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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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News on Health & Science

The Pill that Reduces Body Fat by Half in a Week

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Tests on mice have shown that the drug could decrease body weight by a quarter and their fat content by 42 per cent after seven days.
After a month, the weight of the mice had been reduced by 28 per cent and their fat mass by 63 per cent.
But experts warned that it could take a decade for the potential wonder drug to be developed for use by patients.
The researchers, whose findings are published online in Nature Chemical Biology, say further research is needed before the drug is tested on humans.
But they say the results point to a new approach for the treatment of obesity and adult-onset diabetes.
The drug is an artificial hormone that regulates glucose metabolism.
Previous studies have found this substance can suppress appetite or lead to weight loss by increasing the body’s calorie usage.
Dr Richard DiMarchi and colleagues at Indiana University in the U.S. created the synthetic hormone and carried out the trials on mice.
He said: ‘Obesity and its associated consequences, including adult-onset diabetes, remain a primary health and economic threat for modern societies.’
At the moment surgical interventions such as gastric bypass remain the only therapeutic options with the potential for a cure.
Dr DiMarchi said acute glucagon administration reduces food intake in animals and in humans, and may also promote weight loss.
He added: ‘Pharmacological treatment of obesity using single agents has limited efficacy or presents risk for serious adverse effects.
‘No single agent has proven to be capable of reducing body weight more than 5 to 10 per cent in the obese population.
‘Combination therapies using multiple drugs simultaneously may represent the preferred pharmaceutical approach to treat obesity, and there is ample precedent for combination therapy in treatment of chronic diseases.

‘Here we present results that prove the principle that single molecules can be designed that are capable of simultaneously activating more than one mechanism to safely normalise body weight.’

Last night, he said it would be ten years before the drug is available and tests needed to be completed on humans.
Cambridge University professor of clinical biochemistry Stephen O’Rahilly said: ‘It is important that these are demonstrated to be effective and safe in animal models before going forward with trials in humans.’
He added: ‘Many promising drugs fall down when tried in humans either because they don’t work sufficiently well or because of side effects.
‘It is far too early to tell whether this molecule will be one of the exceptions and become a safe and effective treatment for obesity in humans.’
But he concluded: ‘I hold out considerable hope for the discovery of safe and effective anti-obesity therapies.’
Professor O’Rahilly said that patients being treated with the drug could take one pill a day, or an injection.

Source: Mail Online. July 14th. 2009

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Longer Ring Finger Predicts Financial Success

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The length of a man’s ring finger may predict his success as a financial trader. Researchers at the University of Cambridge in England  report that men with longer ring fingers, compared to their index fingers, tended to be more successful in the frantic high-frequency trading in the London financial district.
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Indeed, the impact of biology on success was about equal to years of experience at the job, the team led by physiologist John Coates reports in Monday’s edition of Proceedings of the National Academy of Sciences.
The same ring-to-index finger ratio has previously been associated with success in competitive sports such as soccer and basketball, the researchers noted.

The length ratio between those two fingers is determined during the development of the fetus and the relatively longer ring finger indicates greater exposure to the male hormone androgen, the researchers noted.
Previous studies have found that such exposure can lead to increased confidence, risk preferences, search persistence, heightened vigilance and quickened reaction times.

In the new study, the researchers measured the right hands of 44 male stock traders who were engaged in a type of trade that involved rapid decision-making and quick physical reactions.

Over 20 months those with longer ring fingers compared to their index fingers made 11 times more money than those with the shortest ring fingers. Over the same time the most experienced traders made about 9 times more than the least experienced ones.

Looking only at experienced traders, the long-ring-finger folks earned 5 times more than those with short ring fingers.

While the finger ratio, showing fetal exposure to male hormones, appears to signal likely success in high-actively trading that calls for risk-taking and quick reactions, it may not indicate people who would do well at other sorts of financial activities, the researchers said. Some traders require additional skills on dealing with clients and sales workers.

Sources: The Times Of india

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