Vitamin B 7, also called biotin, is an important element to keeping your metabolism running smoothly and efficiently. It can also aid in the growth of cells, help release energy from food and regulate blood sugar levels. Since there is a lot of food with biotin this type of deficiency is quite rare.
Though it is rare, it is not impossible. True, there are many types of food with biotin but not everyone has access to quality food or likes to eat foods that are good for them.