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Healthy Tips

Exercise Your Brain

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We all know about the importance of proper nutrition and exercise to keep our muscles in good shape. But did you also know that giving the brain a workout is equally important?

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Researchers from the Mayo Clinic and the University of Southern California have determined that computer-based mental training programs appear to improve cognitive performance in older people by as much as 10 years. Another study from Harvard found that taking beta-carotene long-term can improve cognitive function.

So what can you do to keep your brain as fit as the rest of you? Here are a few tips:

* Move your body. A recent study from Columbia University in New York City found that people who exercised regularly for three months increased the blood flow to the hippocampus part of the brain, which is responsible for memory. This also can lead to the production of new brain cells. Sandra Aamodt, editor-in-chief of Nature Neuroscience, a leading scientific journal on brain research, explains that increased blood flow to the brain can offset mini-strokes, which can cause cognitive decline.

* Eat your vegetables and fruits. Your mother was right all along! The Alzheimer’s Association recommends a diet high in dark-colored vegetables (e.g., kale, spinach, beets and eggplant); colorful fruits (e.g., berries, raisins, prunes, oranges and red grapes) and fish such as salmon or trout high in heart-healthy omega-3 fatty acids to keep those neurons firing. James Joseph, director of the neuroscience lab at the USDA Human Nutrition Research Center on Aging at Tufts University, says, “We have found that the berry fruits improve neuronal communication.”

* Challenge your brain. Games such as crossword puzzles, word jumbles or even sudoku (a numbers puzzle originating in Japan) keep those mental wheels turning. In tests of experienced crossword puzzlers of all ages, those in their 60s and 70s did the best, according to a recent article in U.S. News & World Report.

* Be social. Get involved with your community or participate in your favorite hobby with others. Researchers at Harvard found that those with at least five social ties were less likely to suffer cognitive decline than those with no social ties. Researchers at George Washington University found that elderly people who joined a choir stepped up their other activities during a 12-month period, while those who were not involved with the choir dropped out of other social activities.

DOING PRANAYAMA & MEDITATION IS A VERY GOOD EXERCISE OF BRAIN

Sources:http://www.toyourhealth.com/mpacms/tyh/article.php?id=1035

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News on Health & Science

How Cheetahs Dying Can Massively Improve Your Health

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Cheetahs are being threatened by a deadly disease called amyloid A amyloidosis, or AA amyloidosis. The illness kills up to 70 percent of the cats in captivity, making breeding efforts difficult.

AA amyloidosis resembles mad cow disease. A misfolded version of a protein converts normal proteins into abnormal ones, until large deposits of damaging protein build up in tissues — the spleen and liver in the case of AA amyloidosis, the brain and central nervous system for mad cow disease.

AA amyloidosis is not caused by a bacteria or virus, but it can likely spread from animal to animal like an infectious disease. Biologists have had difficulty, however, figuring out how the disease moves from cat to cat.

Sarah Durant, a conservation biologist at the Zoological Society of London and the U.S.–based Wildlife Conservation Society, says limiting the spread of AA amyloidosis among captive animals is a good strategy. Although the disease is unlikely to affect free-roaming cheetahs, she says that conquering it in captivity could raise awareness of the plight of wild cheetahs.


Sources:
Science NOW May 12, 2008

Categories
News on Health & Science

Malaria Parasites ‘Family Plan’

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People are infected with malaria from parasites inside mosquitoes

Edinburgh university scientists said their discovery could give clues in the fight to stop the disease spreading.

Determining when the parasites are likely to favour producing one sex over the other could assist the development of anti-malarial drugs and vaccines.

Parasites have to produce offspring inside a mosquito to transmit malaria.

Parasites, which are sucked up into a mosquito from infected blood while it is having a meal, have 20 minutes to reproduce.

The female single-celled organism turns into an egg and the male splits up into eight sperm.

However, when conditions are unfavourable inside the mosquito’s gut, parasites adjust their production of males and females to maximise their reproduction.

The parasite offspring then move to the mouth of the mosquito and when it next takes a meal they are injected into the next human via its saliva.

The Edinburgh scientists said it showed how malaria parasites were more sophisticated than previously thought.

They can respond to changes in their social situation and environment, something that is traditionally associated with more complex animals such as insects, birds and mammals.

Harsher conditions

Usually, malaria parasites will tend to produce more daughters than sons, because all the females are expected to find a mate.

However, in harsher conditions, for example when under attack from a person’s immune system, or when competition to breed is high among the parasites, it is beneficial to have more sons, to increase the overall chance of their genes being passed on.

The study, published in the journal Nature, was funded by the Natural Environment Research Council, Biotechnology and Biological Sciences Research Council and the Wellcome Trust.

Dr Sarah Reece, of the University of Edinburgh’s School of Biological Sciences, who led the study, said: “We have long suspected that malaria parasites adjust their production of males and females to ensure their spread, and we have now shown that this is the case.

“We hope that by understanding the family planning strategy of these parasites, ways can be found to stop the spread of malaria.”

“We hope that by understanding the family planning strategy of these parasites, ways can be found to stop the spread of malaria” Dr Sarah Reece, Edinburgh University

You may click to see:->
Blood findings bring malaria hope
Nets boost Africa’s malaria fight
WHO warns of global epidemic risk

Sources: BBC NEWS:28Th. May,’08

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