Can CYP1A2 help with Schlaf?

CYP1A2 is primarily involved in caffeine metabolism. Individuals with the slow variant (e.g., *1F/*1F) metabolize caffeine more slowly, which can prolong wakefulness and potentially impair sleep quality, especially if caffeine is consumed later in the day. However, direct, robust evidence linking CYP1A2 genotype to sleep disorders or sleep duration is lacking. The evidence is largely mechanistic, based on caffeine pharmacokinetics. A genetic test may offer clues, but it should not be the sole basis for sleep recommendations. Other factors like stress, light exposure, and sleep hygiene are usually more influential. MyBody-X offers CYP1A2 testing, but without clinical validation for sleep, the utility remains uncertain.