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Feb 05
Too much screen time risky for asthmatic kids
WASHINGTON: Too much screen time can have an adverse impact on the health of urban children with asthma, according a new study.
The urban children with asthma engage in an average of an hour more of screen time daily.

"We know that both asthma and excessive screen time can be associated with other difficulties, including behaviour problems, difficulty with attention, poor school performance and obesity," said Kelly M. Conn, M.P.H., of General Pediatrics at Golisano Children's Hospital at Strong and lead author of the study.

During the study, the researchers surveyed parents of urban children with asthma in Rochester, NY, to better understand their screen time viewing habits.

The screen time includes TV watching and video tapes, playing video and computer games and using the Internet.

The study found that 74 percent of the 226 children whose parents were surveyed exceeded more than two hours of screen time per day. On average, these children with asthma watched 3.4 hours daily.

The widespread presence and popularity of screen time activities in children's lives makes monitoring and setting limits for screen use very difficult. In addition, in an urban setting, safety concerns often limit a child's ability to engage in activities outside of the home.

Even though the goals of asthma therapy are to quell asthmatic symptoms and prevent limitations with activities, about 63 percent of children used screen time when their asthma symptoms physically limited their activities.

Those children who used screens when they were having physically limiting symptoms used an average of 3.67 hours daily, which is more than half an hour extra daily than children who engaged in other non-physical activities such as resting, reading or colouring.

Children with asthma most likely watch a similar amount of screen time to all children, but children with asthma are more at risk for the health problems associated with too much screen time.

Conn suggests that parents of children with asthma can encourage a variety of alternate activities for their child, including reading, drawing and arts and crafts, or playing board games or puzzles.

In addition, if a child is experiencing limitation of activity due to their asthma, parents should speak with their child's medical provider about ways to improve their asthma control.

"It is not unreasonable or uncommon for children to watch TV or play a video game when they are not feeling well or when they need to slow down their activity," said Conn.

"For all children, it is important for parents to be aware of how much screen time their children have and the types of programs they are watching," she added.

Feb 05
Working men more prone to eye injuries
SYDNEY: Working men are more likely than women to suffer eye injuries, according to an Australian report released on Thursday
The report by Australian Institute of Health and Welfare (AIHW) said about half the visits to the general practitioner for eye injuries were associated with a foreign body in the eye. Four-fifths of those visits involved men - the majority of whom were of working age.

"While eye injuries constitute just 0.2 percentage of GP (general practitioner) visits, they make up about six percent of emergency department visits," Clare Bradley of AIHW'S National Injury Surveillance Unit was quoted as saying in a statement by the institute.

"A foreign body in the eye was also the most common reason for treatment in the emergency department and eye-related injury compensation claims, with the median time lost from work being about a week and a half," said Bradley.

"Conversely, fractures of the bones around the eye and superficial injury around the eye were the most common first diagnoses for hospitalized eye injuries," she added.

About a quarter (23 percent) of emergency department visits were due to a person being struck by, or colliding with, an object. Another 12 percent were due to being struck by, or colliding with, another person.

Feb 04
High Dietary Intake Of Salt Ups Hypertension, Stroke Risk
Health experts are urging people to avoid food with high salt content because it may lead to health problems like hypertension and strokes.

Dr. Ken Flegel, Dr. Peter Magner and the CMAJ editorial team write that added salt in diets is unnecessary.


They insist that customers must be vigilant, read food labels, and demand low salt food in stores and restaurants.

"Of the estimated one billion people living with hypertension, about 30 per cent can attribute it to excess salt intake," write the authors.

According to them, populations, such as the Yanomami Indians in South America, with very low levels of salt intake do not have hypertension.

In contrast, Japan, with a salt intake of 15 g per person, has high rates of hypertension and the highest stroke rates in the industrialized world.

The authors recommend a maximum daily intake of 2.8 g for active young people, and 2.2 for older adults.

"The correct default should be no added salt in food we purchase, leaving those who still wish to do so free to indulge at their own risk," they conclude.

