Originally Posted by
krispy87 
It's so frustrating to not be supported and to be judged in such a negative way when it is my life, my decision, my body. And most importantly: they are not me.
I suggest telling him what you told us here. I might add something like, "Thanks for you opinion on it. I'd don't want to talk about it any more."
If he's a real friend, he'll drop it.
It's very common for us to have to change friends when getting sober.