A study at LSU Health Sciences Center New Orleans has found that the popular dietary supplement ginkgo biloba doesn't improve mental function in patients with multiple sclerosis.
Neurologist Jesus Lovera did the study on 120 people because an earlier, smaller study had seemed promising. Ginkgo is taken by many people who have the disease, which attacks the myelin that insulates nerve fibers. About 40 to 60 percent of multiple sclerosis patients develop problems with memory or other cognitive functions.
In 2008, just a few days before the Democratic presidential primary between Barack Obama and Hillary Clinton in Pennsylvania, a large group of Pennsylvania voters got a very unusual phone call.
It was one of those get-out-the-vote reminder calls that people get every election cycle, but in addition to the bland exhortations about the importance of the election, potential voters were asked a series of carefully constructed questions:
"Thirty years ago, a positive HIV status was considered a death sentence. As treatments for the disease have advanced over the past three decades, we're wondering how younger people view the disease today."
Hundreds of people e-mailed and commented with their reactions. We also gathered reactions from young folks we met on the street.
Crystal Roberts-Lee has lived a tough life, and her HIV has, in some ways, been the least of her worries.
She was addicted to heroin and cocaine. Her daughter went to prison. A scorpion tattoo crawling across her neck marks the day her husband died from AIDS. Now, at 59, Roberts-Lee is the healthiest she has ever been.
"After I take my medicine, it's just a normal day for me," she says. "I go on with whatever I have to do. If I'm just out and about, I feel like I'm just like the next person."
It's been over a week since scientists announced that they've found the Higgs boson particle. It's an important discovery. They say that although the Higgs boson particle is small - or, come to think of it, perhaps because of it - it holds the universe together. But for all the publicity the particle's received, how many of us could explain what it actually does? Well, here's the announcement from scientists in Switzerland.
There may be no better town in America for observing the heavens than Tucson, Arizona. It has low humidity, high elevation and a darkened desert. That part of the state has attracted quite a few astronomers, both professional and amateur. We sent NPR's Peter Breslow to Tucson to seek out this community of stargazers.