Altogether, there are eight B vitamins, each with its purpose and role within the body. The B vitamins are all water-soluble and crucial for cell metabolism, normal functioning of the central nervous system, and the formation of red blood cells. All the B vitamins we need should be available through our diet. The B vitamins help to convert food into fuel and metabolise fats and proteins.

Vitamin B6 is in foods, including meat, poultry, fish, seafood, dairy, lentils, beans, carrots, spinach, bananas, brown rice, and whole grains.

Although rare, a vitamin B6 deficiency can cause muscle weakness, nervousness, mood changes, difficulty concentrating and short-term memory loss.