Can LCT help with Schlaf?

There is no scientific evidence that the LCT gene (lactase persistence) directly influences sleep. LCT determines whether lactose can be digested after infancy. No robust study links LCT variants to sleep quality, duration, or disorders. Indirectly, undiagnosed lactose intolerance might cause gastrointestinal discomfort that disturbs sleep, but this is a digestive issue, not a direct genetic sleep aid. Consumer DNA tests often overstate the relevance of single genes. The evidence for LCT helping with sleep is essentially absent; it falls into the marketing or speculative category. For sleep problems, focus on proven factors like sleep hygiene, stress management, caffeine intake, and medical evaluation rather than a single SNP.