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Which Comes First, Needing Glasses or Education?
Myopia or near-sightedness, and higher levels of education are associated. But which came first? And which is the cause? Can genetic information help us to convert correlation to causation while answering this chicken-or-egg question?
Coffee, Mendel and Mortality
Coffee is alternately championed and derided for its health effects. A new study introduces the genetics of caffeine metabolism into the conversation.