I must have seen commercials for Prevagen 50 times: story after story from everyday people who describe improvement in memory once they began taking Prevagen. And perhaps you recall older commercials playing off the idea that many people take supplements that boast of gut, joint, and heart health claims. Those commercials memorably asked, “So why.

It used to be that radiation therapy for prostate cancer involved weeks or months of repeat visits to a clinic for treatment. Today that’s not necessarily true. Instead of giving small doses (called fractions) per session until the full plan is completed, radiation delivery is moving toward high-dose fractions that can be given with fewer.