As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

Experiencing fatigue might signal low vitamin B12 levels. Vital for nerve function and red blood cell formation, this nutrient is found in foods such as eggs, milk, cheese, animal liver ...

You've likely heard about the benefits of vitamin B12 (also known as cobalamin), which assists your body in producing red blood cells, boosts energy levels ... are also high in vitamin B12.

A 2022 national survey found that 13.5% of U.S. adults said they felt “very tired” or “exhausted” most days or every day over ...