Obesity was the focus of this segment from The Motley Fool's health-care show, Market Checkup. More than 35% of Americans are obese, and obesity can lead to serious health problems, including diabetes, stroke, and heart disease. The AMA also recently classified obesity as an official disease.

In this video, health-care analysts David Williamson and Max Macaluso discuss how two Big Pharma companies -- Novo Nordisk (NYSE:NVO) and AstraZeneca (NYSE:AZN) -- might become the next major players in the obesity space.(NYSE:AZN)

David Williamson and Max Macaluso, Ph.D., have no position in any stocks mentioned. The Motley Fool recommends and owns shares of Johnson & Johnson. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.