Tag: Science Daily

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Healthy Tips

Regular Physical Activity Reduces the Risk of Early Death

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A new study by researchers from the London School of Hygiene and Tropical Medicine (LSHTM), Cambridge University and the Karolinska Institute in Sweden has found that even light or moderate intensity physical activity, such as walking or cycling, can substantially reduced the risk of early death.

The study combined the results from the largest studies around the world on the health impact of light and moderately intense physical activity.

Although more activity is better, the benefits of even a small amount of physical activity were very large in the least physically active group of people.

Science Daily reports:
“The good news from this study is that you don’t have to be an exercise freak to benefit from physical activity.
Just achieving the recommended levels of physical activity (equivalent to 30 minutes daily of moderate intensity activity on 5 days a week) reduces the risk of death by 19 percent … while 7 hours per week of moderate activity (compared with no activity) reduces the risk of death by 24 percent”.

Sources:
Science Daily July 25, 2010
International Journal of Epidemiology July 14, 2010 [Epub ahead of print]

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Healthy Tips

Spice Up Your Health

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Your favorite marinades may provide a beneficial source of natural antioxidants, according to a new study by researchers at The University of Western Ontario.
………...CLICK  &  SEE
After analyzing seven popular brands of marinade that contained herbs and spices as their primary ingredients, they found “very good quantities” of antioxidants remained, even after cooking and marinating.

Although marinating meat reduced antioxidants levels by 45-70 percent, there was still a benefit over cooking meat plain, with no marinade.

Consumers can help boost their intake of antioxidants by choosing sauces with the highest levels of antioxidants to begin with, according to researchers.

“Foods rich in antioxidants play an essential role in preventing cardiovascular diseases, cancers, neurodegenerative diseases like Alzheimer’s and Parkinson’s, inflammation and problems associated with cutaneous aging,” Science Daily reported.

Resources:
Science Daily March 24, 2010
Journal of Food Composition and Analysis May 2010, Volume 23, Issue 3, Pages 244-252

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Featured

Our Body Clock Regulates Our Metabolism

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Scientists have discovered that your circadian rhythms regulate the energy levels in your cells. In addition, the proteins involved with circadian rhythms and metabolism are intrinsically linked and dependent upon each other. This finding has far-reaching implications, which could include new ways to treat cancer, diabetes, obesity and a host of related diseases.

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24-hour circadian rhythms govern fundamental physiological functions in almost all organisms. These circadian clocks are the essential time-tracking systems in your body. Disruption of these rhythms can profoundly influence human health.

In a new study, researchers showed that an enzyme protein which is an essential molecular gear of the circadian machinery interacts with a protein that senses cell energy levels and modulates aging and metabolism.

This suggests that proper sleep and diet may help maintain or rebuild the balance between your circadian clock and your metabolism, and could also help explain why lack of rest or disruption of normal sleep patterns can increase hunger, leading to obesity-related illnesses and accelerated aging.

Sources: Science Daily March 19, 2009

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News on Health & Science

Early Childhood Stress Can Have a Lingering Effect on Your Health

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Stressful experiences in early childhood can have long-lasting impacts on children‘s health that can persist well beyond the resolution of the situation.
……..CLICK & SEE
A study revealed impaired immune function in adolescents who experienced either physical abuse or time in an orphanage as youngsters. Even though their environments had changed, physiologically they were still responding to stress. How the immune system develops is very much influenced by early environment.

The researchers looked for high levels of antibodies against the common and usually latent herpes simplex virus type 1 (HSV-1). While roughly two-thirds of Americans carry this virus, which causes cold sores and fever blisters, people with healthy immune systems are able to keep the virus in check and rarely if ever have symptoms. However, people with weakened immune systems can have trouble suppressing HSV-1 and produce antibodies against the activated virus.

Adolescents who had experienced physical abuse or stressful home environments as children had higher levels of HSV-1 antibodies, showing their immune systems were compromised.

Resources:

Science Daily January 28, 2009

Proceedings of the National Academy of Sciences February 2, 2009

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Featured

Chemists Shed Light On Health Benefits Of Garlic

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It has long been believed that the organic compound allicin, which gives garlic its characteristic aroma and flavor, acts as the world’s most powerful antioxidant. But until now it hasn’t been clear how allicin works, or how it compares to more common antioxidants such as vitamin E and coenzyme Q10.

.Garlic. Chemists have discovered the reason why garlic is so good for us. (Credit: iStockphoto/Jorge Farres Sanchez)

.A research team investigated whether allicin could be as effective as claimed. Through experiments with synthetically produced allicin, they found that sulfenic acid produced when the compound decomposes rapidly reacts with dangerous free radicals.

Researchers said that the reaction between the sulfenic acid and radicals is as fast as it can get, limited only by the time it takes for the two molecules to come into contact. No other compound has been observed to react as an antioxidant so quickly.

Sources:
Science Daily January 31, 2009

Angewandte Chemie International Edition December 22, 2008, Volume 48 Issue 1, Pages 157-160

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