CATEGORY: BRAIN & MENTAL HEALTH
A short, intensive course of magnetic brain stimulation helped more people recover from stubborn depression than a convincing fake version of the same treatment, according to a randomized trial published in JAMA Psychiatry. Among 100 adults whose depression had not improved after multiple standard treatments, about a third of those given the real stimulation reached remission—roughly twice the share seen in the comparison group.1 Because people were randomly assigned to real or sham treatment, the study can point more directly at the treatment itself than an ordinary observational study could.
52% Responded Versus 22% With Sham Treatment
The participants all had treatment-resistant depression—depression that has persisted despite trying several accepted therapies. After the treatment course, 52% of people who received the real stimulation responded, meaning their depression scores fell by at least half, compared with 22% of those who received a sham. And 34% reached remission, meaning their symptoms dropped into the range considered essentially free of depression, versus 16% with the sham.1 In a group of people who had already run out of good options, that is a substantial difference.
Magnetic Pulses Through the Scalp, No Surgery Needed
The approach is a form of transcranial magnetic stimulation, or TMS—a technique that sends focused magnetic pulses through the scalp to gently stir activity in a region near the front of the brain that helps regulate mood. It requires no surgery and no anesthesia; the person sits awake in a chair. Scalp pain was more common with the real stimulation than the sham, reported by 17.4% versus 4.4%.1 The version tested here is “accelerated,” meaning the sessions are packed together rather than spread over many weeks, so a full course can be delivered in a fraction of the usual time.
45 Sessions Over 15 Weekdays, Triple-Blinded Design
The trial, run at a single center in São Paulo, Brazil, gave each of the 100 participants 45 sessions over 15 weekdays—three sessions a day, spaced about half an hour apart. It was triple-blinded, meaning the patients, the staff delivering the sessions, and the researchers assessing results all did not know who was getting the real stimulation and who was getting the sham, which guards against wishful thinking coloring the outcome. Depression was measured with a standard symptom rating scale, and the main comparison was made five weeks after treatment began.
One Center, 100 People, No Brain Scan Targeting
This was a single-center trial of 100 people, so larger studies in more places will be needed to confirm how well the results hold up and how long the benefit lasts. It also used a practical, lower-cost way of aiming the pulses rather than individual brain scans. Even so, a randomized comparison showing that a two-week course roughly doubled remission in people with hard-to-treat depression is an encouraging signal for a condition that can be difficult to move.
15 Pooled Trials, 77% More Likely to Reach Remission
That result lines up with a 2026 review that pooled 15 randomized sham-controlled trials of accelerated theta-burst stimulation in 704 adults with depression. Across those trials, people given real stimulation were about twice as likely to respond and roughly 77% more likely to reach remission than those given sham, and effects were larger in trials that aimed the pulses using brain-scan-guided targeting.2
Key Takeaways
- In a randomized trial of 100 adults with treatment-resistant depression, about 34% reached remission after an accelerated two-week course of magnetic brain stimulation, compared with about 16% given a sham treatment.
- Just over half of those treated responded—a drop of at least 50% in symptoms—versus about a fifth in the sham group.
- It was a single-center study of 100 people using a practical targeting method; larger trials would test how durable and widely applicable the benefit is.
References
- Ramos MRF, Goerigk S, Aparecida da Silva V, et al. Accelerated Theta-Burst Stimulation for Treatment-Resistant Depression: A Randomized Clinical Trial. JAMA Psychiatry. 2025;82(5):442–450. link
- Santos JM, Yamamoto BR, Damiano RF, et al. Accelerated intermittent theta-burst stimulation for major depressive episodes: systematic review and dose-response meta-analysis. Brain Stimulation. 2026;19(5):103174. link.