I’ve been taking high doses long term for over a decade and I don’t really have any substantial issues.

Definitely not a good idea to be on it longer than 2 months. If we can't treat the underlying condition and the patient needs life-long acid suppression therapy, we switch to H2 receptor antagonists, like cimetidine.

Long term PPI use has non-trivial risks, including magnesium and other micronutrient deficiencies, and can lead to things like SIBO and other primarily gut related morbidity.

I would definitely suggest sitting down with your doctor if you were not specifically instructed to take it for that long.

The primary concern is reduced stomach acid leading to nutrient deficiencies, particularly b12. There have been some long term studies correlating to dementia as a result. And some studies that have not found this. So the jury is still out, but keeping an eye on some nutritional markers is not a bad idea.

Good for you, but this mere fact does not mean it’s ideal.

Not a doctor, but I would at least try to look into this. Best of luck!