Vitamin D and attainment of peak bone mass among peripubertal Finnish girls: a 3-y prospective study.

Background: Little is known about the effect of vitamin D status on bone gain in adolescents.

Objective: The objective was to examine whether vitamin D status is associated with accrual of bone mineral density (BMD) and bone mineral apparent density (BMAD).

Design: This 3-y prospective study examined the association between changes in BMD or BMAD and serum 25-hydroxyvitamin D [25(OH)D] in 171 healthy Finnish girls aged 9-15 y.