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Why False Positive Results Are So Common In Medicine

Have you ever been surprised and confused by what seem to be conflicting results from scientific research? Have you ever secretly wondered if the medical profession is comprised of neurotic individuals who change their mind more frequently than you change your clothes? Well, I can understand why you’d feel that way because the public is constantly barraged with mixed health messages. But why is this happening?

The answer is complex, and I’d like to take a closer look at a few of the reasons in a series of blog posts. First, the human body is so incredibly complicated that we are constantly learning new things about it – how medicines, foods, and the environment impact it from the chemical to cellular to organ system level. There will always be new information, some of which may contradict previous thinking, and some that furthers it or ads a new facet to what we have already learned. Because human behavior is also so intricate, it’s far more difficult to prove a clear cause and effect relationship with certain treatments and interventions, due to the power of the human mind to perceive benefit when there is none (placebo effect).

Second, the media, by its very nature, seeks to present data with less ambiguity than is warranted. R. Barker Bausell, PhD, explains this tendency:

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Posted in: Science and the Media

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