There is no data or report that barbecue will definitely cause cancer. Primitive people barbecue food with fire, which is also beneficial to a great extent: eating cooked meat is conducive to ingesting more nutrients and improving physical fitness; Treating food at high temperature also removes many harmful substances contained in meat.
No one has investigated whether the death of ancient people was caused by cancer, and it is impossible to determine whether it was related to barbecue. Generally speaking, the barbecue cooking of ancient people is the progress of human society. Otherwise, human beings have been eating raw food until now, which is unimaginable.
The theory of barbecue carcinogenesis generally refers to that barbecue carbon produces toxic and harmful substances in high temperature environment; It is harmful to roast food until it is burnt; The seasoning used may be unhealthy; Factors such as long-term high-fat diet.
It is precisely because of the awareness of these problems that modern people began to introduce baking trays, electric roasting and blowing away barbecue smoke with large fans; And abandon burnt food; Seasoning no longer pursues heavy taste and begins to say no to pickled food; Advocate a light diet and so on.
Barbecues that don't pay attention to quality do have unfavorable factors to induce cancer. But it is by no means the only cause of cancer. Regardless of ancient and modern times, barbecue diet is only a possible inducing factor of cancer, not a sufficient factor.
People who have been keen on barbecue all their lives may not get cancer when they are old, but die in a car accident with crutches.