Vitamin D

Vitamin D is often used by people who have low exposure to sunlight or use a sunblock daily, vegetarians, vegans, pregnant and breast feeding women, older people and those concerned about osteoporosis may wish to choose a vitamin D supplement. Vitamin D, is a fat-soluble substance, which is not truly a vitamin, since it can be manufacturered by the body by the presence of sunlight on the skin.

	HealthAid Super A&D Natural Vitamins 60 capsules HealthAid Super A&D Natural Vitamins. Vitamin A is required by the body for growth, good vision and healthy skin. Vitamin D is essential for the normal development of bones and teeth.
	£3.91 Quantity
	HealthAid Vitamin A&D 60's An essential supplement for growth and development
	£3.91 Quantity
	Lifeplan Vitamin D 400iu 60's Vitamin D aids the absorption of calcium from the diet and is required for the maintenance of healthy bones and teeth.
	£6.84 Quantity

In humans the active form produced by ultraviolet light is cholecalciferol (vitamin D3). This form is not produced by plants and therefore can only be found in the diet from animal foods or fortified plant products. Vitamin D is essential for development bone growth and density, by increasing the intestinal uptake of calcium. This regulation is accomplished by the so-called vitamin D endocrine system, which functions in a way similar to the thyroid hormone. Vitamin D is also essential for heart functioning and helps to produce happy hormones which regulate the natural body rhythm. Vitamin D is found in dairy products, fish and meat. Deficiency causes rickets (child bone mineralization failure), poor growth, poor bone mineralisation (osteomalacia) and joint pain. It also interferes with T lymphocyte-mediated immunity. This means that antigens of xenobiotics (foreign substances or cells) in the body are no longer recognized, or that autoimmune disease may occur. Autoimmune disease cause the immune system to battle private body cells, rather than xenobiotics. Vegetarians, vegans, people with osteoporosis, osteomalacia, rickets, SAD syndrome or depression may wish to supplement with Vitamin D.