Food Sources of Vitamin D

Farm-raised fish and grain-fed meat dominate restaurant menus and grocery stores, providing substantially less vitamin D than wild or pasture-raised equivalents. Farm-raised fish contain approximately four times less vitamin D than wild-caught fish. Confined pigs and chickens have approximately three times less vitamin D than free-range animals due to lack of sunlight. Farming practices and animal husbandry conditions dramatically alter the vitamin D content of animal products.