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I'm often asked for medical advice by friends, family members, even new acquaintances: What about this diet? What should I do about this symptom? What about this medication?
People are usually disappointed when I don't share their enthusiasm about the latest health fads. Members of my family, in particular, are often underwhelmed by my medical advice.
I'll be the first to admit that I don't always do a great job of conveying why I'm skeptical about the newest medical technology, reports of the latest health news and fashions and even people's symptoms. Mostly it's because in my experience so much about health just isn't that simple.
Most symptoms, after all, aren't explainable, at least to the level of detail we all seem to want. "What's causing my symptoms?" friends, family and patients ask me. Is it a virus? Bacteria? Arterial blockage?
In spite of all the science and technology in medicine, what we doctors do is more about making educated guesses. Especially in primary care, it's often a matter of playing the probabilities than providing precise diagnostic information.
But prevention is different. We know a lot about it, based on huge bodies of epidemiological research. Most of prevention is fairly straightforward. You've heard the advice again and again. In fact, the repetition may make it easy to tune out.
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