What to watch with FUT2 and Fruchtbarkeit?

The link between FUT2 variants and fertility is not well established. FUT2 determines secretor status and affects fucosylation of glycoproteins, which can influence gut microbiome composition and vitamin B12 absorption. Some research suggests secretor status may be associated with risk of urinary tract infections or bacterial vaginosis, which could indirectly affect fertility. However, direct, reproducible studies linking FUT2 variants to male or female fertility are lacking. Consumer DNA tests like MyBody-X may report FUT2, but clinical utility for fertility is unclear. Ensuring adequate vitamin B12 intake and supporting a healthy gut microbiome are general recommendations, but specific adjustments based on FUT2 are not evidence-based. For fertility concerns, focus on established factors such as hormonal balance, cycle regularity, and semen quality.