Chaga, or Inonotus obliquus, is a type of mushroom that grows mainly on birch trees in cold climate areas such as North America, Russia and Northern Europe. It has long been used in traditional medicine, particularly in Russian and Siberian folk medicine, for its supposed health benefits. Chaga is known for its high content of biologically active compounds, including antioxidants such as polysaccharides and phenolic compounds.
Chaga has been explored for its potential immunomodulatory and anti-inflammatory properties. It has also become popular as a dietary supplement, often prepared as an infusion or extract. Despite ongoing research, it's important to note that chaga is not a substitute for medical treatment.