Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

Learn about the best time of day and way to take vitamin D and if you should consider a supplementing with this nutrient.

Are you noticing thinning, a receding hairline, breakage or slower-than-normal hair regrowth lately? You might be wondering ...

2022 — New research has found significant differences between the two types of vitamin D, with vitamin D2 having a questionable impact on human health. However, the study found that vitamin D3 ...

Deficiency of vitamin D has been linked to issues in bone health, but recent studies are revealing a more complex ...

Vitamin D deficiency in early life may contribute to biological processes that raise the risk of autoimmune conditions, ...

Individuals on low-fat diets or suffering from conditions, which impair fat absorption like celiac disease, Crohn's disease, may not accurately absorb Vitamin D from supplements. The type of ...

The faint sunrays are not enough to produce vitamin D, creating a seasonal deficiency. A research study from McGill ...

New research suggests the seasonal shift to winter could have serious long-term consequences, especially for our children.

New research suggests that vitamin D supplementation may improve blood sugar control and reduce inflammation in type 2 diabetes, offering a promising addition to current treatments. Study ...

such as vitamin D and calcium. After researching and testing various vitamin K supplements, we have identified the top options that provide the most effective dosage and type of vitamin K for ...

All of those picks — organized by skin needs and type — are below ... given that it’s formulated with a super-stable form of vitamin C. I’d rather spend close to $200 on a vitamin C ...