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Caffeine Tolerance Might Be Genetic

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Scientists have identified a gene that metabolizes caffeine at a particular rate within each person, which could explain why different people drink different amounts of caffeine to wake up. What do you think?


“I’ve always known I come from a three-venti-caramel-macchiatos-a-day bloodline.”

Justine Weiner • Systems Analyst

“It’s incredibly useful to have another thing to blame on my parents.”

Devin Showalter • Aloe Extractor

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“Then how come I drink a whole pot of coffee every day, but my 5-year-old can barely finish his morning cup?”

Art Hess • Unemployed