Essential M Review - Bring Back Your Youthful Health!
- POSTED ON Saturday, August 17, 2019
Vitamin D3 cholecalciferol is a steroid-derived hormone Essential M Review that is made naturally in the skin when exposed to solar ultraviolet B UVB radiation of 290-315 nm wavelength, which is within the spectrum that causes sunburn. The precursor is a cholesterol metabolite, 7-dehydrocholesterol, that is converted to previtamin D3, which then undergoes thermal isomerisation to form cholecalciferol. It is transported to the liver, where it is converted to 25-dihydroxycholecalciferol, which is then converted to calcitriol in the kidneys by the action of parathyroid hormone.
During winter in higher latitudes, the sun is too weak to make vitamin D effectively and the body relies on stores built up over summer. Vitamin D deficiency is becoming more common because exposure to sunlight is restricted by excessive clothing, sunscreen use and indoor lifestyles. Having a dark skin colour reduces skin synthesis and vitamin D metabolism is impaired by ageing.