Diseases caused by a lack of vitamins
The lack of vitamins in the human body can lead to a variety of diseases, which are due to the impossibility of biochemical reactions involving these vitamins.
For a long time, mankind has known the disease underThe name of scurvy. This sickness was often suffered by sailors who went on long voyages for many months. Scurvy is manifested by increased fragility of the walls of the blood vessels, bleeding gums, loosening and loss of teeth. Only after the discovery of vitamins it was found that scurvy develops with a deficiency in the body of vitamin C (another name for this vitamin is ascorbic acid). It turns out that in the absence of this substance in humans, the collagen protein synthesis is disrupted, which leads to such undesirable consequences. And the fact that scurvy in the Middle Ages was often found in seafarers, is due to the fact that in former times the supply of fresh fruit and vegetables quickly ended on ships. At present, it is known that ascorbic acid is found mainly in products of plant origin. Earlier this fact was not known (especially as about the vitamins as such in the scientific community began to speak only in 1880). Now the scurvy disease caused by a lack of vitamin C, is not so common, and the main cause of its occurrence are serious disorders in nutrition. If you daily eat at least a small amount of vegetables or fruits, then you hardly need to fear the appearance of this disease.
To diseases that are caused by a lack of vitaminA, refers to hemeralopia, or, as the people call this disease, "night blindness." With this pathological condition, a person sees well during the day, but at dusk, he very badly distinguishes surrounding objects. This condition can be regarded as an early sign of the emergence of vitamin A deficiency in food. With a longer vitamin A deficiency in human nutrition, xerophthalmia develops, which is characterized by dryness of the cornea of the eye. Often the basis for the development of these diseases is the violation of absorption and transport in the body of fats. Since vitamin A is fat-soluble, due to the violation of the metabolism of fats in the body and there is a lack of this biologically active substance, although the food itself can contain a sufficient amount of vitamin A. If, however, in the diet there is a lack of vitamin A, then this situation is easy Correct the inclusion in the menu of dishes from carrots, tomatoes, dill.
Vitamin D deficiency causes illness in childrenCalled rickets. With this disease, the normal course of the process of bone mineralization is disrupted, and the development of teeth is delayed. The sources of vitamin D are such foods as liver, butter, egg yolk. A large amount of vitamin D is also found in fish oil.
Vitamin E is very important biologicallyActive substance, which contributes to the physiological processes of development of the reproductive system. With a lack of vitamin E in men, sperm production is disrupted, and in women, there may be abnormalities in the development of the fetus. The daily dose of vitamin E is usually provided by the use of products such as vegetable oil, cereals, lettuce, cabbage.
The listed diseases give a clear idea of theThe fact that the lack of certain vitamins in human nutrition causes the development of various pathological conditions. Therefore, in order to prevent the development of these diseases, we should strive to make our diet as diversified as possible, including various products of both animal and vegetable origin. This approach will, if possible, ensure the maximum diversity of biologically active substances in the diet and prevent the development of diseases caused by a lack of vitamins.