Medical information and weasels

A colleague recently sent me the following headline from Yahoo! Health: http://health.yahoo.net/news/s/hsn/your-gut-bacteria-may-predict-your-obesity-risk (do me a favor and wait on clicking that link until you've read the rest of this post...) Now, he was just sharing information - he's interested in this field - but I'm teaching evidence-based medicine to the medical students this month, and …

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