Overview
- A JAMA Psychiatry study published June 17 used a remotely controlled vibrating capsule to test gastric sensation and found measures of gut–brain signaling linked to relapse risk in people treated for anorexia nervosa.
- Researchers recruited 62 weight‑restored women and girls with anorexia and 57 healthy controls, had participants press a button when they felt stomach vibrations, and recorded brain, heart, and stomach activity with six months of follow‑up for the patient group.
- People with anorexia were worse at detecting subtle stomach sensations, more likely to report no sensation when the pill vibrated, and slower to update expectations when signals occurred, patterns that computational models tied to higher relapse rates.
- The authors propose that ingestible mechanosensory probes plus computational modeling could become scalable tools to identify patients at higher risk and to track treatment response, but they stress the need for replication in larger and more diverse samples before clinical use.
- If validated, the test could let clinicians target post‑discharge support and monitor recovery by measuring interoception—the brain’s sensing and learning about internal bodily signals—rather than relying only on weight and patient report.