The first three papers in this issue of Biology of Reproduction are minireviews derived from talks delivered at the 36th Annual Meeting of the Society for the Study of Reproduction, July 19–July 22, 2003, in Cincinnati, Ohio. The minisymposium, titled Impact of Maternal Diet on Fetal Outcome, was organized by Dr. R. Michael Roberts and included presentations by Dr. Tom Fleming, Dr. Jacqueline Wallace, and Dr. Cheryl S. Rosenfeld. The papers included here were submitted to the Editorial Office of Biology of Reproduction and were subjected to the same standards of peer review as all manuscripts published in the journal.