Scientists studied the number of prescriptions given to 200,000 patients in Britain at least a year before they were diagnosed with diabetes and compared this to the number given to 800,000 non-diabetics of the same age and sex. They found that those prescribed at least two courses were at higher risk of being diagnosed with Type-2 diabetes. After two to five courses of penicillin the risk rose by eight per cent, while it rose by 23 per cent after five courses.

For quinolones, another type of antibiotic, diabetes risk went up by 15 per cent for those prescribed two to five courses and by 37 per  “Our findings are important, not only for understanding how diabetes may develop, but as a warning to reduce unnecessary antibiotic treatments.”the lead investigator informed. We have seen that resistance is caused by antibiotic misuse but now we have data that it causes diseases.