I'm not trying to lead you astray. It's just that scientists are not skeptical enough about their mouse studies. iStockphoto hide caption

itoggle caption iStockphoto

Andrew Witty, CEO of GlaxoSmithKline, says that better control of infectious diseases in Africa is allowing chronic diseases to come to the surface. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP

If new guidelines are followed fully, half the medicine chests in America could eventually be stocked with cholesterol-lowering drugs such as atorvastatin, the generic form of Lipitor. Bill Gallery/AP hide caption

itoggle caption Bill Gallery/AP

Now that Eli Lilly & Co.'s antidepressant Cymbalta and some other blockbusters have gone generic, the company is spending less on promotional activities by doctors. Darron Cummings/AP hide caption

itoggle caption Darron Cummings/AP

A girl with hepatitis C holds a medical report while being treated at a hospital in Hefei, China, in 2011. China has one of the greatest burdens of hepatitis C, but it's still not clear whether a deal for lower prices for a new drug from Gilead Sciences will apply there. Barcroft Media/Landov hide caption

itoggle caption Barcroft Media/Landov

There's confusion about whether drugmakers can provide financial assistance to patients who buy health insurance on the exchanges. Roel Smart/iStockphoto hide caption

itoggle caption Roel Smart/iStockphoto