Northern berries in general and cranberries and blueberries in particular contain a unique set of minerals and vitamins, which, in fact, determines their healing properties. So, the composition of these berries includes calcium, sodium, potassium, iron, phosphorus, molybdenum, manganese, copper, barium, boron, magnesium, nickel and other trace elements. The list of vitamins that blueberries and cranberries are rich in is quite impressive. These are ascorbic acid, B vitamins, as well as vitamins A, K, PP, P, etc.