Nearly 100 million Americans are either overweight or obese today, more than 60% of all U.S. adults. Since 1980, the number of overweight and obese Americans has doubled, with twice as many overweight children and three times as many overweight adolescents. Obesity is now the second leading cause of preventable death in America, with over 400,000 deaths per year associated with related illnesses. Fast food consumption has risen significantly, with one in four Americans visiting a fast food restaurant daily. In 2002, two teenage girls sued McDonald's claiming their weight and health problems were caused by their frequent consumption of McDonald's food.