Depro - provera

Depo-medroxyprogesterone in teenagers
Scholes D . Change in bone mineral density among adolescent women using and discontinuing depot medroxyprogesterone acetate contraception. Arch Pediatr Adolesc Med 2005;159(2):139-44.

This longitudinal study showed a significant bone loss in teenagers using DMPA, but also there was substantial recovery after discontinuation.