Is CLOCK useful for Fruchtbarkeit?

The provided context does not address whether the CLOCK gene is useful for fertility. CLOCK is a core circadian rhythm gene that influences hormone secretion, sleep-wake cycles, and metabolism. Mechanistic evidence suggests that circadian disruption may impair female fertility – for example through altered melatonin and cortisol levels or ovarian dysfunction. In males, links to sperm quality have been discussed. However, human evidence remains moderate and insufficient for clinical recommendations. Testing for CLOCK polymorphisms (e.g., rs1801260) currently has no validated utility in fertility counseling. Lifestyle factors such as consistent sleep, light exposure, and stress management are more relevant based on current knowledge. Anyone with specific fertility concerns should seek medical evaluation – a DNA test for CLOCK does not replace that.