Obesity is so multi faceted, there is no one fix.
Yes of course, how much and what we eat is a key factor. And exercise plays almost no role at all in weight loss. It's great for health of course. But to lose weight? No.
But so are hormones. Any woman in or past the menopause will tell you, they can practically fast and the weight won't come off. I've experienced this. With GP support.
Hormones change for a period after weight loss surgery (got this from the horses mouth, from one of the UK's leading weight loss surgeons) and this is what makes weight loss surgery work. It's also why the effect of the surgery wears off after a few months, despite still having a hugely reduced stomach size.
Insulin resistance. Makes losing weight very very hard, regardless of calorie intake. Another reason that WLI work. Because they're designed for diabetics. It isn't just about the appetite suppression.
When losing weight, the body is designed to try to cling onto the weight. Losing just 3 percent of your body weight can result in a 17 percent slowdown in your
metabolism – a body-wide starvation response that blasts you with hunger hormones and drops your internal temperature until you rise back to your highest weight.
So no one is saying that eating junk food, drinking fizzy drinks loaded with sugar, high fat, high fat and crappy food isn't too blame. But it isn't the whole picture. ~
And people that have never been obese aren't experts. All this calories in, calories out crap is just that.
If you talk to a REAL expert, they know this.