonds as a food may help maintain healthy cholesterol levels. The authors wrote:

"The message that almonds, in and of themselves, are a heart-healthy snack should be emphasized to consumers. Moreover, when almonds are incorporated into a healthy, balanced diet, the benefits are even greater."

The fatty acid profile of almonds, which is made up of 91-94% unsaturated fatty acids, may partly explain why it helps maintain healthy cholesterol levels. Almonds also have the highest fiber content of any tree nut.

Sa almonds
Almonds have more fiber than any other tree nut

A recent article on the health benefits of almonds:
"Research Review Suggests Almonds Contain Nutrients That Provide Cardioprotective Effects"

3) Broccoli

Broccoli is rich in fiber, folate, potassium, calcium and phytonutrients. Phytonutrients are compounds which reduce the risk of developing heart disease, diabetes and some cancers. Broccoli also contains beta-carotene, an antioxidant, as well as vitamin C.

Broccoli and cross section edit
Boiling broccoli for too long can destroy much of its vital nutrients

If the enzyme myrosinase is not destroyed during cooking, broccoli can also reduce the risk of developing cancer. The best way to cook broccoli and to preserve the myrosinase is to steam the vegetable lightly - if it is overcooked, and the vegetable's beneficial effects can be seriously undermined, researchers from the University of Illinois wrote in the peer-reviewed journal Nutrition and Cancer.

The researchers said that adding broccoli to a meal can often double its anticancer properties.

Another ingredient, sulforphane, which exists in broccoli, is also said to have anti-cancer as well as anti-inflammatory qualities. However, overcooking can destroy most of the benefits.

Broccoli powder does not contain myrosinase.

4) Blueberries

Blueberries are rich in phytonutrients, antioxidants and fiber.

According to a study carried out at Harvard Medical School, elderly people who eat plenty of blueberries (and strawberries) are less likely to suffer from cognitive decline, compared to other people of their age who do not.

Blueberries were found in another study carried out by scientists at Texas Woman's University, to help in curbing obesity. Plant polyphenols, which are abundant in blueberries, have been shown to reduce the development of fat cells (adipogenesis), while inducing the breakdown of lipids and fat (lipolysis).
Blueberries-Littleisland
Blueberries may help in controlling body weight

Regular blueberry consumption can reduce the risk of suffering from hypertension (high blood pressure) by 10%, because of the berry's bioactive compounds, anthocyanins, scientists from East Anglia University, England, and Harvard University, USA reported in the American Journal of Nutrition.

Blueberry consumption has also been associated with a lower risk of artery hardening, and/or intestinal diseases. The fruit has also been linked to stronger bones in animal studies.

5) Oily fish

Examples of oily fish include salmon, trout, mackerel, herring, sardines and anchovies. These types of fish have oil in their tissues and around the gut. Their lean fillets contain up to 30% oil, specifically, omega-3 fatty acids. These oils are known to provide benefits for the heart, as well as the nervous system. Oily fish are also known to provide benefits for patients with inflammatory conditions, such as arthritis.

Oily fish also contain vitamins A and D.

Scientists at UCLA's Jonsson Comprehensive Cancer Center found that prostate cancer progression was significantly slowed when patients went on a low-fat diet with fish oil supplements.

Sardin from sardegna 1
Oily fish are rich in omega-3 fatty acids

6) Leafy green vegetables

Studies have shown that a high intake of dark-leafy vegetables, such as spinach or cabbage may significantly lower a person's risk of developing diabetes type 2. Researchers from Leicester University, England, said that the impact of dark green vegetables on human health should be investigated further, after they gathered data from six studies.

Spinach, for example, is very rich in antioxidants, especially when uncooked, steamed or very lightly boiled. It is a good source of vitamins A, B6, C, E and K, as well as selenium, niacin, zinc, phosphorus, copper, folic acid, potassium, calcium, manganese, betaine, and iron.

Spinach
Boiling spinach can significantly reduce its levels of good nutrients.

