I find this question ironic, considering it came from someone using the moniker MooCows.
I think it is not the fatness of people which grosses you out. I think it is seeing people live and survive something your parents worked hard to keep from you.
I applaud them that they cared about your health and appearance, but it seems they went about it in an overboard fashion and left you with some personal hurdles to face.
Nobody wants to be overweight, but the battle is different for everyone. The ones who can’t slim down, and those who do but rebound have to find a happy place where they can accept themselves and be okay with who they are.
Try to embrace the fat persons for the brave way they face each day. Try to accept that they aren’t flaunting Pop Tart fat in your face, and that they just are who they are.