B vitamins are essential nutrients they support the correct functioning of the nervous system, they are necessary for healthy skin, muscle tone and maintenance of the gastrointestinal tract. B vitamins are important as they support the process of carbohydrate and fat metabolism and encourage the release of energy from food. B Vitamins work together and are often taken as a complex to avoid deficiencies of other single B vitamins. However, when a deficiency of a specific B vitamin has been diagnosed by a health care professional it may be necessary to increase the level of an individual B vitamin to our daily diet, for example research indicates that Vitamin B6 may support essential fatty acid metabolism and fluid balance. Good sources of vitamin B include whole grains, legumes, bananas, nuts and seeds and brassica vegetables.