Hypervigilence is difficult for anyone who has lived through an extensive period of trauma. If you are HWP, then it makes no sense that people should comment on your weight or appearance. If those are friendships you value, I would discuss how that made you feel. If they are not, I'd not give much weight to the comments, and maybe revisit whether you need that person in your life.
But remember, you are the only one who can take the comment and turn it into a judgment. Don't give people that power over you. Take any needed criticism that comes your way, and reject that which is clearly inapplicable or mean-spirited.
Yes, blows hurt when they land. That's why it's always good to cogitate and vent, so you can respond rather than react. Time helps that.