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'Knowing It in Your Gut': Cross-Talk Between Human Gut Bacteria and Brain ScienceDaily (Mar. 23, 2011) — A lot of chatter goes on inside each one of us and not all of it happens between our ears. Researchers at McMaster University discovered that the "cross-talk" between bacteria in our gut and our brain plays an important role in the development of psychiatric illness, intestinal diseases and probably other health problems as well including obesity.
Why We Love Beautiful Things - NYTimes.com