coffee

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Pinpointing specific genetic variants — areas of the genetic code that vary from person to person — wasn’t always possible, so it was hard to tell whether caffeine was the most important factor in coffee drinking behaviors. Now that scientists can decipher the genetic components of behaviors, we’re that much closer to figuring out why coffee affects us the way it does.

Here’s why you’re bouncing off the walls: the genetics of coffee consumption (via thisistheverge)