Feb 04
Stress Too Blamed For Adding Years To Your Face
Wrinkles are not due to genetics alone but also to stressful environmental factors, such as a divorce, abnormal weight loss and use of antidepressants, according to a study published Tuesday.


"A person's heritage may initially dictate how they age - but if you introduce certain factors into your life, you will certainly age faster. Likewise, if you avoid those factors, you can slow down the hands of time," said study author Bahaman Guyuron, an American Society of Plastic Surgeons (ASPS) member.

Researchers examined 186 pairs of identical twins because "they are genetically programmed to age exactly the same," explained Guyuron, professor and chairman of the department of plastic surgery at the University Hospitals Case Medical Center, in Cleveland, Ohio.

The study found that twins who had been divorced looked nearly two years older than their identical siblings who were married, widowed or single. Researchers found that antidepressant use and weight gain were also factors in perceived age difference.

In sets of twins younger than 40, the heavier twin seemed older, while in sets of twins more than 40 years old, the heavier twin seemed younger.

"The presence of stress could be one of the common denominators in those twins who appeared older," said Guyuron.

Continued relaxation of the facial muscles due to antidepressant use could explain sagging, and losing abnormal amounts of weight has harmful effects on health and appearance, the researchers found.

The study was published in the web-based version of "Plastic and Reconstructive Surgery," the ASPS medical journal.

Feb 03
How to cope with a heart attack?
Now that a loved one has had one, it is best not to deal with the past but to look forward and see what can be done. More than the heart attack, which is physical, it is important to keep an open and positive mind. After all, mind invariably triumphs over matter.

Medicines increase the supply of blood to the heart, preventing a further narrowing of blood vessels and regulating heart function. But you must remember to alter your lifestyle too.

Change in dietary habits and regular exercise is what one should be looking at. Avoid:

Ghee, butter and cheese.
Coconut oil, the yolk of the egg, nuts and cream.
Eating liver, brain and kidney, if you are a non-vegetarian.
Fried foods.
Eating a meal to the point of feeling full. Always get up from the table feeling slightly hungry.
You can eat

Plenty of greens and vegetables including onions and garlic.
If you are a non-vegetarian, you can eat lean fish and the white of an egg.
Instead of using ghee, change over to cooking in gingely oil or sunflower oil.
Exercise

A regular walk at a comfortable pace could do wonders. Gradual aerobic exercises like brisk walking, cycling and swimming are mentally relaxing and also give a feeling of well being.
Certain yogasanas, meditation and stress relieving therapies are also very useful.
While climbing stairs, the person must do so very slowly, as the heart has to work for at least 10 times more than normal.
Personality changes

Try and be cheerful and content.
Learn to relax.
Give up smoking. Nicotine is the culprit.
Alcohol is also a risk factor.
The above dos and don’ts are very simple, and if carried out should go a long way in your mission to save your heart.

Feb 03
Good news for women
Researchers at the University of Sydney report they have developed a special program that can be used along with magnetic resonance spectroscopy (MRS), a type of scan, to identify breast cancer that is more likely to spread to the lymph nodes.

They hope the technique might one day provide a diagnosis and prognosis before a woman goes into surgery. Patients with early breast cancer might avoid having numerous armpit lymph nodes removed for testing and women with truly benign lesions may be able to avoid surgery to rule out cancer, the Australian researchers said.

The program is a type of mathematical pattern recognition or statistical classification strategy (SCS) that organizes thousands of pieces of information to gauge whether or not breast tissue is malignant, and if so whether it is likely to spread to the lymph nodes.

Dr. Cynthia Lean, scientific director of the Institute for Magnetic Resonance Research, presented results of her research Friday at the Department of Defense Breast Cancer Research meeting here. In an interview with Reuters Health, lead investigator Lean said the ultimate goal of her team is to develop "a total program of breast cancer screening and diagnosis that is completely noninvasive."

