Paul, I found two nice ref. for you from some Brazilian researchers. I wonder are they part of the Groupo which is also on-line? Vitolo,M. et al. Colostrum Composition in Adolescent Mothers, J Am College of Nurt, 1993; 12(5):547-550. Brasil,A. et al. Fat and Protein Composition of Mature Milk in Adolescents, J Adol Health, 1991;12:365-371. Both undertook chemical analysis to investigate the influence of adolescence on milk composition. The conclusion of both studies was that there is functional maturity of the adolescent breast, and "breastfeeding by adolescent mothers of any socioeconomic level is a indicated as that by adult mothers." (Vitolo, 1993.) Hope this helps, Barbara Wilson-Clay, BSE, IBCLC priv. pract. Austin, Tx Owner LAVTNEWS On-Line (the Conference Page) http://moontower.com/bwc/lactnews.html