Well, Johnny, you got the right attidtude. Don’t let them doctors talk you into an early grave. I believe very much in God’s natural substances and imo, he will bless you if you do as well.
I'm not sure that there is an 'un-natural' substance out there. It all came from God, one way or another, and I don't believe I have to participate in some food fetish for my body to heal. Lots of conflicting food fetishes out there, and now is not the time to experiment.
I'll stick with what works for me and feedback from the MDs. It is a GoodThing(tm) that I'm gaining weight and keeping it on. At least with feedback from the docs, I know the weight gain isn't tumor weight gain. ;)
/johnny