The International Workshop on human lactation dedicated specifically to the topic of Maternal and Environmental Effects on Lactation repre- sents the recent progress of research in human lactation. Only four years ago it was clear that we do not yet have sensitive research techniques specifically adapted to the study of human milk. This need was addressed by an NIH convened workshop in 1982, the concensus being that appropriate methods have to be developed for the study of the composition of human milk. The progress in the development of these techniques was the subject of the second workshop...