On Thursday's edition of Market Checkup, The Motley Fool's health-care focused show for investors, Fool health-care analyst David Williamson sheds some light on what's driving the biggest movers in the health-care space today.

In this segment, David takes a look at two of the day's biggest losers in the health-care space. Medical equipment maker Hill-Rom (NYSE:HRC) fell by more than 15% today, after reporting an abysmal quarter. Net income fell by an astounding 45%, with the company lowering 2014 guidance and cutting 350 jobs within the company. Meanwhile, Herbalife (NYSE:HLF) is being called into question, yet again, for potentially being a pyramid scheme. This time, U.S. Senator Ed Markey of Massachusetts is the one calling for an investigation, both from the SEC and the Federal Trade Commission. David takes a look at the inside story on these two stocks in the video below.

David Williamson has no position in any stocks mentioned. The Motley Fool has the following options: long January 2015 $50 calls on Herbalife Ltd.. 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.