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Clinical and Neurobehavioral Changes With Weight Loss Drug Discontinuation and Reinitiation
Sponsor: The University of Texas at Dallas
Summary
The goal of this clinical study with research procedures is to learn how stopping and restarting tirzepatide (a medication that helps regulate blood sugar and appetite) affects brain activity, behavior, and health in adults ages 18-70 who are currently taking tirzepatide. Specifically, the study aims to examine how a short pause in tirzepatide affects hunger, mood, sleep, and daily functioning; how stopping and restarting tirzepatide alters brain chemistry and brain responses to food-related images; and how these changes relate to health measures such as quality of life and emotional well-being. There is no comparison group; instead, researchers will assess changes within each participant across three time points: while taking tirzepatide, after stopping it for 3-4 weeks, and after restarting it for 6-8 weeks. Participants will attend three in-person visits lasting approximately 3-4 hours each, during which they will complete interviews, questionnaires, and cognitive tasks; provide a urine sample (pregnancy screening for females); undergo a brain scan using magnetic resonance imaging (MRI) and MR spectroscopy (MRS); and receive a kit to provide a small stool sample. Participants will also complete two brief check-in phone calls between visits and the online BrainHealth Index between sessions, which includes surveys and cognitive tasks. All changes to tirzepatide use will occur under the supervision of a study physician to support participant safety and comfort, and the total study duration is approximately 13 weeks.
Official title: Clinical and Neurobehavioral Changes With GLP-1 (Glucagon-like Peptide-1) Discontinuation
Key Details
Gender
All
Age Range
18 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
40
Start Date
2026-02
Completion Date
2029-02
Last Updated
2026-02-04
Healthy Volunteers
No
Interventions
Discontinuation and Reinitiation of Tirzepatide
Participants will temporarily pause their tirzepatide medication for 3-4 weeks and then restart it for 6-8 weeks under the supervision of a study physician. The medication change is done only for research purposes to study how stopping and restarting tirzepatide affects brain activity, appetite, mood, and other health measures. During this period, participants will complete MRI scans, behavioral assessments, questionnaires, and provide stool samples across three study visits.
Locations (1)
Center for BrainHealth
Dallas, Texas, United States