Scientists have long been divided over whether neurogenesis—a process involving the growth of new neurons—continues into adulthood. Last year, a controversial study published in the journal Nature posited that humans stop generating new cells in the learning- and memory-centered hippocampus region long before reaching adolescence. Now, research published in Nature Medicine shifts the debate back in favor of late-in-life neurogenesis: As Sharon Begley reports for STAT, the latest findings suggest humans are actually capable of producing fresh cells well into their 90s. Continue reading The Brain May Actually Keep Generating New Cells Well Into Old Age
More than a week has passed since Cyclone Idai tore through the coast of southeastern Africa, dealing a devastating blow to the region. The cyclone has killed more than 750 among the three countries impacted, reports the Associated Press. And it’s left the major city of Beira in ruins. Continue reading Southern African Countries Face Disease Outbreaks, Mental Health Crisis in Wake of Cyclone Idai
When historians trace back the roots of today’s opioid epidemic, they often find themselves returning to the wave of addiction that swept the U.S. in the late 19th century. That was when physicians first got their hands on morphine: a truly effective treatment for pain, delivered first by tablet and then by the newly invented hypodermic syringe. With no criminal regulations on morphine, opium or heroin, many of these drugs became the “secret ingredient” in readily available, dubiously effective medicines. Continue reading How Advertising Shaped the First Opioid Epidemic
If the eyes are windows to the soul, they’re open windows, potentially letting in all kinds of unwelcome bugs. To ensure that doesn’t happen, our tears are loaded with microbe-killing compounds and immune cells. In fact, our eyes are so inhospitable that it was long thought they were the only part of our bodies which lacked a symbiotic bacterial community. But now, scientists have found evidence of a once-inconceivable ocular microbiome—and it may help eyes fight off disease.
For decades, the pipes that brought water to LeAnne Walters’ house did their job unnoticed and safely. But in summer 2014, that changed.
A sneeze can launch mucus and saliva out of your system at 10 miles per hour(not 100 or more, contrary to common lore), often spreading pathogens in the process. But until very recently, researchers didn’t have a good idea of how exactly your nasal fluids move through space.
Imagine looking through a fogged-up car window. You can see shapes and movement on the other side, but everything is blurry, the colors muted. Now imagine if that’s what the world looked like every time you opened your eyes. That’s what life is like for the millions of people living with cataracts, the leading cause of blindness globally.