For Coffee Drinkers, the Buzz May Be in Your Genes – New York Times (blog)

For Coffee Drinkers, the Buzz May Be in Your Genes
New York Times (blog)
I'm never fully awake until I have had my morning cup of espresso. It makes me productive, energized and what I can only describe as mildly euphoric. But as one of the millions of caffeine-loving Americans who can measure out my life with coffee spoons …