Just to clarify the 1 lb. weight loss. The baby was a tongue sucker. Apparently was just swallowing saliva. In the winter with the heat on, there is increased insensible water loss, and with little or no intake (and scanty output) I do not think this was an "unexplained" weight loss. Regained very rapidly when FED!! Martha Grodrian Brower RD LD IBCLC