The nutrition researchers recruited 236 women who had hit menopause one to ten years earlier, were not on hormone replacement therapy or taking any prescribed medications known to influence bone metabolism.
Two groups of women ate either 100 grams of dried plums or 100 grams of dried apples. Additionally, participants received 500 milligrams of calcium plus 400 IU of vitamin D daily.
Those eating the dried plums benefited from a big improvement in bone mineral density. Tests in the United Kingdom have yielded similar results.