Observational · 2026
Brain scans after magnesium-ibogaine treatment in 30 veterans with blast brain injury
- Original title
- Increased cortical thickness and decreased brain age among special operations veterans with blast TBI after a magnesium-ibogaine protocol.
- Authors
- Geoly AD, Coetzee JP, Buchanan DM, et al.
- Journal
- iScience, 2026
- Molecules
- Ibogaine
- Conditions
- Other
- Participants
- 30
- Evidence grade
- Low
- Source
- Read the original paper
The question
Does a magnesium-ibogaine protocol change the structure of the brain in veterans who have had blast-related traumatic brain injury?
What they did
Thirty Special Operations Forces veterans with a history of blast-induced traumatic brain injury took part in an observational study. All received ibogaine, a psychoactive plant alkaloid, given together with magnesium. Structural MRI brain scans were taken at baseline (25 scans), shortly after treatment (25 scans), and one month later (22 scans). The researchers measured cortical thickness (the depth of the brain’s outer layer), the volume of deeper brain structures, and a computer-estimated “brain age” based on the scans.
What they found
Predicted brain age was significantly lower one month after treatment than at baseline, by 1.3 years. Cortical thickness increased in 11 brain regions after treatment. Eight deeper brain structures showed significant increases in volume. The authors describe the overall pattern as consistent with neuroplastic change, meaning the brain adapting or reorganizing.
The fine print
There was no control or comparison group and no placebo, so the changes cannot be attributed to ibogaine with confidence. The sample was small, self-selected and highly specific (male-dominated special operations veterans is not stated, but the group is narrow), follow-up was only one month, and not everyone completed every scan. The outcomes are brain-imaging measures, not symptoms or daily functioning, and the authors note the scan type used is sensitive to non-structural changes such as fluid shifts. This summary is based on the abstract alone.
What it means
In a small uncontrolled group of veterans, brain scans changed in the month after a magnesium-ibogaine protocol, but without a comparison group it is not possible to say the treatment caused those changes or that they mean better health.
Evidence grade: Low. Small observational study with no control group or placebo, and brain-scan measures rather than clinical outcomes.
This summary is based on the study’s published abstract.