According to National Institutes of Health, D3, a fat-soluble vitamin, is present in few foods, but is primarily produced by the body through exposure to sunlight. Because D3 is necessary for calcium absorption, most people consume additional D3 through dietary supplements as well through food.
Usually, the body synthesizes vitamin D3 using UVB rays from the sun. With the increased use of sunscreens and limited sun exposure, however, it is often difficult to get enough sun to make adequate amounts of vitamin D3. For...
Vitamin D, which comprises both vitamin D2 and D3, is not a true vitamin, as it is made in our own bodies with the help of the sun's ultraviolet rays. Few foods naturally contain vitamin D3, and humans receive most of their dai...
Together, vitamin K2 and vitamin D3 can have beneficial effects on bone health. When combined, they can partially prevent bone loss caused by estrogen deficiency, according to a 1999 study published by Yoshiaki Somekawa and col...
It is a hormone that plays an important role in gene development. Sufficient levels of vitamin D are vital to prevent a variety of diseases, ranging from rickets to cancer, osteoporosis and inflammatory bowel disorders. The bod...
It plays a very important role in health. The active form of vitamin D is known as vitamin D3 or cholecalciferol. The recommended adequate intake (AI) level for vitamin D3 is 5mcg daily for adults 31 to 50 years old. After age...
