Can FADS1 help with fertility?

Whether FADS1 can help with fertility is not clearly established by current evidence. FADS1 encodes a delta-5 desaturase involved in omega-3 and omega-6 fatty acid metabolism. Some studies suggest that certain FADS1 variants are associated with altered levels of arachidonic acid and EPA/DHA – fatty acids that may influence inflammation, hormone synthesis, and sperm quality. However, direct causal evidence for fertility outcomes in humans is weak and inconsistent. Most data come from animal models or observational studies, not randomized controlled trials. MyBody-X may include FADS1 in its DNA test, but its clinical utility for fertility is limited. Factors like diet, lifestyle, and other genes (e.g., MTHFR) likely play a larger role. Consultation with a reproductive specialist is recommended. Evidence grade: unclear/mechanistic.