From Name: From Email: To Name: To Email: Optional Message: Medicinal herb linked to endemic nephropathy and cancer from Medscape Medical News An endemic nephropathy found in Eastern European farming communities appears to be caused by environmental exposure to the human carcinogen aristolochic acid, a major component of an herb used in Chinese medicine, according to a study published online in Kidney International. more 7701 Las Colinas Blvd., Ste. 800, Irving, TX 75063