Can a vibrating belt fend off bone density loss?

An low-intensity vibrating belt approved by the Food and Drug Administration mimics some effects of exercise to help maintain bone density. Maria Fabrizio for NPR hide caption toggle caption Maria Fabrizio for NPR Andrea Bloom, 59, of Pleasanton, Calif., learned she had osteopenia, or low bone density, after a bone density scan. "When I saw my results, it was pretty shocking because I was one-tenth of a point away from an osteoporosis diagnosis," she says. …