I will retell this story until the day I die.
I am NOT and never HAVE been 'thin'. I have always been what my grandmother called 'solid'. I could run like a wild thing (and did) as a child. I hiked, biked, swam, went skiing... and was never smaller than a size twelve. Fourteen once puberty was over (Hello there, T/A and hips).
My parents did not let us have 'junk food'. Sure, there were chips or cookies on occasion, but not what other kids had. My roommate was stunned to hear in my house growing up, there were no frozen pizzas, or chicken nuggets, the nights my stepmom was too tired. We would order out for pizza a couple times of month, but.. it was meat/starch/veg every night, pretty much.
My sister lost a TON of weight when she had Ulcerative Colitis. She's not as 'solidly built' as I am, but she's not far off. And when she got lower than an 8, she.. it was not a good look for her.
I had a surgery that was terribly bungled, because the surgeon was a lazy fuck with the ego of some golden god. So I ended up with a surgical hernia that needed to be dealt with ASAP (once I convinced the PCP that no, it's not scar tissue, please let me have some sort of scan). The surgeon she sent me to (Not Dr. Ego Fuckhead), told me he'd seen the scan, but he wanted me to lose 50 lbs before he did the surgery. My intestines were literally trying to escape, and this asshole wanted me to go on a diet. I cried in my car, went home, and called my PCP - I was pissed. She called and read him the riot act. I got my surgery less than a month later. THIS is the part that I will never not be amazed at.
At the follow up, he APOLOGIZED for his comment about my weight. "Once you were opened up, you really are built to be this way. I'm sorry I thought you needed to lose that much weight." I was stunned, y'all.
I've always had doctors tell me I'm too big, after my pediatrician. He NEVER ONCE said I was fat, but he'd watched me grow up since I was a little mack truck of a kid. He had kids in my school, he saw me playing after school sports, riding my bike around town all the time. They can all blow it out their asses.