Obesity / Statistical Analysis / Health Education / Humans / Blood Glucose / Diabetes mellitus / Female / Male / Body Mass Index / Experimental Study / Group Intervention / LDL-cholesterol / Aged / Middle Aged / Public health systems and services research / Indexation / Type 2 Diabetes Mellitus / Control Group / Diabetes mellitus / Female / Male / Body Mass Index / Experimental Study / Group Intervention / LDL-cholesterol / Aged / Middle Aged / Public health systems and services research / Indexation / Type 2 Diabetes Mellitus / Control Group