For decades, even centuries, we have believed that dieting includes a few simple rules: lose the sugars, don’t eat highly-processed foods, don’t eat saturated fats, cut down the carbs, up the protein, eat as much of fruits and vegetables as you can, etc. However, these few principles don’t work so well for everyone. Ever wondered why? Well, the one-size-fits-all diets have one crucial flaw – not all of us are the same. But what can we do then?