Heredity is passed down from parents to offspring through genes and can influence traits and risks of certain diseases or conditions. Some examples provided include genes linked to obesity and mental illness. Behavior is also influenced by heredity as certain genetic predispositions can increase risks of addiction. Culture, environment, media, technology, and attitude can also impact health. Unhealthy behaviors like smoking, drinking and driving, and anorexia are linked to negative health outcomes. A positive attitude is associated with benefits like lower stress and depression. Media influences body image and some unhealthy weight loss behaviors in adolescents. Technology overuse can cause sleep deprivation and obesity in children and youth.