Tag: CYP1A2
Caffeine Does Not Create Energy—It Masks Fatigue, Study Shows
Caffeine does not produce energy but instead blocks the brain's fatigue signals, allowing tiredness to accumulate invisibly. Genetic variation in…
Why Coffee Affects Everyone Differently: The Science of Caffeine Metabolism
Caffeine metabolism is governed by liver enzymes, genetics, and lifestyle factors, explaining why coffee affects different people dramatically differently. The…
Why Coffee’s Heart Risk Depends on Your Genes, Not Headlines
Whether coffee raises your heart disease risk depends almost entirely on a single genetic variant in the CYP1A2 enzyme. About…
Why the ‘2pm coffee cutoff’ is a myth: genetics and lifestyle create a 15-fold range in caffeine metabolism
A new systematic review reveals that caffeine half-life varies 15- to 40-fold across healthy adults, making the popular '2pm cutoff'…
Why the ‘2pm Coffee Rule’ Fails: Metabolism Varies 5-Fold Between Individuals
New research reveals caffeine elimination varies 5-fold between individuals, making the popular '2pm coffee rule' ineffective for many. Genetic and…
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