This issue focuses on what the endocrinologist needs to know about sports and doping, and provides the most up-to-date information. Topics covered include growth hormone, insulin-like growth factor, anabolics, urine testing, Beta-2 agonists, stimulants, glucocortiocoids, dehydroepiandrosterone (DHEA), erythropoietin (EPO) analogues and blood doping, muscle growth factors, and training issues.