Evidence check: NutriCare | INFINITY DNA-Test in the context of Schlaf

The NutriCare DNA metabolism test and the INFINITY DNA test from MyBody-X are marketed in the context of sleep, but the scientific basis is weak. Sleep is influenced by numerous factors; genetics contribute only a small part. Some genes like CLOCK, PER3, or ADRB1 have been associated with chronotype or sleep duration, but effect sizes are small and insufficient for personalized recommendations. These tests often analyze variants with unclear clinical relevance. There are no randomized controlled trials showing that test results lead to improved sleep. The evidence is therefore marketing: the tests may satisfy curiosity but cannot replace medical sleep advice. For sleep issues, established methods like sleep hygiene, cognitive behavioral therapy, or medical evaluation (e.g., polysomnography) are far better supported. Consumers should not rely on DNA results to treat sleep disorders.