Fasting's hidden effects on the brain revealed in new study
NCT ID NCT07178106
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study looked at how a week of low-calorie fasting affects both the body and brain in 12 healthy adults. Participants followed a structured fasting plan, and researchers used brain scans and blood tests to track changes. The goal was to understand the link between switching the body's fuel source from sugar to fat and how the brain responds.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- low-calorie fasting (Wilhelmi-Buchinger method)
- What this could lead to
- If successful, this could help explain how fasting affects the brain, potentially pointing toward new ways to support mental or metabolic health.
- What could go wrong
- This is a very small, early study in healthy people, so results may not apply to others. It only measures biological changes, not health outcomes.
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
-
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
-
12 people
The number who actually took part.
- Started
-
Oct 2024
- Finished
-
Nov 2024
- Lead sponsor
-
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
-
18 to 40 years
- Sex
-
Anyone
- Healthy volunteers
-
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: * Normal weight at study inclusion (BMI 18.5-25) * Generally good physical condition without serious previous illnesses * For female participants, only participants taking hormonal contraception are included Exclusion Criteria: * MRI contraindication: cardiac pacemakers, hearing aids, neurostimulation, insulin pumps, other potentially ferromagnetic implants, screws, clips, prostheses, metal splinters, etc., pregnancy, claustrophobia, extensive tattoos, medication that impairs thermoregulation * Comorbidity: neurological or psychiatric conditions, cognitive impairments, chronic somatic disorders * Intake of more than 40g of pure alcohol (for men) or more than 20g of pure alcohol (for women), smoking, regular drug use * Pregnancy or nursing * Current or within the past five years eating disorder, vegan diet or fasting within the past six months * Regular medication intake
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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
-
Department of Psychiatry and Psychotherapy, University Hospital Jena
Jena, Thuringia, 07743, Germany
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