Medically reviewed by Kira Graves, PhD Vitamin D is an essential nutrient you obtain primarily from sun exposure. If you ...

Fluctuations in your energy levels could serve as an early indicator of a vitamin C deficiency. In fact, one of the earliest signs of vitamin C deficiency is persistent fatigue and general weakness.

Another drawback to vitamin C being water-soluble is that it's easily lost through urine. Caffeine is a stimulant and has a ...

Schiff said muscle pain that feels similar to growing pains can be a sign of a vitamin D deficiency, as can something called ...

Vitamin D deficiency, affecting 1 in 4 US adults, can cause subtle symptoms like bone and joint pain, muscle weakness, teeth ...

There are a number of key vitamins and minerals that the body requires to function properly, one of those key vitamins is ...

It can compromise the immune system, putting you at greater risk of sickness and winter viruses - including flu ...

You'll notice that many overlap and -- who ... Beta-carotene is the most common example of provitamin A. To avoid vitamin A deficiency with your diet, eat these foods high in vitamin A ...

Vitamin B12 deficiency is primarily caused by a lack of vitamin B12-rich foods in the diet though other factors can also ...

The majority of menopausal women are deficient. Experts weigh in on the benefits of taking a vitamin D supplement in ...

Vitamin D's deficiency can disrupt hormonal balance, leading to fatigue, mood swings, and even weight management issues.