GSTM1 and hypertensive disorder: As such, the current study was conducted in order to assess (1) the nutritional status, (2) the prevalence of low Hb and Ht levels, (3) body composition, and (4) other health-related characteristics (chronic diseases, supplements/medications use, etc.), as well as the determinants of normal hemoglobin levels, hypertension, normal muscle mass, and normal fat mass in Lebanese TKD players.