Moderate amounts of exercise, such as walking 12 miles per week, may help prevent weight gain, and can promote weight loss in non-dieting individuals, according to an article in the January 12 issue of The Archives of Internal Medicine, one of the JAMA/Archives journals.
Fifty-five percent of Americans are overweight or obese, according to the article. From 1991 to 1998, the prevalence of obesity increased by almost 50 percent. Obesity is associated with a higher risk for several health problems, including heart disease and diabetes mellitus. It is widely believed that diet, combined with physical activity plays an important role in weight management, but the amount of activity needed to prevent weight gain is unknown.
Cris A. Slentz, Ph.D., from Duke University Medical Center, Durham, N.C., and colleagues investigated the effects of different amounts and intensities of exercise on weight.
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For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
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For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
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Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
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Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
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