Currently, she and her colleagues have collected cell samples from 400 breast cancer patients who participated in three separate breast cancer trials. The samples were from fine needle biopsies, in which cells are collected with a needle to test for cancer after a suspicious mammogram. Initially they used MRS to look at the specimens, and determine if malignant samples had "a different array on the spectrum" than benign specimens. Spectroscopy uses the spectrum of light to identify the chemical components of a substance, each of which absorbs different wavelengths of light.

"And the specimens did appear very different," Lean explained. The next step involved identifying approximately 4,000 pieces of chemical formation in each sample. "With those 4,000 pieces of information, we were able to develop the statistical classification strategy program." She said that she and her colleagues are developing similar recognition programs for "10 or 12 other cancers, but we have achieved the greatest success with breast cancer."

MRS analysis using the statistical classification strategy identified 94% of the cancerous samples, with 2% false positives. It is also useful in termining which tumors were likely to spread to lymph nodes. Lean said MRS may be most useful as an adjunctive test for women "who have inconclusive mammography and fine needle biopsy. As an additional piece of information, MRS could be used to confirm malignancy without the need for an open biopsy." Moreover, she added, it could be used to confirm that the cancer had spread, or metastasized, to the lymph nodes. While Lean and colleagues are currently using MRS to analyze biopsy samples, they hope to use MRS for diagnosing and determining prognosis in patients.

Dr. Kenneth A. Bertram, colonel in the US Army Medical Corps and director of the Congressionally Directed Medical Research Programs, said that MRS is appealing because it "has the potential to reduce the need for open biopsy."

Asked if it was likely that MRS could someday be used as a completely non-invasive technique for diagnosis, he said "the physics folks tell us this is possible. And although it is likely to be expensive, remember CT (CAT scanning) was very expensive in the beginning."

Feb 03
Heat produces cancer-causing agent in foods
Chemical is found in starchy staples;
Health Canada urges food industry to act

Canadian scientists have discovered a chemical reaction that produces high levels of a potentially cancer-causing substance in some popular starchy foods, including potato chips and French fries.

And while Health Canada has informed the food industry about the finding and urged it to immediately find ways of preventing the chemical's formation, the government agency has not yet informed the public.

Health Canada has, however, posted a copy of its letter to the food industry on its Web site (http://www.hc-sc.gc.ca), along with information about acrylamide, the chemical that forms when certain starchy foods are cooked.

The government is not urging Canadians to give up such fried and baked foods as potato chips, French fries, cookies, processed cereals and breads in which the chemical has been found.

"Health Canada is not advising consumers to make any dietary changes at this time," the agency states on its Web site. "Rather, Health Canada continues to recommend that consumers follow a healthy, balanced diet, drawing from a variety of foods and consuming them in moderation."

Canadian scientists discovered that, at high temperatures, acrylamide is created when asparagine a naturally occurring amino acid found in starchy foods such as potatoes combines with the natural sugar glucose.

Further details about this chemical process will be released later this week.

Acrylamide was found only in starchy fried or baked products that had been cooked at temperatures higher than 1200C. It was not found in boiled foods, which are cooked at lower temperatures.

The Canadian government has been studying the process since Swedish scientists at Stockholm University announced in April that they had found high levels of acrylamide in some starchy foods.

According to the Swedish government's National Food Administration, acrylamide could be present in foods that have not yet been tested. In the U.S., for example, the chemical was found in roasted asparagus and banana chips.

On its Web site, Health Canada describes acrylamide as a chemical that is produced for use in the manufacture of some plastics. It is also used by some municipalities to remove suspended particles from drinking water.

However, according to Health Canada, the chemical has been shown to cause cancer in laboratory animals, though more studies are necessary to understand its potential effect on humans.

The U.S. Food and Drug Administration has made lowering the levels of acrylamide and studying the risks associated with its presence in foods a top priority. The agency plans to discuss the issue today with food manufacturers and consumer groups.

Researchers in the United States, Norway, Britain and Switzerland have also found high levels of the chemical in their foods.

Feb 03
Jet lag shrinks woman's brains more
And I'm leaving on a jet plane...



