Can CLOCK help with longevity?

CLOCK genes regulate the circadian rhythm. Circadian disruption is linked to aging, metabolic syndrome, and reduced lifespan in animal models and some human observational studies. However, direct evidence that specific CLOCK polymorphisms (e.g., rs1801260) robustly predict human longevity is weak. Most findings are from candidate-gene studies with small effect sizes and inconsistent replication. Large GWAS on longevity have not identified CLOCK as a top hit. Practical takeaway: maintaining a stable sleep-wake cycle, timed eating, and proper light exposure supports circadian health and may contribute to healthspan, but this is not gene-specific. A consumer DNA test for CLOCK variants does not provide actionable longevity guidance. Evidence: mechanistic/unclear. Avoid overinterpretation.