What is and what it does?
Vitamin D is perhaps best known as the “sunshine vitamin.” Ultraviolet rays from the sun when the skin, causing vitamin D to be done. Can also be found in foods and supplements. This is one of the four fat-soluble vitamins. This means it is stored in fat tissue in the body and can accumulate to toxic levels with excessive consumption.
The main function of vitamin D is to maintain optimal levels of calcium and phosphorus. Studies have shown that it provides protection against hypertension, cancer, osteoporosis, type 1 diabetes and various autoimmune diseases.
What are sources of vitamin D?
The sunshine vitamin has its name from the fact that the sun helps the body produce vitamin D. The concern of skin cancer has caused many people to avoid sun exposure without protection. Fortunately, you can get enough vitamin D in your diet, so you do not want to risk the dangers of skin cancer from sun to those who are addicted to the sun as one of his sources, there are many factors that affect the amount you need. The season, time of day, cloud cover, pollution, and the amount of SPF latitude, geographic, and content of melanin in the skin are all possible obstacles.
Vitamin D is important for fat absorption, so anyone with a disease that reduces fat absorption may be at risk of deficiency. It is important to have controlled levels of vitamin D for people with conditions such as Crohn’s disease, celiac disease, cystic fibrosis, pancreatic enzyme deficiency, and surgical removal of part of the stomach or intestine.
Obesity: Research has shown low vitamin D levels in overweight and obesity. One possible reason is that vitamin D is absorbed by fat tissue and is not easily absorbed into the bloodstream.
Exposure to the sun: the sun’s ultraviolet rays have been a source of vitamin D in recent years. Because of the risk of skin cancer, many have reduced their exposure to the sun and began to use sunscreen when exposed, can help to reduce levels if corrections are not made to compensate for this loss of energy and or supplements.
Pigmentation of the skin: People with more melanin in dark skin. Melanin blocks ultraviolet light, and disrupts the synthesis of vitamin D.
Rickets: vitamin D
Rickets is a bone disease, which retains only children and adolescents. It is caused by a failure of osteoid to calcify in a person at a time. The lack of osteoid to calcify in the adult is called osteomalacia. Vitamin D deficiency rickets occurs in metabolites of vitamin D. Less often, lack of calcium and phosphorus also lead to rickets. Vitamin D-3 (cholecalciferol) is formed in the skin of a derivative of cholesterol under the influence of ultraviolet-B light. Ultraviolet light or cod liver oil was the only significant source of vitamin D in early 1920, when ergosterol (vitamin D-2) was synthesized from irradiated plant steroids.
During the Industrial Revolution, rickets appeared in epidemic form in temperate zones, where pollution from factories blocked the sun’s ultraviolet rays. Therefore, probably caused stunting of the infancy of environmental pollution.