During a median 10 years’ follow-up, 37% of participants died. There were 46 excess deaths per 1000 PPI users in that time. PPIs were associated with excess mortality from cardiovascular disease (CVD) and chronic kidney disease (CKD). Patients without indications for PPI use had higher mortality risk from CVD, CKD, and also upper gastrointestinal cancer. Longer duration of use was associated with greater risk.
The NEJM Journal Watch summary has a link to the full study from BMJ.