Defying Expectations: Penn Medicine Study Reveals Americans Report Improved Sleep With Age
Aging does not appear to be a factor in poor sleep, a new study by Perelman School of Medicine at the University of Pennsylvania shows. In fact, subjective sleep quality seems to improve over a lifetime, with the fewest complaints coming from people in their 80s. The new study is published in the journal SLEEP.
"This flies in the face of popular belief," said Michael Grandner, PhD, research associate at the Center for Sleep and Circadian Neurobiology and lead author of the study. "These results force us to re-think what we know about sleep in older people — men and women."
The study examined rates of sleep disturbance and daytime fatigue reported by 155,877 adults participating in a randomized national telephone survey. Respondents were asked about sleep disturbances and daytime tiredness. The survey also asked about race, income, education, depressed mood, general health and time of last medical checkup. All responses were weighted so that they matched U.S. Census data.
Nanoparticle blueprints reveal path to smarter medicines
New research involving Penn Engineering shows detailed variation in lipid nanoparticle size, shape, and internal structure, and finds that such factors correlate with how well they deliver therapeutic cargo to a particular destination.
A generous gift from alumni Glenn and Amanda Fuhrman brings the work of internationally acclaimed artist Jaume Plensa to the University of Pennsylvania. The latest addition to the Penn Art Collection expands Philadelphia's public art.
A massive chunk of ice, a new laser, and new information on sea-level rise
For nearly a decade, Leigh Stearns and collaborators aimed a laser scanner system at Greenland’s Helheim Glacier. Their long-running survey reveals that Helheim’s massive calving events don’t behave the way scientists once thought, reframing how ice loss contributes to sea-level rise.
