After menopause, women frequently experience progressive bone loss, which places them at increased risk for bone fractures. Exercising and receiving calcium and vitamin D supplements, although helpful, do not always prevent bone loss or the eventual need for prescription medications to prevent loss and fractures. Whole-body vibration (WBV), which involves standing on an oscillating platform for several minutes each day, has been suggested as a possible way to prevent bone loss, and several companies have been marketing WBV devices to the public. Whether WBV works to prevent bone loss in women after menopause is unknown.