7) Sweet potatoes

Sweet potatoes are rich in dietary fiber, beta carotene, complex carbohydrates, vitamin C, vitamin B6, as well as carotene (the pink, yellow ones).

The Center for Science in the Public Interest, USA, compared the nutritional value of sweet potatoes to other vegetables. The sweet potato ranked number one, when vitamins A and C, iron, calcium, protein and complex carbohydrates were considered.

Ipomoea batatas 006
Sweet potato roots are rich in fiber and several important nutrients

8) Wheat germ

Wheat germ is the part of wheat that germinates to grow into a plant - the embryo of the seed. Germ, along with bran, is commonly a by-product of the milling; when cereals are refined, the germ and bran are often milled out.

Wheat germ is high in several vital nutrients, such as vitamin E, folic acid (folate), thiamin, zinc, magnesium, phosphorus, as well as fatty alcohols and essential fatty acids.

Wheat germ is also a good source of fiber.

9) Avocados

Many people avoid avocados because of its high fat content; they believe that avoiding all fats leads to better health and easier-to-control body weight - this is a myth. Approximately 75% of the calories in an avocado come from fat; mostly monosaturated fat.

Alpukat
Weight-for-weight, avocadoes have 35% more potassium than bananas.

Avocados are also very rich in B vitamins, as well as vitamin K and vitamin E.

Avocados also have a very high fiber content of 25% soluble and 75% insoluble fiber.

Studies have shown that regular avocado consumption lowers blood cholesterol levels.

Avocado extracts are currently being studied in the laboratory to see whether they might be useful for treating diabetes or hypertension.

Researchers from Ohio State University found that nutrients taken from avocados were able to stop oral cancer cells, and even destroy some of the pre-cancerous cells.

10) Oatmeal

Oatmeal is meal made from rolled or ground oats, or porridge made from ground or rolled oats. In the United Kingdom and the Republic of Ireland, the term "porridge" or "porridge oats" are common terms for the breakfast cereal that is usually cooked.

Interest in oatmeal has increased considerably over the last twenty years because of its health benefits.

Studies have shown that if you eat a bowl of oatmeal everyday your blood cholesterol levels, especially if they are too high, will drop, because of the cereal's soluble fiber content. When findings were published in the 1980s, an "oat bran craze" spread across the USA and Western Europe. The oats craze dropped off in the 1990s.

In 1997, the FDA (Food and Drug Administration) agreed that foods with high levels of rolled oats or oat bran could include data on their labels about their cardiovascular heart benefits if accompanied with a low-fat diet. This was followed by another surge in oatmeal popularity.

Oats is rich in complex carbohydrates, as well as water-soluble fiber, which slow digestion down and stabilize levels of blood-glucose.

Oatmeal porridge is very rich in B vitamins, omega-3 fatty acids, folate, and potassium.

Oatmeal
Coarse or steel-cut oats contain more fiber than instant varieties.

Source: http://www.medicalnewstoday.com/articles/245259.php

Friday, December 7, 2012

Tumors Continue Growing Even When Cells Get Old

Based on the knowledge that cancer cells grow indefinitely, the general belief is that senescence could act as a barrier against tumor growth and has the potential of being used as a cancer treatment.

According to findings published in the 19th January issue of the open-access journal PLoS Computational Biology, a collaboration between a cancer biologist from the University of Milano, Italy, and two physicists, from the National Research Council of Italy and from Cornell University, has shown that although cell senescence occurs spontaneously in melanoma cells, it does not stop their growth, which is sustained by a small population of cancer stem cells.

The study examines the association between melanoma and senescence, which is the normal process in which cells decline and eventually stop duplicating after reaching maturity.

The researchers observed the long-term evolution of melanoma cell populations by monitoring the number of senescent cells, and discovered a slowing in growth with the majority of the cells turning senescent after three months. However, growth did not stop and was eventually resumed at its initial rate until the senescent cells had nearly disappeared.