You've just staggered off a 12-hour flight. The clock says it's dawn, but your body says it's bedtime. You can't remember what day it is nor do you really care.


The fuzzy, queasy sensation of jet lag has sometimes been likened to having your brain gently squeezed - and now, a researcher in Britain says that feeling has scientific backing.

Kwangwook Cho, of the University of Bristol Medical School, found that chronic jet lag appears to shrink the frontal part of the brain, inflicting temporary loss of memory and cognitive skills. He studied 20 women flight attendants aged between 22 and 28 who had worked for at least five years for an airline and routinely flew across at least seven time zones. Women were chosen for the test because they generally suffered worse jet lag than men.

Cho carried out a scan of each woman, using magnetic resonance imaging, which provides a 3-D image of the brain, and assessed their performance in tests. Among the women had a short turnaround in flights, an area of the brain called the right temporal lobe was "significantly smaller" than women who had the 14-day turnaround.

Feb 03
Breast cancer-heredity link undermined
Contrary to some previous reports, breast cancer patients with a genetic predisposition to the disease have survival rates similar to those of other breast cancer patients, Finnish researchers have found.

Dr Hannleena Eerola, of Helsinki University Central Hospital, said that several studies have looked at survival among women with familial breast cancer, but the results have been inconsistent.

She and her colleagues investigated the survival rates of 359 familial breast cancer patients. Of these, 32 were from families positive for the BRCA1 susceptibility gene, 43 were from BRCA2-positive families and the remaining 284 were from families negative for both.

Mutations in the BRCA1 and BRCA2 genes account for most cases of inherited breast and ovarian cancer, they note in the August 1st issue of the International Journal of Cancer.

When the researchers compared the survival rates of their study patients with that of other breast cancer patients (almost 60,000) diagnosed in Finland over more than 40 years, they found that women with a genetic susceptibility to the disease had survival rates comparable to other patients.

The overall 5-year survival rate was 67% for breast cancer patients from BRCA1-positive families, 77% for those from BRCA2-positive families, 86% for those with familial disease not related to these two mutations, and 78% for women whose cancer was not related to heredity, Eerola and her colleagues report.

When they factored in the women's age, stage of the disease and year of diagnosis, there were no significant differences in survival between women with familial breast cancer and the general breast cancer population.

Still, Erola noted that even the small survival differences they found - if confirmed in larger studies- could affect the care of women with familial breast cancer. However, she concluded that "based on this and previous studies it is probable that large differences do not exist".

Feb 03
Overweight girls tend to hit puberty earlier
Early maturation related to overweight.

Reuters citing researchers stated that young girls who are overweight tend to enter puberty at an earlier age, adding to the debate about whether the trend towards earlier maturation is a cause for concern.

''A lot of people are concerned that early maturing girls might feel isolated and different from their peers,'' said Paul Kaplowitz, a paediatrician at the Virginia Commonwealth University School of Medicine who authored the study of 17,000 girls.

Kaplowitz said in extreme cases, they can end up rather short because if they start growing early, they also have chances of serious psychological or physical problems,'' Kaplowitz said in a statement. ''These girls can simply be monitored,'' he added.

Writing in the journal 'Paediatrics, he found an association between heavier-weight girls and early puberty among white girls but the link was less apparent among black girls.

A well-publicised study published four years ago in paediatrics showed American children were hitting puberty earlier than they did in previous decades, and that black girls reached puberty about a year earlier on average than whites.


More black girls than whites are overweight.

Other studies have suggested that the bodies of heavier-weight girls may reach puberty earlier because they have more of a type of proteins called leptins, which are thought to trigger hormone releases that cause pubic hair to grow and breasts to form.



''The latest ... Growth data, which comes from a large National sample, shows that both boys and girls are getting their growth spurts earlier now than they were 30 or 40 years ago,'' she said. ''If environmental conditions are influencing girls to develop earlier than they used to, we ought to try to find out what they are because they are not likely to be healthy,'' she said.

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