Vitamin B, is actually a whole family of closely related, yet distinctly different vitamins. There are 13 vitamins that our body needs, eight of which make up the B-group (or B-complex) vitamins.
The body uses energy-yielding nutrients such as carbohydrates, fat and protein for fuel. The B-group vitamins help the body to use that fuel. Other B-group vitamins play necessary roles such as helping cells to multiply by making new DNA.
Food sources of the B-group vitamins
Even though the B-group vitamins are found in many foods, they are water soluble and delicate. Food processing can reduce the amount of B-group vitamins in foods.
The body has a limited capacity to store most of the B-group vitamins (except B12 and folate, which are stored in the liver). A person who has a poor diet for a few months may end up with B-group vitamins deficiency. For this reason it is important that adequate amounts of these vitamins be eaten regularly as part of a well-balanced, nutritious diet.