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Evidence-based medicine

In his new job overseeing health coverage for 1.2 million workers and their families, Atul Gawande says he hopes to find specific ways to make health care more efficient and the solutions exportable. Dan Bayer /The Aspen Institute via Flickr hide caption

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Dan Bayer /The Aspen Institute via Flickr

The notion that every dog or cat should be neutered at 6 months isn't based on evidence, says veterinarian Brennen McKenzie, author of The SkeptVet blog. It depends on the breed and other factors. Talk to your vet, he advises, about pros, cons and timing. katoosha/iStockphoto/Getty Images hide caption

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Are The Vaccine Court's Requirements Too Strict?

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Science-based guidelines say there's no benefit to getting an EKG of heart activity before routine cataract surgery — even if the patient is old. But most doctors order such tests anyway. Bull's Eye/ImageZoo/Corbis hide caption

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Bull's Eye/ImageZoo/Corbis

Why Many Doctors Don't Follow 'Best Practices'

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A meeting of Alcoholics Anonymous in the 1950s was based on much the same 12-step program used today. Bettmann/Corbis hide caption

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Bettmann/Corbis

Critic Faults Alcoholics Anonymous For Lack Of Evidence

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