Link to study: American Academy of Neurology
After adjusting for factors such as age, sex and race, as well as health-related factors such as high blood pressure and diabetes, researchers found people who had been taking acid reflux drugs for more than 4.4 years had a 33% higher risk of developing dementia than people who never took the drugs.
“A buzzy new study on heartburn meds and dementia doesn’t actually clarify anything”
https://www.vox.com/health/2023/8/10/23827408/dementia-heartburn-proton-pump-inhibitors-ppi-prilosec
“Importantly, the study comes on the heels of several larger, higher-quality studies showing the exact opposite of its conclusions — namely, that these medications do not portend an increased risk of dementia.”