D but needs sunshine (w/o sunscreen) to do it.
Regulating Calcium and phosphate in the body. Vitamin D can be synthesised from the action of sun exposure on cholesterol in the skin. So get out in the sunshine, it's good for your bones.
Vitamin D is synthesized at the skin. It is synthesised by the reaction between the sun's rays and estrogen (Actually look up to be sure, it could be a different steroid very similar to estrogen)
Vitamin D improves the absorption of zinc, magnesium, calcium and phosphate in the body. This vitamin prevents rickets and improves the health of bones.
The vitamin that is best for skin is Vitamin E. This can help with skin diseases, and can even help to prevent skin cancer in those with skin diseases.
Vitamin D.
vitamin E
Vitamin A and Vitamin E are the 2 i know of.
No. human body can not synthesize vitamin B 12. You have to consume the same through your food only. Only non-veg food contains the most of the vitamin B 12 you get. Strict vegans should be given injections of vitamin B 12.
Vitamin D, of course.
The Sun causes the synthesis of Vitamin D in the skin.
Vitamin D is synthesized in the skin with the help of sunlight.
All mammals can naturally synthesise vitamin D from cholesterol via sunlight. All ingested forms of vitamin D are actually additives or supplementary; there is no vitamin D in milk or other staple foods (it is added, and therefore not natural). Strictly speaking, vitamin D is not a vitamin at all, as a vitamin is, by definition, a chemical compound that cannot be synthesised by an organism.