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Study: If You’re a Coffee Lover, it Might Be in Your Genes

Scientists have identified a gene that may explain why some people have undeniable coffee cravings and hit the coffee pot multitudinous times a day. [1]
For the study, researchers looked at a population of people in villages in Italy, and conducted a genome-wide association study in which they examined markers in DNA and identified a gene called PDSS2 that could play a role in caffeine metabolism.