National Institute On Aging (nia)

This study is testing whether a natural supplement called Urolithin A can help the body manage blood sugar better as people age. Researchers will enroll 180 healthy adults aged 55 and older to take either the supplement or a placebo for 8 weeks. They'll measure how the body respo…

This study aims to develop and refine MRI scanning techniques for future aging research. Researchers will scan 1,000 healthy adults and people with aging-related conditions to test new scanning procedures. No treatments are provided - this is purely about improving research metho…

This study aims to understand how the cells in our bone marrow that produce blood cells change as we get older. Researchers are recruiting 2,000 healthy adults aged 18 and over to donate a small bone marrow sample from their hip every other year. The samples will be used for lab …

This early-stage study aims to see if stem cells can be taken from tiny taste buds on the tongue, grown in a lab, and turned into cells that produce insulin. Researchers will enroll 250 healthy adults to collect small tongue tissue samples and study how these cells change with ag…

This study aims to find the genetic causes of dementia and movement disorders by analyzing DNA from thousands of people. Researchers are enrolling patients with these conditions, their family members, and healthy volunteers to provide blood or saliva samples. The goal is to ident…

This long-running study aims to understand the normal aging process by following healthy adults over their entire lives. Participants, who must be at least 20 years old and in good health, undergo comprehensive multi-day check-ups every few years. The goal is to gather detailed i…

This study aims to understand how the brain changes as children go through puberty. Researchers will enroll 80 healthy children aged 9 to 14. They will use MRI brain scans and physical exams to measure brain structure and link it to stages of puberty, but this is not a treatment …

This study collects tissue samples like blood, saliva, and skin from volunteers to help scientists learn more about diseases and develop better research tools. It involves both healthy people and those with specific medical conditions. The information is used for research only an…

This study aims to understand how the body's natural process of breaking down and rebuilding proteins changes as we age. Researchers will enroll 75 healthy adults over age 20. Participants will drink safe, labeled water for three weeks and provide small tissue samples to measure …

This study aims to understand how a protein called amyloid builds up in the brain as people age and whether this buildup is linked to memory loss or other thinking problems. Researchers will follow 400 adults aged 55 and older who are already part of a long-term aging study, perf…

This study aims to collect white blood cells from healthy volunteers to supply researchers studying the immune system and aging. Up to 10,000 participants will donate cells using a safe machine that separates and returns most of their blood. The goal is to provide high-quality ce…

This study aims to understand the biological process of aging by tracking changes in blood, tissue, and body function over many years. It will enroll 900 adults, including healthy individuals, those with some health issues, and frail individuals, to compare how they age different…