Most people don’t think about hormones. But when you develop resistance to your seven major metabolic hormones—cortisol, thyroid, testosterone, growth hormone, leptin, insulin, and estrogen—your body adjusts by ultimately slowing down your metabolism. And a slower metabolism leads to weight gain and difficulty losing weight. Hormone imbalances can lead to insatiable hunger, stress eating, sugar cravings, food addictions and stubborn fat, among other things., The solution, Dr. Sara Gottfried contends, is to reset the efficiency of your hormones by repairing and growing new hormone receptors.