In this video, health benefit professional Tom Harte discusses how to help overweight children and the importance of promoting a healthy lifestyle. If Americans continue to pack on the pounds, obesity will cost our country about 350 billion in medical related expenses by 2018; eating up more than 20 of health-care spending. And if the percentage of obese adults doesn't change, but stays at the current rate of 34 then excess weight will cost the nation about 198 billion by 2018.