It is rumored that omeprazole may lead to stomach cancer.
This case was checked and... not confirmed. Well, that is, people would like to believe it, but no.
In fact, this story began with antediluvian histamine receptor blockers like ranitidine or even cimetidine. They also reduce the amount of acid in the stomach. So the absence of acid in the stomach due to any drugs did not lead to the development of cancer.
A completely desperate people tried to find at least something that could discredit the bright name of omeprazole, and accusations of provoking atrophic gastritis were used. Everyone knows that atrophic gastritis can end badly.
So, in the case of omeprazole, these suspicions were dispelled. Prosecution witnesses were confused in their testimonies, and in fact, not so many facts have been confirmed.
It turned out that if atrophic gastritis developed, then it was long ago and not true, and the clinical significance of these rare episodes of gastritis could not be assessed. That is, it is completely unclear whether this business is harmful to sick people.
In impotent rage, the haters of omeprazole began to collect already complete game, attracted more and more new stories, and even agreed to the point that omeprazole can increase the level of gastrin in the blood to such an extent that it will provoke growth tumors in... this... colon. We talked about gastrin in the last thread on how to get off omeprazole.
So in the case of the frantic levels of gastrin, which were found in people addicted to omeprazole, no cancer grew even after 10 years of unrestrained drinking of the drug.
In short, you can not expect cancer from omeprazole.