What are the benefits of eating cod liver oil for middle-aged people?

Cod liver oil has very high nutritional value and is a health food suitable for all ages. There are many types of cod liver oil. Among them, shark liver oil is mainly used to lower blood lipids and is suitable for symptoms such as Alzheimer's disease. It is suitable for middle-aged and elderly people. The main function of cod liver oil is to promote calcium absorption, enhance immunity, brighten eyes and improve intelligence, and is suitable for babies. Take. Therefore, when choosing, be sure to choose the one that suits the symptoms.

Cod liver oil is rich in vitamin A and vitamin D. The main function of vitamin A is to maintain the body's normal growth, reproduction, vision, healthy epithelial tissue and anti-infection immune function. Vitamin A deficiency can cause skeletal growth retardation in children; affect the development of tooth enamel cells, resulting in imperfect teeth; damage to the epithelial tissue structure; and low immune function can easily cause various infections of the respiratory tract, digestive tract and urinary tract.

Vitamin A is mainly found in the livers of animals, especially fish livers, followed by milk and eggs.

The main function of vitamin D is to promote the absorption of calcium and phosphorus by the small intestinal mucosa and to promote the reabsorption of calcium and phosphorus by the renal tubules. Vitamin D deficiency can cause: reduction of calcium and phosphorus in the intestinal tract, bone-like tissue calcification disorders; rickets and osteomalacia.

Vitamin D is mainly found in the livers of animals, especially in the livers of marine fish. In addition, the human body can also absorb vitamin D from sunlight exposure, and 7-dehydrocholesterol in the skin can be converted into vitamin D under the action of ultraviolet rays.