Some interesting information about the vitamins

Fat-soluble vitamins. Characteristic

For the absorption of fat-soluble vitamins, which happens slowly, the food must be fat. Fat-soluble vitamins are A, D, E, K. Each vitamin has many groups in it. Thus, under the group A are known the vitamins A1 and A2, group D - D1, D2, D3, D4, D5, D6, etc. Fat-soluble vitamins from groups D, E, K are found in fruits and vegetables, and from group A are found only in animal products.

Vitamin A is called the vitamin of growth. It is found in animal products - liver, butter, egg yolk, milk and others. Some plants contain carotene / pro vitamin A /, which in the intestine and the liver is broken down into vitamin A. The carotene is sucked in the gut only in the presence of fat. It provides normal vision, growth of the young organism, development of teeth and bones, strengthens the skin and mucous membranes, regulates the activity of thyroid hormones on metabolism has an action against loosing memory and more. The old human needs 6,0 to 8,0 mg vitamin A per day. Fruits contain a small amount carotene, with the exception of apricots, rosehips, plums, blackcurrant. More carotene containing vegetables - carrots, red peppers, tomatoes, parsley, green onions, spinach, lettuce, zucchini and more. The carotene in the plants is increased significantly when fertilizing the soil with nitrogen and phosphate fertilizers.

Vitamin D takes part in the formation of bone growth, teeth, regulates the use of calcium and phosphorus. In the vegetables, it is contained in the form of pro vitamin D, which under the action of ultraviolet light is converted into vitamin D. According to some authors, the conversion happens onto the skin and from there it is taken by the body. That is why it is recommended not to wash the skin of infants with soap. In the absence of vitamin D the rickets disease develops. This disease is the cause for the bones to remain soft and distorted due to insufficient content of calcium and phosphate salts in them. The human body needs daily from 0,01 to 0,02 mg of vitamin D. Sources of pro vitamin D are yeast, cabbage, spinach, etc. and a rich source of vitamin D is fish oil (interesting to know is that the Danish term is D vitamin fødevarer).

Vitamin E is involved in the activity of endocrine glands, particularly the gonads and influences the metabolism, the distribution of fat and water in the body, ensures the proper functioning of the muscles and the nervous system. Deficiency leads to infertility and miscarriages. It was found that vitamin E preserves very well vitamin A, so when there is a shortage of vitamin E, there is also deficiency of vitamin A. The human body needs daily from 10 to 25 mg vitamin E. In large quantities it is in wheat germ in leafy vegetables, the green peas, carrots in, the nuts of almond, walnut and in others.

Those were just some of the main vitamins needed for the healthy life of the humans. Regular intake is necessity.