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 Walking not only boosts physical health but now world-first Australian research shows it can help your brain stay younger longer.
In a University of Western Australia study, conducted over 18 months, 170 participants aged over 50 who felt they had memory problems were divided into two groups.
For six months, one group aimed to walk for 50 minutes three times a week or participate in other moderate exercise.
The other group continued with their usual activities.
Results revealed the exercise group completed an average of 20 minutes more daily physical activity than the control group.
The exercise group performed better on cognitive tasks and had superior delayed recall than the other group. Life & Style
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 The spread of the Roman Empire through Europe could help explain why those living in its former colonies are more vulnerable to HIV.
The claim, by French researchers, is that people once ruled by Rome are less likely to have a gene variant which protects against HIV.
This includes England, France, Greece and Spain, New Scientist reports.
Others argue the difference is linked to a far larger event, such as the spread of bubonic plague or smallpox. BBC News
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Parent advocate disagrees, noting that only one potential mechanism was studied.
Hoping to dispel long-running concerns that autism is linked to the measles-mumps-rubella vaccine (MMR), researchers now say a new study shows the childhood vaccine does not raise that risk.
"We are certain that there's no link between autism and the MMR," Dr. W. Ian Lipkin, director of the Mailman School of Public Health Center for Infection and Immunity at Columbia University College of Physicians and Surgeons, said at a Wednesday teleconference. USA Today
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 In an effort to better understand how chronic stress affects the human body, researchers at the Yerkes National Primate Research Center and the Department of Psychiatry and Behavioral Sciences, Emory University, have created an animal model that shows how chronic stress affects behavior, physiology and reproduction.
Developing the animal model better positions the researchers to understand the neurohormonal causes of such stress and the body reaction in order to develop more effective treatment options for humans. The study is available in the current online edition of Molecular Psychiatry. Science Daily
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A radioactive tracer that “lights up” cancer hiding inside dense breasts showed promise in its first big test against mammograms, revealing more tumors and giving fewer false alarms, doctors reported Wednesday.
The experimental method, molecular breast imaging, or M.B.I., would not replace mammograms for women at average risk for cancer. But it might become an additional tool for higher-risk women with a lot of dense tissue that makes tumors hard to spot on mammograms, and at a lower cost than magnetic resonance imaging, or M.R.I. About one-fourth of women 40 and older have dense breasts. The New York Time
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 If given a regimen of ibuprofen followed by concurrent administration of ibuprofen and paracetamol, fever in young children may be controlled, according to a study released on September 3, 2008 in BMJ.
A common symptom of childhood illness, fever simply indicates a higher body temperature than normal. Most pre-school children are affected by fever in any given year. It is usually treated in the home and in the health-care office using either paracetamol or ibuprofen, but studies of the medications in combination must be further explored. The UK's National Institute for Health and Clinical Excellence indicated last year that, due to the lack of evidence regarding this use, these medications should not be combined or used in alternation. Medical News Today
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A new study suggests that children born from older fathers are at increased risk of developing bipolar disorder.
Earlier research has shown a link between older paternal age and risk for autism and schizophrenia. The new findings appear in the September issue of Archives of Psychiatry.
Overall, children born to fathers in their mid-50s and older were found to have a 37% higher risk for bipolar disorder than children born to dads in their early 20s.
The risk of developing the mood disorder before the age of 20 was roughly 2.5-times greater for children born to men age 50 and older than for children born to men between the ages of 20 and 24.
While characterizing this increase in risk as "quite strong," researcher Emma M. Frans, MmedSc, of Stockholm's Karolinska Institute tells WebMD that the relative risk at the individual level is still very small.
"There are very few men having children at this age, and most of the children born to these men will be healthy," she says. WebMD
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 Bad, quirky and obsessive behaviour is not new. Now there's a drug for everything - but is that the answer? Roger Dobson reports.
Spending too much time on the internet? Worried about a low sex drive, shyness or lack of social skills? Or do you lose your temper too easily, blush too readily or spend too much time and money shopping?
There was a time when such behaviours might have been regarded as individual differences, or put down to lack of self-control and restraint. But not any more. Increasing numbers of behavioural conditions are being treated with drug therapy. Bereavement issues, blushing, low sex drive, high sex drive, sex addiction, lack of orgasm, gambling, fear of public speaking, stealing, domestic violence and phobias are all being targeted with drugs that are either in clinical trials or already available. Life & Style
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 Ibuprofen is better at alleviating childhood fever than paracetamol and should be the drug of first choice, say UK researchers.
The Bristol-based trial involving 156 children aged between six months and six years showed ibuprofen reduced temperature faster than paracetamol.
The British Medical Journal work also says alternating the two drugs could help, which some GPs already recommend.
But experts advised against this, in line with official guidance.
The concern is the relative ease with which children could receive an overdose. BBC News
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Taller men are at greater risk for prostate cancer and more likely to have cancer that progresses quickly, a new British study suggests.
The researchers doubt that height itself is the reason for the increased risk, but it may serve as a marker for something biological associated with developing cancer. USA Today
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 A new study at Oregon State University has finally resolved a controversy that cellular biologists have been arguing over for nearly 50 years, with findings that may aid research on everything from birth defects and genetic diseases to the most classic "cell division" issue of them all – cancer.
The exact mechanism that controls how chromosomes in a cell replicate and then divide into two cells, a process fundamental to life, has never been completely pinned down, researchers say. You can find the basics in any high school biology textbook, but the devil is in the details. Science Daily
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A drug being developed by Regeneron Pharmaceuticals sharply reduced the number of gout flare-ups in a clinical trial, the company is expected to announce Wednesday.
Experts said the drug, called Arcalyst, potentially could be a significant advance in treatment of gout, an intensely painful joint inflammation that, according to the American College of Rheumatology, afflicts up to three million Americans.
“You can really dramatically blunt the risk of having flares,” said Dr. H. Ralph Schumacher Jr., a professor of medicine at the University of Pennsylvania who is a consultant to Regeneron. The New York Time
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