Drinking scalding coffee, tea, or yerba mate might increase the risk of developing esophageal cancer according to the World Health Organization (WHO). Beverages hotter than 149°F (65°C) might increase the risk of developing esophageal cancer.1
http://www.oncologynurseadvisor.com/gastrointestinal-cancer/scalding-beverages-might-lead-to-esophageal-cancer/article/506943/
Scalding Beverages Might Lead to Esophageal Cancer