What role does LDL play in fertility?

The provided context does not contain direct information linking LDL to fertility. In general, LDL is a carrier of cholesterol, which is a precursor for steroid hormones (e.g., estrogen, testosterone) essential for reproduction. Very low LDL levels might theoretically impair hormone synthesis, but the evidence for a direct, clinically meaningful role of LDL in fertility is weak and mostly mechanistic. Most research focuses on total cholesterol or HDL. No strong causal link is established. Caveat: LDL alone is not a fertility marker; comprehensive hormonal and metabolic assessment is required. Evidence is rated as 'mechanistic' or 'unclear'.