There is new uncertainty surrounding the safety of PPIs (proton-pump inhibitors) for people suffering from severe heartburn or gastroesophageal reflux disease. German researchers recently found a correlation between the PPIs and dementia, prompting scrutiny at these over-the-counter drugs. Also, the future of long-distance surgery and what it means for patients. And, running injuries and how best to avoid them.

Guests:

Dr. Darrell Gray, Gastroenterologist, The Ohio State University Wexner Medical Center

Alexandra Ossola, Freelance Science Journalist

Gretchen Reynolds, Columnist, The New York Times Well Blog