Article Correctness Is Author's Responsibility: The complex biology behind your love (or hatred) of coffee

(DOE/Lawrence Berkeley National Laboratory) Why do some people feel like they need three cups of coffee just to get through the day when others are happy with only one? Why do some people abstain entirely? New research suggests that our intake of coffee -- the most popular beverage in America, above bottled water, sodas, tea, and beer -- is affected by a positive feedback loop between genetics and the environment.