A new study suggests that a simple amino acid found in foods like meat, eggs, and cheese could help the gut recover after cancer therapy. Researchers discovered that cysteine, a sulfur-containing amino acid, supports the repair of intestinal cells damaged by chemotherapy and radiation.
In animal studies, diets rich in cysteine helped regenerate stem cells in the small intestine — an area often harmed during treatment. The amino acid appeared to trigger immune responses that aided tissue repair and improved overall gut health. While more research is needed in humans, scientists say cysteine’s natural presence in nutrient-dense foods makes it a promising, food-based approach to healing.
Cysteine is abundant in animal proteins such as beef, lamb, eggs, and dairy. These foods provide key building blocks for tissue repair, hormone balance, and metabolism. Experts believe boosting cysteine intake through diet or supplements could help protect the gut and speed recovery after cancer treatment. A balanced diet with high-quality protein, healthy fats, and well-cooked vegetables remains one of the best ways to support natural healing.
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