Vitamins are a group of organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. Vitamins can be roughly divided into water-soluble vitamins and fat-soluble vitamins. Next, let's talk about fat-soluble vitamins.
What are fat-soluble vitamins?
Fat-soluble vitamins are vitamins that are insoluble in fat and organic solvents. They can be stored in large amounts in the body, mainly in the liver. The principle of fat-soluble vitamin intake should be to eat small meals frequently. Excessive intake at one time can easily cause poisoning. Common fat-soluble vitamins include vitamins A, D, E, and K.
Vitamin A
Vitamin A promotes growth and maintains the normal function and structure of various epithelial tissues such as skin, conjunctiva, and cornea. Common symptoms of vitamin A deficiency include dry and rough skin, softening of the cornea, and night blindness.
Food sources: animal products, fish liver oil, egg yolk, milk, and animal liver.
Vitamin D
Vitamin D is mainly found in animal tissues and has an important influence on calcium and phosphorus metabolism and the growth and development of children's skeletal system. It directly promotes the deposition of bone in tissues and can be used to prevent and treat rickets. Adequate exposure to sunlight can effectively prevent vitamin D deficiency.
Food sources: animal products, mushrooms, seafood, fish roe, animal liver, egg yolk, cream and cheese, lean meat, nuts, etc.
Vitamin E
Vitamin E, also known as tocopherol, has an impact on reproductive function and lipid metabolism. It can regulate gonadal function and prevent or inhibit the oxidation of unsaturated fatty acids and vitamin A. It is often used in the prevention and treatment of habitual abortion, threatened abortion, infertility, menopause syndrome, coronary heart disease, and hyperlipidemia. It also has anti-aging and cataract prevention effects.
Food sources: wheat germ oil contains a higher amount, fruits, vegetables, nuts, lean meat, dairy products, eggs, pressed vegetable oils, orange peel, etc.
Vitamin K
The human body requires a very small amount of vitamin K, but vitamin K plays an important role in promoting bone growth and normal blood clotting. Vitamin K can enhance the absorption and utilization of carbohydrates, reduce menstrual bleeding, prevent internal bleeding and hemorrhoids, and also prevent osteoporosis.
Food sources: fish liver oil, egg yolk, cheese, seaweed, lotus root, spinach, cabbage, lettuce, broccoli, peas, soybean oil, etc.
