If you have been on any antibiotic treatment recently, they kill off the good bacteria that supresses HPylori bacteria in the stomache, many people have this bacteria and do not know it until antibiotics kill all good and bad, but this bacteria can survive some antibiotics, and the good bacteria cannot, so the HPylori thrives
in and creates
excess acid, which if left untreated
can cause ulcers and stomache cancer
in extreme cases, and because it increases acid, it can also irritate and burn the