Hormone therapy may reshape brain function, new study shows
NCT ID NCT07624747
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how starting gender-affirming hormone therapy (GAHT) changes the brain over the first few months. Researchers will measure blood flow, brain structure, and thinking skills like memory and attention in 72 adults before and 4-6 months after starting GAHT. The goal is to understand the brain's response to hormone therapy, not to treat a disease.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 72 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Apr 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Adults (18-45 years) undergoing gender affirming hormone therapy with their clinical health care team.
- Ages
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18 to 45 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * intention to undergo GAHT Exclusion Criteria: * BMI greater than 40 kg/m2 * Age greater than 45 yrs * Blood pressure greater than 140/90 (stage II hypertension) * A current diagnosis of type II diabetes * History of traumatic brain injury/concussion, stroke, or seizures * Are post-menopausal * Previously taken hormone therapy medications * Self-reported pregnancy (no pregnancy test)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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UW School of Medicine and Public Health
RECRUITINGMadison, Wisconsin, 53792, United States
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