General Knowledge - Basic General Knowledge - Discussion

@Rory.

Vitamin D symptoms-defective calcification of bones.

What are skin oil? Explain.

What is the role of vitamins in human body?

Explain the advantage of vitamin D?

Can anybody answer this what does vitamin D do?

How can vitamins do great duty?

Our bodies manufacture vitamin D when the sun's ultraviolet B (UVB) rays interact with 7-dehydrocholesterol (7-DHC) present in the skin.

"However, we can produce only a limited amount of vitamin D from UVB. A few minutes at midday are sufficient for many Caucasian".

Your body is able to produce its own vitamin D3 when your skin is exposed to the sun's ultraviolet rays, specifically ultraviolet (UVB) radiation. When UVB rays hit your skin, a chemical reaction happens: Your body begins the process of converting a prohormone in the skin into vitamin D. In this process, a form of cholesterol called 7-dehydrocholesterol (7-DHC), naturally found in your skin, absorbs the UVB radiation and gets converted into cholecalciferol. Cholecalciferol is the previtamin form of D3. Next, the previtamin travels through your bloodstream to your liver, where the body begins to metabolize it, turning it into hydroxyvitamin D, which is also known as 25-hydroxyvitamin D or 25(OH)D. The kidneys then convert the 25(OH)D into dihydroxyvitamin D, also called 1,25-dihydroxyvitamin D or 25(OH)2D -- this is the hormone form of vitamin D your body can use.

No we don't get vit D in the evening only in morning between seven to ten.

Is we get vitamin D at evening?