Expert Answer
When should you drink coffee?
Quick Answer
Delay 90-120 minutes after waking (Huberman). Cut off by 11 AM (Attia) or 8-12 hours before bed. Patrick: morning-only for longevity. Johnson avoids caffeine entirely.
Moderate Consensus
on Caffeine overall
What Researchers Say
Delay 90-120 minutes after waking. Cut off 8-12 hours before bed. 1-3mg/kg body weight.
No caffeine after 11 AM. Caffeine reduces deep sleep by 20% even when taken earlier.
Morning-only for longevity. Filtered brewing removes cholesterol-raising diterpenes.
Avoids caffeine entirely for emotional stability and sleep protection.
Detailed Answer
Caffeine timing may matter more than dose. Huberman recommends delaying 90-120 minutes after waking to allow the natural cortisol pulse to clear adenosine. Attia is stricter: no caffeine after 11 AM, citing Walker's data that caffeine reduces deep sleep by 20%.
Patrick shows morning-only coffee drinkers have younger epigenetic ages. She recommends filtered brewing to remove cholesterol-raising diterpenes. Johnson avoids caffeine entirely. Hyman lists it among substances to eliminate during health resets.
Half-life is 5-6 hours: a 2 PM coffee still has 50% active at 8 PM. The minimum consensus: never after early afternoon.
Related Questions
Is coffee healthy?
Patrick shows coffee drinkers have lower all-cause mortality and younger epigenetic ages. Benefits come largely from polyphenols, not caffeine itself.
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