The researchers applied a mathematical model of the experimental data using the cancer stem cell hypothesis, in which a sub-group of cancer cells multiply indefinitely, and therefore remain unaffected by senescence. These cancer stem cells produce a larger population of cancer cells, which are only able to replicate a certain number of times. The results of the model achieved an indirect confirmation that cancer stem cells are present in melanoma, an issue that remains to be controversial in the cancer research community.

The researchers conclude that even though a large percentage of cancer cells are susceptible to senescence, inducing senescence is unlikely to provide a successful therapeutic strategy because these cells are not important for tumor growth. The say however, that the indirect evidence of cancer stem cells in melanoma could potentially enable the development of new strategies for the treatment of specific types of cancer.

However, the strong resistance to drug induced senescence that may be found in the cancer stem cells will present a major challenge. Based on this study, treatment of tumors would concentrate on targeting only these cancer stem cells, instead of every single cancerous cell.


Source: http://www.medicalnewstoday.com/articles/240525.php

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Monday, December 3, 2012

How Many Calories Should I Eat?

The number of calories people should eat each day depends on several factors, including their age, size, height, sex, lifestyle, and overall general health. A physically active 6ft 2in male, aged 22 years, requires considerably more calories than a 5ft 2ins sedentary woman in her 70s.

Recommended daily calorie intakes also vary across the world. According to the National Health Service (NHS), UK, the average male adult needs approximately 2,500 calories per day to keep his weight constant, while the average adult female needs 2,000. US authorities recommend 2,700 calories per day for men and 2,200 for women. It is interesting that in the UK, where people on average are taller than Americans, the recommended daily intake of calories is lower. Rates of overweight and obesity among both adults and children in the USA are considerably higher than in the United Kingdom.

The NHS stresses that rather than precisely counting numbers (calories), people should focus more on eating a healthy and well balanced diet, being physically active, and roughly balancing how many calories are consumed with the numbers burnt off each day.

According to the United Nation's Food and Agriculture Organization (FAO), the average person's minimum calorie requirement per day globally is approximately 1,800 kilocalories.


Worldwide food consumption
Daily calorie consumption varies considerably around the world (countries in gray indicates "no data available")

What is the difference between calories and kilocalories?

Scientifically speaking, one kilocalorie is 1,000 calories. However, the term calorie in lay English has become so loosely used with the same meaning as kilocalorie, that the two terms have virtually merged. In other words, in most cases, a calorie and kilocalorie have the same meaning.

A kilocalorie is the amount of energy required to raise the temperature of 1 kilogram of water from 15° to 16° Celsius (centigrade) at one atmosphere.

A "small calorie" refers to the traditional scientific term of calorie, meaning one-thousandth of a kilocalorie.

Internationally, most nations talk about food energy in kJ (kilojoules). 1 kcal (kilocalorie) = 4.184 kJ.

In this article, the term "calorie" means the same as "kilocalorie" or "kcal".

Portion sizes

In industrialized nations and a growing number of emerging economies, people are consuming many more calories than they used to. Portion sizes in restaurants, both fast food ones as well as elegant places, are far greater today.

Comparing cheeseburger sizes over the last 20 years
The average cheeseburger in the USA 20 years ago had 333 calories, compared to the ones today with over 600 calories

The human body and energy usage

For the human body to remain alive, it requires energy. Approximately 20% of the energy we use is for brain metabolism. The majority of the rest of the body's energy requirements are taken up for the basal metabolic requirements - the energy we need when in a resting state, for functions such as the circulation of the blood and breathing.

If our environment is cold, our metabolism increases to produce more heat to maintain a constant body temperature. When we are in a warm environment, we require less energy.

We also require mechanical energy for our skeletal muscles for posture and moving around.

Respiration, or specifically cellular respiration refers to the metabolic process by which an organism gets energy by reacting oxygen with glucose to produce carbon dioxide, water and ATP energy. How efficiently energy from respiration converts into physical (mechanical) power depends on the type of food eaten, as well as what type of physical energy is used - whether muscles are used aerobically or anaerobically.

