The use of antibiotics has long been linked to deprivation of gut bacteria, which are needed to help build up the immune system. One study shows that the makeup and function of gut bacteria can mostly recover after antibiotic treatment in healthy people. So essentially that means we are able to regenerate our gut bacteria and environment which is important for our general health. The concern, however, relates to potentially losing some of those beneficial bacteria permanently after multiple courses of antibiotics during our lifetime. We should therefore aim to minimise the number of antibiotic courses we take wherever possible, by only taking antibiotics when absolutely necessary. Find out more about what you can do to prevent antibiotic resistance.