Treatment of anorexia nervosa is associated with increases in bone mineral density, and recovery is a biphasic process involving both nutrition and return of menses.

Dominguez, J, Dominguez, J, Goodman, L, Sen, Gupta, S, Mayer, L, Etu, SF, Walsh, BT, Wang, J, Pierson, R, Warren, MP,
Am J Clin Nutr. 2007 doi: