A clinical trial is a kind of research study performed in people and aimed at evaluating a medical, surgical, or behavioral intervention. The NIA has information about clinical trials pertinent to older people. The NIA tip sheet Clinical Trials and Older People  can help you think about why you might consider participating in a clinical trial and how your safety is protected. If you are interested in clinical trials for Alzheimer’s disease, the booklet Participating in Alzheimer's Resesearch  can help. Learn more about participating in research at NIH Clinical Research Trials and You .
If you want to participate in a clinical trial, click on the following links:
- To search for clinical trials related to all types of diseases and conditions, search www.clinicaltrials.gov. 
- To find aging-related trials and studies sponsored by NIA, click here .
- To find trials related to Alzheimer's disease and dementia, go to NIA's Alzheimer’s Disease Education and Referral (ADEAR) Center clinical trials listing . Information Specialists at the ADEAR Center can help answer your basic questions. Call 1-800-438-4380 Monday through Friday, 8:30 a.m.—5:00 p.m. Eastern Time.
- If you live in the Baltimore-Washington, DC area, you might be interested in participating in an NIA intramural study, such as the Baltimore Longitudinal Study on Aging . Call 1-800-225-2572, extension 3941 (toll-free) or email NIAStudiesRecruitment@mail.nih.gov .