>>>>>> This is in fact a good way of measuring the opening and closing of the paracelular pathway by measuring the secretion of lactose in urine (being passed from milk to blood to excretion) in conjunction with milk lactose levels.>>> I heard Paula Meier speak this week and she said that SODIUM leaks from interstitial fluid into the milk when this happens. She had an excellent slide showing a diagram of the "leaky" junctures between alveolia. She mentioned a case in which a premie was getting too much sodium from mom's milk at this time. Isn't this also why the milk taste changes as mom goes through weaning and subtle fullness occurs? Mary Kay Smith, RNLP, IBCLC Romeoville IL *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html