What role does CYP1A2 play in stress?

CYP1A2 is a cytochrome P450 enzyme primarily known for metabolizing caffeine and certain drugs. Its direct role in stress is not well established. Indirectly, it may influence stress by regulating caffeine clearance – fast metabolizers (e.g., *1F allele carriers) break down caffeine quickly, potentially reducing its stress-exacerbating effects. CYP1A2 also participates in melatonin metabolism, which could affect circadian rhythms and stress resilience. However, the evidence is mostly mechanistic; robust human studies linking CYP1A2 variants to stress responses are lacking. Single gene variants have small effects. For stress optimization, focus on sleep hygiene, exercise, and a balanced diet rather than relying solely on CYP1A2 genetics.