There recently was a study done that linked drinking tea while too hot may lead to esophageal cancer if you also smoke or drink alcohol. Also acid reflux can play a part in this. This study was printed in the Annals of Internal Medicine.
According to the International Agency for Research on Cancer, a part of the World Health Organization, this cancer is the eighth most common cancer worldwide. There is low survival rate for this cancer. Approximately 400,000 do not survive this cancer annually.
So to conclude, let your tea (or coffee) cool down before drinking it. Or switch to iced tea or cold brew!