I am one of those "Skinny People " you seem to resent and despise, brought up with obese women all my life, so I don't know how they felt, I can understand the problem from another point of view ( and NO we don't all point and laugh).
Yes, family HAS to get onboard, tell me would you buy heroin for a drug addict, or a case of beer for an alcoholic ? I doubt it, so why be expected to give an obese person say a bag of chips, instead of offering a salad ? It is quantity and the quality of the food that counts, I honestly don't think the other poster was suggesting a starvation regeime.
Help them get motivated by going out with them, I'm NEVER ashamed to be seen with my Mother or my aunt, and those who do stare, well that's their problem. I remember an incident at the Mall one day when a rude a-hole commented about my Mother,
" Boy, is that woman FAT" he said, to which I replied, " yeah, but you're ugly as sin, and at least she could diet. " So yeah, I have heard the comments, and you know what when you are told all your life you look "just like your Mom " it does distort your own relationship with food, and your own body image, so like any other addict, it is NOTjust YOUR problem, it is a FAMILY issue, starvation and isolation are NOT the answer, but we do NOT have to feed it or enable it either.