For what it’s worth, the classification “category 1” carcinogen does not indicate severity or level of risk. Everything that is carcinogenic is in category 1. If something is “maybe carcinogenic, unsure”, it’s category 2. Plutonium is in category 1, but so are alcoholic beverages and birth control pills.
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For what it’s worth, the classification “category 1” carcinogen does not indicate severity or level of risk. Everything that is carcinogenic is in category 1. If something is “maybe carcinogenic, unsure”, it’s category 2. Plutonium is in category 1, but so are alcoholic beverages and birth control pills.
You forgot to mention that group 2 is split into two categories
Group 2: 2A: cancer probable and 2B cancer possibly.
Group 3: not enough evidence.
Group 4: no evidence.