Put simply - we need calories to stay alive, even if we are not moving, and need calories to keep our posture and to move about.

How many calories do I need per day?

The Harris-Benedict equation, also known as the Harris-Benedict principle, is used to estimate what a person's BMR (basal metabolic rate) and daily requirements are. The person's BMR total is multiplied by another number which represents their level of physical activity. The resulting number is that person's recommended daily calorie intake in order to keep their body weight where it is.

This equation has limitations. It does not take into account varying levels of muscle mass to fat mass ratios - a very muscular person needs more calories, even when resting.

How to calculate your BMR
  • Male adults
    66.5 + (13.75 x kg body weight) + (5.003 x height in cm) - (6.755 x age) = BMR
    66 + ( 6.23 x pounds body weight) + ( 12.7 x height in inches ) - ( 6.76 x age) = BMR

  • Female adults
    55.1 + (9.563 x kg body weight) + (1.850 x height in cm) - (4.676 x age) = BMR
    655 + (4.35 x kg body weight) + (4.7 x height in inches) - (4.7 x age) = BMR

How much should I weigh?

As with how many calories you should consume each day, your ideal body weight depends on several factors, including your age, sex, bone density, muscle-fat ratio, and height.
  • BMI (Body Mass Index) - some say BMI is a good way of working out what you should weigh. However, BMI does not take into account muscle mass. A 100-metre Olympic champion weighing 200 pounds (about 91 kilograms), who is 6 feet (about 1mt 83cm) tall, who has the same BMI as a couch potato of the same height, is not overweight, while the couch potato is overweight.

  • Waist-hip ratio - this measurement is said to be more accurate at determining what your ideal weight should be, compared to BMI. However, waist-hip ratio does not properly measure an individual's total body fat percentage (muscle-to-fat ratio), and is also limited.

  • Waist-to-height ratio - this new way of determining ideal body weight is probably the most accurate one available today. It was presented by Dr. Margaret Ashwell, ex-science director of the British Nutrition Foundation, and team at the 19th Congress on Obesity in Lyon, France, on 12th May, 2012. It is also a very simple calculation; easy for lay people to work out.
Dr. Ashwell's team found that:

"Keeping your waist circumference to less than half your height can help increase life expectancy for every person in the world."


Put simply, to achieve and/or maintain your ideal body weight:
    "Keep your waist circumference to less than half your height."
If you are a 6ft (183cm) tall adult male, your waist should not exceed 36 inches (91 cm).
If you are a 5ft 4 inches (163 cm) tall adult female, your waist should not exceed 32 inches (81 cm)

How do I measure my waist? - according to the World Health Organization (WHO), you should place the tape-measure half-way between the lower rib and the iliac crest (the the pelvic bone at the hip).

Not all calories are the same, not all diets are the same

Simply counting calories, and ignoring what you put in your mouth might not lead to good health. Insulin levels will rise significantly more after consuming carbohydrates than after eating fats (no rise at all) or protein. Some carbohydrates, also known as carbs, get into the bloodstream in the form of sugar (glucose) much faster than others. Refined flour is a fast carb, while coarse oatmeal is slow. Slow-release carbs are better for body weight control and overall health than fast carbs.

A 500-calorie meal of fish/meat, salad, and some olive oil, followed by fruit, is much better for your health and will keep you from being hungry for longer than a 500-calorie snack of popcorn with butter or toffee.

A chef's salad
Taking 500 calories from this dish is much better for the health, preventing hunger, and maintaining a healthy body weight than the equivalent calories in popcorn with butter or toffee

There are several diets today which claim to help people lose or maintain their body weight. Some of them have been extremely successful and good for participants, but are notoriously difficult to adhere to long-term.

source: http://www.medicalnewstoday.com/articles/245588.php

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Saturday, December 1, 2012

What are Blackheads? How to Get Rid of Blackheads

A blackhead, or open comedo is a wide opening on the skin with a blackened mass of skin debris covering the opening. Despite their name, some blackheads can be yellowish in color. A comedo is a widened hair follicle which is filled with skin debris (keratin squamae), bacteria and oil (sebum).

