The hazards of barbecue: 1. It can lead to a high incidence of cancer because barbecue is rich in carcinogenic substances such as benzo(a)pyrene and heterocyclic amines, which can increase the incidence of liver cancer, esophageal cancer, stomach cancer, pancreatic cancer, colorectal cancer, etc. 2. 3, easy to cause increased burden on the kidneys, because the protein in the barbecue, the salt in the condiments will increase the metabolic burden on the kidneys, which will lead to the high incidence of kidney dysfunction.