Can patients with rectal cancer eat mushrooms?

Nov 14, 2025 Source: Cainiu Health
Dr. Huang Yuhong
Introduction
If a patient with rectal cancer is in a stable phase of the disease, not receiving treatments that may affect digestion, has normal bowel function, and experiences no discomfort such as abdominal pain, bloating, or diarrhea, and has no history of mushroom allergy, they may consume moderate amounts of well-cooked, soft mushrooms, such as stewed mushrooms or stir-fried mushrooms (with minimal oil). Mushrooms contain vitamins, dietary fiber, and various trace elements that can help supplement nutrition, but only common edible varieties should be selected.

Generally, if patients with rectal cancer have normal digestive function and no gastrointestinal discomfort, they may consume cooked and softened mushrooms in moderation. However, those undergoing treatment with weakened digestion, intestinal obstruction, or mushroom allergy should avoid eating mushrooms. If in doubt, it is recommended to consult a healthcare provider beforehand. Detailed analysis is as follows:

If a patient with rectal cancer is in a stable phase of the disease, not receiving treatments that may impair digestion, and has normal bowel function without symptoms such as abdominal pain, bloating, or diarrhea, and has no history of mushroom allergy, they may moderately consume well-cooked soft mushrooms—such as stewed mushrooms or lightly stir-fried mushrooms (with minimal oil). Mushrooms contain vitamins, dietary fiber, and various trace elements that help supplement nutrition. However, only common edible varieties should be selected; wild mushrooms should be avoided. Consumption should also be controlled to prevent excessive burden on the intestines.

For rectal cancer patients during treatment—such as those experiencing nausea, vomiting, or indigestion after chemotherapy, indicating reduced digestive function—or those with intestinal narrowing, obstruction, difficulty defecating, or mushroom allergy, mushroom consumption is not recommended. Raw or undercooked mushrooms are relatively tough in texture and may irritate the intestinal mucosa, worsening gastrointestinal discomfort. Allergic reactions may lead to rashes, diarrhea, or other risks, while wild mushrooms may carry a risk of poisoning.

Rectal cancer patients who choose to eat mushrooms should select fresh, edible varieties and ensure they are thoroughly cooked. After trying mushrooms, monitor for any bodily reactions. If symptoms such as bloating or abdominal pain occur, stop consumption immediately and consult a doctor to ensure dietary safety.