A closed comedo is a whitehead, while an open comedo is a blackhead. the plural of "comedo" is comedomes".

Blackheads are said to be the first stage of acne. They form before bacteria invade the pores of the patient's skin. A blackhead can develop into a pimple, which is also known as a papule or pustule.

Blackheads, and acne in general, usually develop after puberty, when hormone levels surge and reach the skin. The presence of higher levels of hormones in the skin triggers the stimulation of the sebaceous glands, which produce oily substances. The sebaceous glands produce too much oil in the pores, which accumulates and gets stuck. When the occluded oil is exposed to air it becomes black.

Several conditions and circumstances can cause blackheads, or make them worse, such as the use of topical oils and make up. Blackheads can affect people with any type of skin, but are generally more common in those with oily skin.


Blackheads
Blackheads on a man's nose

What are the causes of blackheads

The overproduction of oil is the main cause of the emergence of blackheads. This is likely to occur in a high proportion of humans during puberty. Spikes in hormone production can result in the high levels of DHT (dihydrotestosterone), a hormone which triggers overactivity in the oil glands, resulting in clogged pores.

Clean skin - if the skin is not cleaned properly, more blackheads can appear, especially during those milestones in life when they are more prevalent, such as puberty. Improperly cleaned skin makes it more likely that dead skin cells build up within the pores. The pore openings can become clogged, which accelerates the build up of oil inside - thus causing blackheads to form. However, many experts warn that dirt does not cause blackheads to form - which frequently confuses and frustrates patients. Blackheads are caused by oxidized oil, not dirt, experts add. Over-cleaning the skin can lead to irritation.

In some cases, blackheads can emerge if moisturizers, sun screens, make up, or foundations are overused.

In the majority of cases, blackhead susceptibility is not heredity, with the exception of some severe acnes.

Food does not cause acne - although parents and grandparents commonly tell their teenage offspring not to eat chocolates and greasy foods, because they think they encourage the formation of acne - they do not cause blackheads or make them worse. Some studies have pointed towards a link between some dairy products and acne, but the evidence is not compelling.

Stress - stress does not directly affect blackhead occurrence. However, stress and anxiety can cause people to pick at their blackheads and acne, which may make them worse. Put simply, the behaviors resulting from stress and anxiety may worsen acne symptoms, but not the stress/anxiety itself.


What are the treatment options for blackheads

Hormonal treatments - contraceptives have often been used for the treatment of blackheads and acne, often with good results.

Cleaning the skin - clean your face with a good cleanser, ideally, one for oily skin, such as a salicylic acid cleanser.

Medications - adapalene is a third-generation topical retinoid, used mainly in the treatment of mild to moderate acne. Many patients with blackheads have had good results. In the USA adapalene is available under brand name Differin, in three preparations - 0.1% cream, 0.1% gel, and 0.3% gel. Since 2010, it has also been available in the USA under the generic name Teva, (0.1% gel). Only the 0.1% cream and 0.1% gel forms are available in Europe.

UV exposure - exposing the skin to sunlight or ultra-violet light encourages it to peel, which helps unblock pores. Sunbathing or using sunbeds may help. However, it is important to discuss this with your doctor. Exposing skin to sunlight, if overdone, also raises the risk of burning and developing skin cancer.

Hair - greasy hair touching the face of your skin can spread infection and in some cases encourage the spread of blackheads and acne. Keeping your hair away from your face may help keep blackheads to a minimum.

Skin virus may fight blackheads and acne - a virus that lives on our skin seems to naturally seek out and destroy the bacteria responsible for blackheads and zits. Researchers from the University of Pittsburgh said that harnessing a virus that naturally preys on the bacteria that cause pimples could offer an extremely useful tool against this skin condition.

source : http://www.medicalnewstoday.com/articles/71615.php

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