If you were going to do composition analysis of breast milk, what would you think of the following methodology: hand expression of 15 ml, using both breasts, 30 minutes after the last breastfeeding, between 9 and 11 am in the morning. Would this give you a good idea of milk composition? Also, is it true that more than 50% of the energy content of breast milk comes from the fat? I would have thought more came from the lactose. Finally, those of you working with teenage moms, what percentage would you say are breastfeeding when they leave the hospital? Lower than national Ross statistics? What percentage are still breastfeeding at 3 months post partum? At six months? If one started with a sample of 100 moms, would you expect to have 35 still breastfeeding at 6 months postpartum? Kathy Dettwyler