Health and nutrition guidelines should cease recommending low-fat diets for weight loss in view of the clear absence of long-term efficacy when compared with other, similar intensity dietary interventions.Sadly, I'll bet it all boils down to total caloric intake. Whether people's intake is more or less than what they utilize to stay warm and keep moving.
We in the developed world have bodies that evolved to help us work hard and survive almost yearly famines while withstanding cold winters. We now live in an era of inexpensive food superabundance, and we have warm buildings, cars, and clothes.
Our shared genetic legacy turns out to be wrong for current conditions. Be patient, conditions will change.