“These are micro-organisms that colonize your intestine and remove harmful bacteria. The best natural probiotics are in yogurt and soy yogurt, which can be eaten on a regular basis even without a prescription. But people consume them less these days. So it is available in tablet and liquid forms. Research is being conducted to see its impact on colon cancer and urinary tract infections,”explains Dr B S Ravindra, consultant gastroenterologist, BGS Global Hospital.