Magazine covers and newspaper headlines call it a national crisis. Confronted with the health and social costs of obesity, Americans will spend more than $30 billion dollars in their annual battle of the bulge, and most will lose the fight. Are we destined to be fat? And what's so wrong with a few extra pounds, anyway? We tackle these questions and more on this episode of Second Opinion.

Once known as wonder drugs, they can actually be harmful to your health. How has our reliance on antibiotics helped create a new generation of super bugs? And what can we do to keep our families safe? These questions and more on this episode of Second Opinion.