It's the habits. In the 1970s - people did not have a habit of eating 3 full blown high calorie meals. They were working physically intense jobs (agriculture,

It's the habits. In the 1970s - people did not have a habit of eating 3 full blown high calorie meals. They were working physically intense jobs (agriculture, mines, metallurgy etc). Nowadays the hardest thing we do is think. They'd spent more time outdoors. They'd rather do sports and spend time in nature actively resting than binge watching tv-shows and movies on the weekends. People didn't have as much food available to them as today. They also had less commodity. Why do people regain fat they lose? It's the habits. They'll get the bariatric surgery done, but will never change the habits. They'll go through the 600 calorie liquid diet and will continue to eat the same things that made them fat initially. They'll continue binge watching tv shows on the weekends, without lifting anything heavier than their spoon or the remote. They'll continue undergoing the fad diets that don't do anything but make their metabolism slower and make their bodies over compensate due to starving. People are lazy and refuse to listen to their bodies, but will gladly listen to the brainbait titles of famous ads/instagram posts. Why we're fat? We're fat because we look for immediate gratification that sugar produces rather than the gratification of being able to climb ten floors of stairs with ease. My dad recently told me that he wants to do bariatric surgery which will "jumpstart" his weight loss. He unfortunately can't walk 200 meters right now, without getting tired. Do you think something will change if he undergoes the surgery or will he continue eating the same :) ? I bet it's the latter, since he won't have an incentive to change something.