Mr. Downey talked about obesity, health care costs incurred as a result of high levels of obesity, and whether the federal government should spend more on combating obesity. He also talked about an article in the journal Health Affairs titled "National Medical Spending Attributable to Overweight and Obesity: How Much, And Who's Paying?" This research was underwritten by the Centers for Disease Control. (The article can be found on the website www.healthaffairs.org.) He responded to viewer comments and questions.