My mother's side of the family often attempts to shame me for not being overweight like them. On the rare occasions I see them, I always hear "just try to live a little" and "you gotta enjoy life." But I do live and I enjoy life. I just do it in a healthier manner than they do.
They are all "Christians" yet they will quickly become offended if you remind them that gluttony is a deadly sin according to their bible.
A little bit of self respect goes a long way.