You jolt awake at 2:30 a.m., a monologue of catastrophe passing through your head like the news crawl on CNN: What was inside those enchiladas I ate for dinner? Is the ladies' room at work really clean? Is my microwave going to kill me?

Fear not (okay, have a little fear). We queried scientists, physicians, researchers and others to find out the answers to a few of the most popularly worry-making health questions out there.

A Hypochondriac's Guide to Life's Daily Health Perils

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