What evidence do we have—and what evidence is still missing—about how cannabis and its derivatives harm or benefit our health? Sean Hennessy, PharmD, PhD, comments in detail for the public affairs show Up to Date.

A study led by Christopher Morrison, PhD, shows that on the days they hosted President Trump's campaign rallies, cities saw an average of 12% more assaults. Dr. Morrison is a postdoctoral fellow of the Department of Biostatistics, Epidemiology and Informatics.

Just 10 opioid pills, or a three-day supply, is the recommended prescription for acute pain. Making that the electronic-medical-records system default effectively "nudges" physicians toward this approach that leaves little room for misuse or abuse, found a new study led by M. Kit Delgado, MD, MS.

In this moving commentary, M. Kit Delgado, MD, MS, writes from direct experience about the unacceptable number of U.S. fatalities that result from drunk driving. Dr. Delgado, an emergency physician-investigator, and colleague Douglas Wiebe, PhD, contributed to a new report by a committee of the National Academies of Sciences, Engineering, and Medicine.

Children who eat fish at least once a week sleep better and have IQ scores that average four points higher than those who consume fish less frequently or not at all, according to research by Jennifer Pinto-Martin, PhD, and colleagues. Their findings were published in Scientific Reports, a Nature journal.

Research from Junko Takeshita, MD, PhD, MSCE, shows minorities are less likely than whites to seek treatment for the skin disease—even though their conditions tend to be more severe.

Joel M. Gelfand, MD, MSCE, talks with Philadelphia's ABC Action News about additional concerns for psoriasis patients: For every 10 percent more skin surface affected, their risk of Type 2 diabetes rises about 20 percent.

During the 2014–2015 West African Ebola epidemic, many argued that randomized clinical trials—our most reliable way of evaluating new treatments and vaccines—were neither ethical nor feasible in an environment with limited health infrastructure, where severe disease was causing many fatalities. Susan Ellenberg, PhD, and colleagues look at the trials that did occur and comment on strategies for the future.

Research by Audrey Blewer, MPH, of Penn’s Center for Resuscitation Science and the DBEI, reveals that outside of hospitals, men are much more likely than women to get CPR. The article focuses on a study she presented at the recent American Heart Association Scientific Sessions.

In continuing coverage of innovative transplant work by David Goldberg, MD, MSCE, and Peter Reese, MD, MSCE, their trial’s first recipient of a hepatitis-C-infected heart comments on how life has improved since he got the new organ and underwent successful treatment for the infection.