My belief is if you have to worry something you are doing caused your cancer, you should not do it unless you want to worry. One oncologist told me, if drinking caused your cancer, don't drink, as he chuckled and reminded me unless it is known to be from
HPV, smoking and drinking for years is the most likely cause.
As far as your other, in your state, you should be able to try such things, if you wish to deal with pain or increase appetite.
