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Healthy Lifestyle Turns Off Genes that Cause Cancer

from New Scientist

It's no secret that a healthy lifestyle can slow the progression of cancer, but how this happens has been a mystery. Now new evidence suggests an answer: dieting and exercise may turn crucial genes on and off.

In a pilot study involving 30 men with early-stage prostate cancer, Dean Ornish and colleagues at the University of California, San Francisco, US, tested the effects of a dramatic lifestyle change on gene expression in the prostate.

Biopsies taken before and after 3 months of healthy eating, moderate exercise, stress management and psychotherapy showed a significant change in the expression of hundreds of genes.

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PODCASTS: Expanding With the Cosmos

Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.

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