David Dinges of the School of Medicine says additional sleep on the weekend helps one recover from sleep lost during the week.
Perelman School of Medicine
Lawrence Holzman of the School of Medicine discusses a study on kidney disease among African-Americans.
Jeffrey Weiser of the School of Medicine says there is such a thing as good bacteria.
Kathryn Schmitz of the School of Medicine discusses the benefits of resistance training.
University of Pennsylvania School of Medicine researchers have described a previously unknown biological mechanism in cells that prevents them from cannibalizing themselves for fuel. The mechanism involves the fuel used by cells under normal conditions and relies on an ongoing transfer of calcium between two cell components via an ion channel. Without this transfer, cells start consuming themselves as a way of to get enough energy.