The body does not produce vitamin A; however the body can make vitamin A from a substance called beta carotene. Beta carotene is the orange/yellow color found in fruits and vegetables like carrots, pumpkin, peaches, apricots and sweet potatoes and is often referred to as the precurser of vitamin A or pre-formed vitamin A.
Vitamin D
Vitamin D.
Vitamin D, of course.
Vitamin A and Vitamin E are the 2 i know of.
Vitamin D
Vitamin D is a fat-soluble vitamin that can be synthesized by the human body. When the skin is exposed to sunlight, specifically ultraviolet B (UVB) rays, it converts 7-dehydrocholesterol into vitamin D3 (cholecalciferol). This vitamin plays a crucial role in calcium absorption and bone health. However, adequate sunlight exposure and dietary sources are essential for maintaining optimal levels.
Because it is manufactured in the skin in the presence of sunshine.
The only way to reduce vitamin D in the body is to stop intake of vitamin D.
Schiff Nutrition in Utah.
Cholesterol or metabolites of cholesterol
vitamin D
vitamin c is NOT stored in the body. It is excreted. So, there is no danger of build up of vitamin c in the body , if high doses are taken. Vitamin c is very good for us.