How Is Vitamin D Made From The Sun

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.

How is vitamin d made from the sun. When uvb rays hit your skin a chemical reaction happens. Panacea placebo or something in between. The body cannot make vitamin d when exposed to the sun s rays through a window as the glass blocks the sun s uvb rays. Melanin which gives skin its colour absorbs uv radiation.

Much like the noble phytoplankton when rays from the sun strike your body you along with amphibians reptiles all bird species. Some people s skin is less able to make vitamin d than others. In humans the most important compounds in this group are vitamin d 3 also known as cholecalciferol and vitamin d 2 ergocalciferol. Vitamin d from sunlight acts as a pro hormone which converts into 25 hydroxyvitamin d or vitamin d3 in your body.

Sunlight doesn t work quite the same way for us but is still just as important. Supplemental vitamin d gets carried on little fat taxis known as chylomicrons and lipoproteins by contrast sun derived vitamin d travels more slowly via a special carrier protein called vitamin d binding protein dbp. The best place to get vitamin d is from your skin being exposed to the uv b rays that are in normal sunlight. Uvb through sunlight the most natural way to get vitamin d is through the sun.

The liver releases vitamin d from sunlight on different proteins than supplemental vitamin d. Of course you have to understand the difference between the 2 types of uv rays that penetrate the earth s ozone layer. The success of this step depends on the amount of melanin present in our skin and our exposure to uv rays from the sun. The sun is your best source of vitamin d there s good reason why vitamin d is called the sunshine vitamin when your skin is exposed to sunlight it makes vitamin d from cholesterol.

One is a great source of vitamin d uvb and the other can be harmful uva even deadly. First uvb rays from the sun convert 7 dehydrocholesterol 7 dhc a substance present in our skin into pre vitamin d3. The major natural source of the vitamin is synthesis of cholecalciferol in the lower layers of skin epidermis through a chemical reaction that is dependent on sun exposure specifically uvb radiation. When we are exposed to ultraviolet b light from the sun or artificial sources our bodies create vitamin d 3 or cholecalciferol photochemically in our skin.