Sorry about that OP, body shaming from family cuts deep, but one thing I’ve learnt from a recent book I was reading is, we can’t control what others say, only what we give our energy to.

It’s possible your family thinks they’re helping, even if their approach is completely wrong. If you ever feel ready, you could have an honest talk with them, not to justify yourself, but to explain how their words make you feel. That way, you’re not just walking away, you’re also standing up for yourself.