Not every year is defined by a big-name diet or fitness trend – think Atkins or the Thighmaster. That's a good thing. Such popular quick fixes so often turn out to be just fads. The science that really defines how we think about health and fitness requires more time and consideration. Major studies confirm our hunches (that nuts are good for us), shed light on hidden health hazards (oral sex and brown rice), and give us better ways to get fit and look good, such as high-intensity interval training regimens, which are on the rise now. Here are the nine best health and fitness trends we spotted this year – the ones we think will last.
Prescriptions for testosterone jumped threefold in a decade, raising the question: Are men being overtreated? A study in the 'Journal of the American Medical Association,' appears to answer that with an unequivocal yes, noting that marketing – promising bigger muscles and a youthful libido – is largely responsible for the fact that 25 percent of guys are treated without getting tested. A recent study also found that the therapy can raise the chance of heart attack, stroke, or death by 30 percent. Unless someone shows dangerously low numbers and symptoms, supplements may not make sense at all. "Some men may live at what would be considered a low level, whereas others need higher levels," says Dr. Gregory Bernstein, of Virginia Hospital Center. "But we don't know what truly is normal."
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