Two-thirds of adults and nearly one-third of children in the United States are overweight or obese. The rate of obesity in children and adolescents has reached epidemic proportions. USA TODAY, the Nation''s No. 1 Newspaper, reports that "heavy teens are often destined for skyrocketing weight gain in their twenties." Over time, obesity causes illnesses, reduces life expectancy, and increases health care costs. The U.S. government, doctors, and scientists are working to educate citizens about good nutrition and the importance of daily exercise. In this book, you''ll read about health issues caused by obesity and follow the medical interventions and lifestyle changes that address them. You''ll learn about the biological and environmental causes for weight gain. And you''ll receive guidance on how to attain and sustain a healthy body so you and your friends and family can make better choices and support those who struggle with weight issues.