It hasn't been proved? Or do you mean it hasn't been accepted by the health industry whose #1 motive, always, is to
medicate you?
Calories.
Are.
Not.
Created.
Equally. <-- there are five articles you can click on to whet your whistle with with hundreds more available.
If we would eat real, nutrient dense whole foods [which means would be eliminating added sugars / HFCS] we'd pretty much never "over eat" or have to think about calories again. The source of calories consumed is exponentially more important than any calorie count.
Imagine 750 calories worth of spinach and tomatoes and mushrooms and carrots in a glorious soup or salad. Now picture that Big Mac w/ SMALL fries and a "diet" soda which is also equal to about 750 calories. Which dinner is better for your body? Which food satisfies your nutritional needs? Which meal would your body most effectively burn as fuel?
It's time to let go of the "health advice" from decades past. If it were accurate, and true, obesity would have been eradicated long ago; instead the obesity rate has steadily climbed over the past 50 years. The advice didn't help Eisenhower in the 1950's and it's not helping anyone today.
Challenge the status quo. Be open and receptive to changing schools of thought - especially when the same-old-same-old is failing everyone miserably! We don't treat cancer or mental health issues with old and outdated treatments. Why embrace antiquated food / diet guidelines?
<3