Organ meat intake was related to higher total sperm count, higher sperm concentration and greater sperm motility. Compared with non-consumers, men who reported consuming organ meats had 53% (34% to 66%) higher total sperm count, 41% (20% to 56%) higher sperm concentration, and 8 (4 to 12) percentage units higher progressive motility after adjusting for potential confounders. We examined whether nutrients concentrated in organ meats explained these associations. Further adjustment for intakes of animal protein, animal fat, cholesterol, copper, manganese, iron or vitamin B12, alone or in combination, did not affect the association of organ meat intake with semen parameters (data not shown). Intakes of poultry or fish were not related to any of the semen quality parameters examined.