The low-fat diet did not make Americans healthier. It made them sicker.
When fat was removed from processed food it was replaced with sugar and refined carbohydrates. Fat is the direct precursor to every steroid hormone in your body.
Chronically low fat diets suppress testosterone, disrupt menstrual cycles, impair brain function, and create the hormonal environment that drives weight gain.
Fat was never the problem. The problem was always what replaced it.