Discovery of leptin and elucidation of leptin gene expression -- Leptin receptors and mechanism of action -- Leptin interaction with brain orexigenic and anorexigenic pathways -- Measurement of circulating leptin and soluble leptin receptors -- Physiological and hormonal factors that influence leptin production -- Leptin, obesity and leptin resistance -- Leptin and intermediary metabolism: Focus on glucoregulation and lipid metabolism -- Leptin in acute stress -- Leptin and the kidney -- Leptin, immune function, and inflammation -- Leptin and bone -- Leptin, cell cycle, and cancer -- Leptin, the autonomic nervous system, and hypertension -- Dynamic leptin secretion in obesity and diabetes -- Leptin therapy of congenital leptin deficiency -- Leptin therapy in people with normal leptin gene -- Leptin therapy in patients with lipodystrophy and syndromic insulin resistance -- Leptin therapy in women with hypothalamic amenorrhea -- Leptin therapy as a substitute for insulin replacement in experimental models of diabetes: Clinical implications in humans -- Novel combinatorial therapies involving leptin: Opportunities for mechanistic advances and therapeutic translation in human diseases.