Common diabetes drug tested to stop Alzheimer's before it starts

NCT ID NCT04098666

First seen Apr 09, 2026 · Last updated May 13, 2026 · Updated 7 times

Summary

This study tests whether metformin, a common diabetes medication, can prevent Alzheimer's dementia in people with mild cognitive impairment. About 326 overweight adults aged 55-90 without diabetes will take either metformin or a placebo for 18 months. Researchers will track memory, brain scans, and blood markers to see if the drug slows cognitive decline.

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Contacts and locations

Locations

  • Boston University

    Boston, Massachusetts, 02118, United States

  • Columbia University Medical Center

    New York, New York, 10032, United States

  • Cornell University

    New York, New York, 10065, United States

  • Eastern Virginia Medical School

    Norfolk, Virginia, 23507, United States

  • Emory University

    Atlanta, Georgia, 30329, United States

  • Georgetown University

    Washington D.C., District of Columbia, 20007, United States

  • Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226, United States

  • New York University Langone Medical Center

    New York, New York, 10016, United States

  • Pennington Biomedical Research Center

    Baton Rouge, Louisiana, 70808, United States

  • Rush University Medical Center

    Chicago, Illinois, 60612, United States

  • SUNY Upstate Medical University

    Syracuse, New York, 13210, United States

  • Stanford University

    Palo Alto, California, 94304, United States

  • The University of Texas Health Science Center San Antonio

    San Antonio, Texas, 78229, United States

  • University at Buffalo

    Buffalo, New York, 14203, United States

  • University of California - Irvine

    Irvine, California, 92697, United States

  • University of Cincinnati

    Cincinnati, Ohio, 45267, United States

  • University of Kansas Medical Center

    Wichita, Kansas, 67214, United States

  • University of Miami

    Miami, Florida, 33136, United States

  • University of New Mexico

    Albuquerque, New Mexico, 87106, United States

  • University of Texas - Southwestern Medical Center

    Dallas, Texas, 75390, United States

  • University of Washington

    Seattle, Washington, 98104, United States

  • Wake Forest University Health Sciences

    Winston-Salem, North Carolina, 27157, United States

Conditions

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