describe benefit: Brain and Nervous System: DHA is one of the major structural fats of the brain and has an impact on the normal function of the nervous system. Intake of cod liver oil may help support brain and nervous system health. Bone Health: Vitamin D, a major component of cod liver oil, helps promote the absorption of calcium and phosphorus, which is essential for bone health. Immune system: Both vitamins A and D in cod liver oil have an impact on the normal function of the immune system. Eye Health: DHA is a key component in the retina, so cod liver oil intake may help maintain eye health. Skin health: May have some impact on skin health.