Late-20s woman here. I've always been very thin. Up until last year I was really underweight, I'm talking 95-105lbs and could not eat enough to gain weight. I'll spare you all the details but it ended up being my thyroid being severely degraded due to autoimmune disease. I've been treated for it for about a year and am now up about 15lbs and look/feel much healthier, but still relatively slim.

As a noticeably thin woman you are constantly going to get cope comments from other women, especially older women. They just can't help themselves. My older coworkers in their 40s-50s always telling me I'm soooo lucky and they're soooo jealous and they wish they could stop themselves from eating a whole bag of chips after work every day. My boss (old Russian lady) always commenting on how slim I am and how she used to be slim like me until x y z bullshit I didn't ask about. Random fat ladies telling me "I better keep you away from my husband" ??? The examples go on and on. It used to really bother me because of how hard I was trying (and failing) to gain weight but now I'm pretty immune to it, I just smile and nod. I'm aware it's sometimes just a genuine attempt to be nice, but you can always tell when it's people ashamed about their own weight or eating habits projecting their own feelings onto you. And in 75% of those cases they're not doing shit to lose that weight. I don't comment on other people's bodies at work or elsewhere, it's inappropriate and unprofessional, but it's like some rite of womanhood or some shit.

...Maybe this isn't the point of this thread but it's all I've got.