Why can’t people just eat less, eat less food, get on a basic exert routine.
I took care of old people my whole career. The ones who make it into their 90s were thin, or fit, didn’t depend on pharmaceutical
Had discipline.
A lot of people can go on diets and exercise and still not lose weight.
“Why can’t people just eat less, eat less food, get on a basic exert routine.”
That’s what my grandmother did every day when she was middle-aged. She went to the gym and worked out. Or sometimes went on long bicycle rides. She said virtually all of the housewives worked out and took long bicycle rides, which is why her generation had neither an obesity problem nor a diabetes problem. But then starting in the late 1980s (more my mom’s generation at that point) the housewives just stopped, all at once, simply refused to do all that extra exercise...and thus got fat and sick, but still never gave a thought to going back to all that daily exercise - they just simply REFUSE! So it’s their fault.
There's a lot of evidence you are right. Elderly grossly overweight people are rare--probably for a lot of good reasons.
Zig Ziglar used to advise people to ask their slender doctor for weight loss advice. And if their doctor is actually fat, get a new doctor fast.
His doctor said in his office: "With my diet you will be happy to learn you can eat everything you want." Then he pulled out a sheet from his desk. "This is a list of everything you're going to want to eat."