Chaga is an irregularly shaped mushroom that commonly grows in northern regions on birch, alder and beech trees. it is not cultivated but wild crafted. \n\nit has been used for centuries in russia as a cancer cure, often stomach and lung cancer, as well as for common stomach ailments such as gastritis, ulcers and general pain. water decoctions have even been used in colonics for lower bowel problems. scientific research regarding the effects of chaga have centered around its common folk uses. chaga is used as a health-improving and antiinflammat.