A lot of points have been made that are facts, I'll just say that the whole "fat shaming" AND slut shaming, body positivity wave has further compounded the issue. Western world in general is getting fatter each decade due to unhealthy food + sedentary lifestyle most live. The thing is you can somewhat get away with eating junk and still being fit if you kill it in the gym and actually make effort to move around regularly. However, most people today don't exercise regularly AND are in and out of popeyes, McDs, five guys etc and consume other processed food daily.
So you have a group of folk that were naturally "curvy" then fast food options became more readily available, bm started tolerating it more on some 'well she may have a gut but she GOT ASS!' mentality which trickled down to women caring less and less about their midsection, arms, face.
NOW you got dudes trying to put the brakes on it like hold up now yallstarting to look like Warren Sapp out here
but it's pretty much too late cause as I stated earlier there's a whole movement of no fat shaming, body positivity aka let's just embrace obesity cause we're too lazy to workout and undisciplined to put the fried chicken down.