Coffee and bowel movement effects

Green tea, soda, coffee, and energy drinks, oh my! How much do we really know about the caffeine we consume, and what it is doing to our bodies? Raj and Noah are here to investigate, with help from Dr. Marilyn Cornelis, associate professor at Northwestern, an expert on the genetics of coffee consumption and caffeine metabolism. Together, they take a look at what we do and don’t know about caffeine’s effects—both good and bad.

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