UnitedHealth Group (NYSE:UNH) reported earnings today, beating on the top and bottom lines. Excellent.

But let's dig a little deeper, to the business behind the numbers. The key question for investors to ask is whether UnitedHealth Group is fundamentally healthy under the positive top-and-bottom line news.

In the video below, Motley Fool health care analysts Michael Douglass and David Williamson lay out three key takeaways from UNH's second quarter earnings.

David Williamson owns shares of UnitedHealth Group. Michael Douglass has no position in any stocks mentioned. The Motley Fool recommends UnitedHealth Group and owns and recommends shares of Gilead Sciences. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.