Weirdly the exception I've found seems to be anything related to cancer. I've had so many bad experiences with medical professionals as a whole in the past. But almost every single doctor I've talked to who specializes in something related to cancer has been in the range of normal sized to outright fit. I don't think I've even seen any nurses or techs related to any of it that were fat.  It's weird. Could just be a massive coincidence or just someone involved with staffing in this area. But it was a nice surprise.