This is a repost from a Twitter feed with some elaboration here. The IARC report on meat and cancer should be viewed as factitious science. Here, in the USA, the National Institute of Health maintains a TOXNET website, which inter alia houses the Carcinogenic Potency Database. That database shows the relationship between dose-response and cancer. Acrylamide, one of the named chemical mutagens, has less carcinogenic potency that toast or mustard. Nitrates and nitrites are similarly shown.
and my response to an American Jnl. of Epidemiology story about chilis (chiles, chillis) causing cancer is here: