The internet has produced plenty of suspiciously convenient health claims, but few are as appealing as this one: every time you fart, you supposedly burn 67 calories. Repeat the process often enough, the story goes, and your digestive syste...
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There are few moments quite like looking into the toilet and discovering that something which is normally brown has turned unmistakably green. It is the kind of question many people would ra...
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A mosquito bite is usually an itchy annoyance that disappears within a few days. During summer and early autumn in the United States, however, one particular mosquito-borne infection repeate...
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There is ordinary tiredness—the heavy-eyed feeling after a late night, a long flight or an exhausting week—and then there is the more puzzling question: Why am I tired all the time? You slee...
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“Why does my stomach hurt?” sounds like a simple question, but medically it is one of the broadest questions a person can ask. What we casually call the stomach is often the entire abdomen,...
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Step out of a dark cinema into brilliant afternoon sunlight and, for some people, the reaction is immediate. The eyes narrow, the nose begins to tingle and within seconds comes an involuntar...
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An old tree can carry the shape of an injury long after the branch that caused it has disappeared. A swollen collar may surround the site of a lost limb. Growth rings can bend around the old...
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