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.