How are FADS1 and Fruchtbarkeit related?

The provided context does not contain a direct link between FADS1 and fertility. FADS1 encodes a delta-5 desaturase involved in polyunsaturated fatty acid metabolism (e.g., omega-3 and omega-6). These fatty acids influence inflammation and hormone signaling, which could theoretically affect fertility. However, no specific studies or markers in the given data support this relationship. The evidence is therefore unclear. Without direct sources from the context, this question should be approached cautiously. DNA testing for FADS1 variants to assess fertility is not clinically validated at present.