Reishi has also been investigated for its potential anticancer effects. 7,8 A small study did not find any benefit of reishi spore powder for treating patients with Alzheimer’s disease. 6 However, randomized controlled trials do not support the use of reishi to mitigate cardiovascular risk factors associated with type 2 diabetes. Clinical findings suggest its benefits in improving lower urinary tract symptoms in men, 5 exerting mild antidiabetic effects, and improving dyslipidemia. Reishi extracts demonstrate immunomodulatory, 1 renoprotective, 2 anti-inflammatory, 3 and hepatoprotective 4 effects. Pharmacologic studies have revealed beta-glucan polysaccharides and triterpenes to be the bioactive compounds in reishi mushroom. However, there is no evidence of its efficacy as a first-line cancer treatment or to prolong long-term survival. Reishi is sold in the form of powders, capsules, tinctures, and teas, all of which are produced from the mycelia, spores, or fruiting bodies.Ĭurrent data from small studies suggest that reishi improves immune response in patients with cancer. It is also widely recommended by herbalists to boost the immune system. Reishi has become popular over the past few decades and is used to treat coronary artery disease, arthritis, hepatitis, hypertension, AIDS, and cancer. It is used to increase energy, stimulate the immune system, and promote health. Rockefeller Chair in Integrative Medicine and Chief, Integrative Medicine Service, Memorial Sloan Kettering Cancer Center, New York.Ĭommon Names: Ling zhi, lin zi, mushroom of immortalityĪ fungus,reishi mushroom is an important component of the traditional medical systems of China, Japan, Korea, and other Asian countries.

Integrative Oncology is guest edited by Jun J.

Red reishi mushroom side effects