Scientifically studied properties include: adaptogenic, cholesterol-lowering, anti-inflammatory, antioxidant, antiviral, anti-cancer, hepatoprotective, immunomodulator, nervine and cardioprotective.
Most modern research into Reishi focuses on its anti-cancer and anti-tumor properties. Reishi contains triterpenoid compounds, polysaccharides (complex carbohydrates) and other compounds that may bolster the immune system by improving lymphocyte count and natural killer cell activity. (Natural killer cells are white blood cells that kill tumor and virus-infected cells while promoting healthy cell growth and gene expression.)
Additionally, research suggests that the natural compounds in Reishi may improve the efficacy of some forms of chemotherapy by damaging the DNA of cancer cells, making them more sensitive to pharmaceutical therapies.
Reishi is generally safe for most people, but some may experience minor side effects, including gastrointestinal distress, dry/itchy throat, nose and mouth, nosebleeds, rash and insomnia. More severe side effects may include liver injury.
If you are currently taking any medications, especially immunosuppressants, blood thinners and medications for blood pressure and blood clots, consult with a doctor before taking Reishi, as there is a risk of drug interaction. Individuals who are scheduled to have surgery or recently underwent surgery, people with bleeding disorders and those who are pregnant or breastfeeding should avoid Reishi.