Search results
Results from the WOW.Com Content Network
Vitamin D is produced in the keratinocytes of two innermost strata of the epidermis, the stratum basale and stratum spinosum, which also are able to produce calcitriol and express the vitamin D receptor. [171] Vitamin D 3 is produced photochemically from 7-dehydrocholesterol in the skin of most vertebrate animals, including humans. [172]
Because many fungi and protozoa cannot survive without ergosterol, the enzymes that synthesize it have become important targets for drug discovery. In human nutrition, ergosterol is a provitamin form of vitamin D 2; exposure to ultraviolet (UV) light causes a chemical reaction that produces vitamin D 2.
Reference: National Institutes of Health, Office of Dietary Supplements. Most people need about 600 IU per day, but people over the age of 70 need a little more, somewhere around 800 IU to reduce ...
In addition to vitamin D, cow’s milk is also rich in calcium and vitamin B12, both of which are essential for numerous body functions including supporting bone health and energy production ...
Ergocalciferol, also known as vitamin D 2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement [3] to prevent and treat vitamin D deficiency [4] due to poor absorption by the intestines or liver disease. [5]
READ MORE. How much vitamin D do I need? Older adults need about 600 to 800 IU of vitamin D daily, depending on their age. You can get this through a combination of sun exposure and vitamin-D rich ...
Alfacalcidol (or 1-hydroxycholecalciferol) is an analogue of vitamin D used for supplementation in humans and as a poultry feed additive. Alfacalcidol has a weaker impact on calcium metabolism [ 3 ] and parathyroid hormone levels [ 4 ] than calcitriol ; but significant effects on the immune system , including regulatory T cells . [ 5 ]
Sunlight and vitamin D-rich foods are the best ways to get this important nutrient. According to a large meta-analysis of randomized controlled trials, taking vitamin D supplements was linked with ...