Do Reishi Mushrooms Really Treat Cancer?

TL;DR

Reishi mushrooms show promising anti-cancer effects in lab and animal studies, but clinical trials in humans remain too few and inconsistent to confirm they treat cancer.

Key Points

• 1.Reishi (Ganoderma lucidum) has strong pre-clinical anti-cancer evidence in mice. In a colon cancer mouse study, G. lucidum extract significantly reduced tumor size and number, and improved survival rates with fewer symptoms like weight loss and diarrhea.
• 2.The mushroom kills human cancer cells in vitro without harming healthy cells. In dish-based studies, G. lucidum extract triggered apoptosis (programmed cell death) in human colon and breast cancer cells dose-dependently, while leaving normal cells unharmed.
• 3.Reishi can boost cancer-fighting immune activity and enhance chemotherapy. It raises CD8+ T cells, natural killer cells, and reactive oxygen species; in ovarian cancer mice, combining it with cisplatin produced higher cancer cell death than either treatment alone.
• 4.Clinical trials in humans are few, old, and produce mixed results. A 2003 study of 30 advanced cancer patients (Ganopoly) showed some increased natural killer cells but inconsistent immune signals; a colorectal tumor study found tumor reduction in only about half the treatment group.
• 5.The current scientific consensus is to use Reishi as a supplement alongside, not instead of, standard cancer treatments. Researchers do not recommend replacing chemotherapy or radiation with mushrooms, but doctor-approved supplementation may enhance treatment effectiveness.