Is black tongue a symptom of death?

First of all to see whether to eat black food, such as black rice, black noodles, etc., or take antibiotics caused by drugs, exclude these external factors, it may be the body shows congestion, cold and damp block caused by the tongue black, need to combine the actual situation of the patient, with blood circulation, cold and dampness of traditional Chinese medicine conditioning, can achieve better results. At ordinary times, proper exercise can improve blood circulation, promote metabolism, and continuously improve one's immunity, so it can alleviate the patient's condition.