Alzheimer disease (AD)

This study tests whether a drug made from Ginkgo Biloba extract (Egb761) can lower a key Alzheimer's protein in the blood and improve thinking skills. Fifty adults with mild memory problems will take the drug twice daily for 6 months. The goal is to see if it can reduce brain dis…

This study is developing a web-based app that analyzes how you speak and remember things to quickly detect early cognitive problems like dementia or Alzheimer's. Researchers will enroll 500 people (healthy adults over 45 and those already diagnosed with mild cognitive impairment …

Researchers are sequencing the gut microbiomes of people with a wide range of conditions, from autism and Alzheimer's to Crohn's disease and multiple sclerosis, to see whether bacterial patterns differ by disease. The study also enrolls healthy participants for comparison. By mat…

The ALOHA study is a community-based research project for adults aged 50 and older in the Washington, D.C., Maryland, and Virginia area. Over five years, participants receive annual health assessments—including physical and cognitive tests—and get a personalized 'Health Passport'…

This study is testing whether simple blood tests can accurately diagnose dementia in everyday clinic settings. Over 3,000 people aged 45 and older with memory problems will give blood samples and answer questionnaires. Researchers will check how reliable and acceptable these bloo…