Although clinical trials have not yet been conducted in the United States, they have in other countries. There is a considerable amount of research that points to how chaga can be extremely beneficial to the human body. Here is some of the research. We encourage you to keep learning!
Lowering cholesterol, reducing risk of heart disease:
Cancer and antioxidants, triterpenes:
Link to immune system and adjunct chemotherapy: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3774877/