How are LCT and Fruchtbarkeit related?

The relationship between LCT (lactase persistence) and fertility is not well established in the scientific literature. LCT variants determine adult lactose digestion, but a direct link to fertility is lacking. Some indirect hypotheses exist regarding dairy consumption and reproductive health, but these are not supported by strong evidence. The provided context does not include any relevant studies on LCT and fertility. Therefore, the evidence level is unclear. Consumers should be cautious of claims suggesting a direct genetic influence of LCT on fertility. Further research is needed.