A probiotic a day for babies from a week old could protect them from asthma, diabetes and cancer.
Very young children are believed to need the proper balance of bacteria in their gut to help prevent these illnesses.
However being born by cesarean or prematurely changes their gut bacteria, as may antibiotics given to their mother in pregnancy and modern living conditions.
Scientists have found a probiotic, similar to the yogurt drinks taken by adults, may help restore the right balance of gut bugs in breastfed babies.
