Lifestyle diseases are caused partly by unhealthy behaviors and partly by other factors. They include cardiovascular diseases, diabetes, stroke, cancer, chronic obstructive pulmonary disease, depression, and musculoskeletal disorders. The document outlines the causes and risk factors for each disease as well as recommendations for prevention through diet, exercise, avoiding tobacco and alcohol, managing stress, and maintaining a healthy weight. Unhealthy lifestyle behaviors like poor diet, smoking, physical inactivity, excessive alcohol consumption, and not managing stress or weight can significantly increase the risk of developing lifestyle diseases.