Effect of a mixture of calcium, vitamin D, inulin and soy isoflavones on bone metabolism in post-menopausal women: a retrospective analysis

Objectives Aging might affect the effectiveness of the sole supplementation of calcium and vitamin D in post-menopausal women, due to the development of vitamin D resistance in the gut, which limits calcium absorption. Thus, we wanted to test the efficacy of a mixture of calcium (500 mg), 25-hydroxyvitamin D [25(OH)D; 300 IU], inulin (3 g) and soy isoflavones (40 mg), to improve calcium absorption in this type of population.