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

New research finds that taking a daily vitamin D supplement may help lower blood pressure, especially for older adults with ...

Vitamin patches are making their way into the main stream, but there's little evidence that they work. Are they worth a try, ...

Vitamin D is produced naturally by the body when it's exposed to sunlight, but during the UK winter months, many people are ...

Vitamin B12 is an essential nutrient found in a wide variety of foods. Learn more about the best food sources of vitamin B12 ...

By staying alert to skin symptoms and knowing what to look for you can take the first steps toward addressing a potential ...

Vitamin C supports our immune systems, helps our bodies heal wounds, protects our joints and contributes to collagen ...

Can vitamin D supplements prevent heart disease? A new study finds no impact on cardiac health in older adults, even with ...

Vitamin D, also known as the "sunshine vitamin," does much more than strengthen bones; it can support the immune system, lift ...

Vitamin D supplementation may help manage hypertension, particularly in older adults with overweight or obesity, a new study ...

High levels of vitamin C can interfere with multiple kinds of medications and results of certain medical tests such as blood ...