@ZachWeinersmith
Not skin cancer from the exposure to the yellow sun which is also the source of his power?
@ZachWeinersmith fun fact - tetraethylkryptonite is an incredible knock inhibitor.
@ZachWeinersmith Note that kryptonite is canonically highly cancerogenic for humans too and between stealing forties of cakes and putting superdogs into virtual reality Lex died from kryptonite-induced cancer a few times too.