Life Sciences & Medicine Active Updated Aug 6, 2026
A gut microbiome fix for peanut allergy
Researchers are testing whether transplanting gut microbes from a healthy donor can dial back a peanut allergy, an alternative to the slow, daily dose-escalation of standard oral immunotherapy. The stakes are whether a single day of treatment can meaningfully and durably loosen a food allergy's grip, and a larger placebo-controlled trial in children is already underway to test how far the effect holds.
The story so far
-
Aug 6, 2026 Latest
Rima Rachid of Boston Children's Hospital led a trial in which 15 adults with peanut allergies swallowed 36 capsules of donor stool in a single day, and four months later six of them could eat far more peanut without reacting, most tolerating a whole peanut's worth of peanut flour and one tolerating four peanuts.
This story moves with the morning letter.
When this arc advances, the timeline above grows the same morning. One short, warm letter with the day's real progress in science, medicine and beyond. Free, every day.
Free forever, no spam. One click to unsubscribe, and we never sell your email.