Sleep
CYP1A2 Slow Caffeine Metabolism
CYP1A2 slow caffeine metabolism extends how long caffeine stays active—often requiring earlier cutoffs and lower daily totals than population averages suggest.
CYP1A2 slow caffeine metabolism means the liver clears caffeine more slowly—half-life often stretches toward eight to twelve hours—so the same afternoon latte hits bedtime harder than for fast metabolizers. Genetics, smoking cessation, some medications, and pregnancy can slow clearance further.
Slow types usually need earlier cutoffs and lower daily totals, not more willpower.
Common questions
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Do you need a genetic test to act like a slow metabolizer?
No—a two-week earlier-cutoff experiment with sleep latency tracking is enough for most people. Testing can confirm suspicion when generic cutoffs fail repeatedly.
Related terms
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