What’s a Group 1 carcinogen?

Stuff has a (mostly reasonable) story on alcohol and cancer, quoting Prof Doug Sellman “The ethanol in alcohol is a group one carcinogen, like asbestos,”  Many of the readers of this story won’t know what a “group one carcinogen” is.  Given the context, a reader might well assume that “group one carcinogens” are those that … Continue reading What’s a Group 1 carcinogen?