Why can some people eat whatever they want while others struggle with every gram? The answer is often found in the genes for appetite control, fat storage and energy conversion. Genetics explains about 40-70% of the differences in body weight.
Genes like FTO (the "fat mass gene") influence our feelings of hunger and satiety. Certain variants lead to a lower feeling of satiety, so that those affected automatically consume more calories.
The ADRB2 gene controls how effectively our body breaks down body fat during physical exertion. Knowledge about these variants helps to choose the right exercise strategy (Endurance vs. HIIT).
Genetics is not fate. Knowing your predisposition allows you to get the best out of your biology through a targeted lifestyle.