Genetics Explains Why You Drink So Much Coffee

If your favorite order at Starbucks is the “red-eye,” you can thank genetics for your ability to slog down all that caffeine without the shakes.

In a new study, scientists identified eight genetic variants that could partly explain why some people drink coffee by the pot, while others avoid the stimulating beverage altogether. By outlining the genetic foundation for coffee consumption, scientists believe they can find firmer evidence to support the positive — and negative — health effects o

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