The document discusses major public health issues facing college students, including obesity, physical activity, and tobacco use. It defines obesity and overweight, describing the health risks of obesity such as heart disease, diabetes, and cancer. Physical activity is important for cardiovascular health, weight control, and preventing depression. While over 60% of Americans are overweight or obese, only 22% engage in regular physical activity. Smoking causes over 400,000 deaths per year and increases risks of cancer, heart disease, and stroke. The document outlines strategies for quitting smoking and promoting healthy behaviors among college students.