Why is being overweight unhealthy?

Being overweight is not an appearance problem, it's a medical problem.  There are over 53 serious diseases that are caused by being overweight - heart disease, high blood pressure, high cholesterol, stroke, diabetes and cancer to name a few.  It is the 2nd most preventable cause of death killing over 300,000 people per year.  Studies show that even losing as little as 10 pounds can reduce your blood pressure.