Vitamin D


First Used Jan 1985

Current Users 1237

Loyalty 36%

Average User Health


728 ratings

5 stars
199 people
4 stars
190 people
3 stars
217 people
2 stars
79 people
1 star
43 people

Popular Concurrent Supplements

Vitamin B12
Fish Oil
Folic Acid
Green Tea
Digestive Enzymes

Vitamin D is found in many dietary sources, such as fish, eggs, fortified milk, and fish oil. The sun contributes significantly to daily production of vitamin D; as little as 10 minutes of exposure may be enough to prevent deficiencies. The term "vitamin D" refers to several different forms of this vitamin. Two forms are important in humans: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D2 is synthesized by plants. Vitamin D3 is synthesized by humans in the skin when it is exposed to ultraviolet B (UVB) rays from sunlight.

The major biologic function of vitamin D is to maintain normal blood levels of calcium and phosphorus. Vitamin D aids in the absorption of calcium, helping to form and maintain strong bones. It is used, alone or in combination with calcium, to increase bone mineral density and decrease fractures.

Because Crohn's disease limits the absorption of vitamins into the blood stream it can be difficult to maintain proper levels of Vitamin D and therefore to maintain healthy bones. Vitamin D is often prescribed to Crohn's patients to prevent poor bone density, increased fracturing, and bone loss among other symptoms.
Information from Mayo Clinic and Wikipedia

Current Users' Health Compared to people not currently on Vitamin D

The data on this page is from personally submitted user reviews and ratings of treatments, and users who have tracked their health over time while taking these treatments. The data is of a small sample size of users and is subject to biases of side effects of treatments, perceived/expected efficacy, and more. For now, the data should be taken with a grain of salt.