MIT scientists discover amino acid that helps the gut heal itself
MIT scientists have discovered that cysteine, an amino acid found in high-protein foods, can enhance the gut's natural healing process. In studies with mice, a diet rich in cysteine activated immune cells that promote the repair of damaged intestinal tissue. This research could lead to new dietary therapies for cancer patients experiencing gut damage from treatments like radiation and chemotherapy.
- ▪Cysteine is an amino acid found in foods such as meat, dairy, beans, and nuts.
- ▪The study showed that a cysteine-rich diet activated immune cells that aid in intestinal repair.
- ▪Researchers believe this discovery could lead to dietary therapies for cancer patients suffering from treatment-related gut damage.
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Science News from research organizations MIT scientists discover amino acid that helps the gut heal itself Researchers discovered that cysteine — a nutrient found in high-protein foods — can supercharge the gut’s natural healing system. Date: May 21, 2026 Source: Massachusetts Institute of Technology Summary: MIT scientists have identified cysteine — an amino acid found in foods like meat, dairy, beans, and nuts — as a potent trigger for intestinal repair. In mice, a cysteine-rich diet activated immune cells that released healing signals, helping stem cells rebuild damaged intestinal tissue after radiation exposure. Researchers say the discovery could eventually lead to new dietary therapies for cancer patients suffering from treatment-related gut damage.
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