Brain stimulation for Parkinson's linked to weight gain – study investigates why
NCT ID NCT00221793
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at why people with Parkinson's disease often gain weight after deep brain stimulation of the subthalamic nucleus. Researchers measured energy use and metabolism in 20 patients before and after treatment. The goal was to understand if weight gain is due to changes in energy balance.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- deep brain stimulation
- What this could lead to
- If successful, this could help doctors understand and manage weight changes in Parkinson's patients after brain stimulation.
- What could go wrong
- This is a small, completed observational study with only 20 participants, so findings may not apply to all patients. It does not test a new treatment.
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.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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20 people
The number who actually took part.
- Start date
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Dec 2002
- Finished
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Dec 2006
- 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.
- Ages
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35 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 35 and 70; male or female; parkinson disease, with levo dopa response (at least 30%); severe but stable incapacity; no dementia, no psychosis, no depression; normal brain scanner done during the last 2 years. Exclusion Criteria: * diabetes thyroid disease pacemaker coagulation troubles previous drug abuse
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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.
Contacts and locations
Locations
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Service de neurologie Hôpital Haut-Lévêque
Pessac, 33604, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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