Vitamins are a group of organic compounds, also known as ‘vitamins’, which play a vital role in the human body. The following is a detailed introduction to vitamins:
1.Classification of vitamins
Vitamins can be divided into water-soluble vitamins and fat-soluble vitamins according to their solubility.
Water-soluble vitamins: mainly including vitamin B (such as vitamin B1. B2. B6. B12. etc.) and vitamin C. These vitamins are easily soluble in water, not easy to be stored in the body, and need to be ingested daily from the diet.
Fat-soluble vitamins: mainly include vitamin A, vitamin D, vitamin E and vitamin K. These vitamins are insoluble in water and soluble in fat and organic solvents, which are not easy to store in the body and are not easy to be discharged from the body, so excessive intake may cause poisoning.
2.Functions of vitamins
Vitamins in the human body to participate in a variety of biochemical reactions, to maintain the normal physiological function of the human body has an irreplaceable role. Specifically, different kinds of vitamins have different functions:
Vitamin A: can prevent and treat dry eye disease, maintain the integrity of the skin mucosa, promote growth and development.
Vitamin B: Includes a variety of different vitamins, such as vitamin B1 can maintain the normal function of the nervous system, vitamin B2 is involved in biological oxidation and energy metabolism in the body, and vitamin B6 is involved in the metabolism of amino acids and fats.
Vitamin C: has an antioxidant effect, can delay aging, promote iron absorption, enhance immunity and so on.
Vitamin D: its main function is to promote the absorption and utilization of calcium and maintain bone health.
Vitamin E: also a strong antioxidant, can protect cell membranes and DNA from free radical damage, prevention of cardiovascular and cerebrovascular diseases.
Vitamin K: mainly involved in the blood clotting process, promote wound healing.
3.Food sources of vitamins
Different kinds of vitamins exist in different foods. For example:
Vitamin A: mainly found in cod liver oil, animal offal, butter, and some vegetables and fruits (e.g. tomatoes, carrots, sweet potatoes, etc.).
Vitamin D: mostly found in egg yolks, dairy products, yeast, etc.
Vitamin E: mostly found in eggs, vegetable oils and other foods.
Vitamin K: mostly found in green leafy vegetables such as spinach and cabbage.
Vitamin B and vitamin C are widely found in a variety of foods such as lean meat, soybeans, grains, fresh vegetables and fruits.
4.Vitamin supplements
For some people, they may not be able to get enough vitamins through their daily diet due to dietary habits, physical conditions or special needs. At this time, vitamin supplements can be used under the guidance of a doctor or dietitian to supplement. Common vitamin supplements include vitamin A softgels, vitamin AD drops (capsule type), multivitamin tablets and so on. However, it should be noted that excessive vitamin supplementation may also lead to adverse consequences, so be sure to use them wisely under the guidance of a doctor.
To sum up, vitamins are one of the indispensable nutrients for human body, and play an important role in maintaining normal physiological functions of human body. In our daily life, we should pay attention to a balanced diet and reasonably match the type and quantity of food to ensure that we get enough vitamins and other nutrients.