What to watch with LCT and fertility?

There is no established scientific link between LCT (lactase gene) variants and fertility. LCT determines lactose tolerance and is not directly involved in reproductive biology. Some speculative theories suggest that undiagnosed lactose intolerance could indirectly affect fertility through gut inflammation or nutrient deficiencies (e.g., calcium, vitamin D), but robust clinical evidence is lacking. MyBody-X does not offer fertility-related tests, and LCT results are interpreted only for lactose digestion. Consumers should not extrapolate fertility implications from a single gene test. For fertility concerns, consult a reproductive specialist. The evidence for any LCT–fertility connection is 'unclear' and not supported by current research.