Keywords: شیب کورتیزول روزانه; HPA; hypothalamic-pituitary-adrenal; SNS; sympathetic nervous system; BMI; body mass index; MIEIHS; Mindfulness to Improve Elders' Immune and Health Status; MMSE; Mini-Mental State Examination; DCS; diurnal cortisol slope; IL-6; interleukin-6; IGF-1;