I have been given to understand that some particulate matter present as residue on clothing, fabric or other surfaces resulting from prior exposure to tobacco smoke creates respiratory problems in infants. I am curious as to how much exposure results when the baby does not co-sleep, versus when it does. If more exposure occurs when co-sleeping, then why? Can this be controlled by the user? Is there any research to indicate whether smokers breastfeed longer and more exclusively if they co-sleep? If it were found to be true, how would it affect the risk over the long term? Have the researchers controlled for smoking occurring in the sleeping room at any time during the day, whether it is the "parents" room or the "baby's" room? This is highly controllable, and if it were teased out as a variable and shown to be important, it would be good to know. Is the sleep of smokers affected, and if so, is this a variable? Also, is the rate of SIDS in smoking, bf, co-sleepers variable with the dosage of tobacco taken daily, or by time of day? Do smokers tend to have a higher incidence of co-variables such as alcohol consumption, warmer household temperatures, etc.? How might these other variables affect co-sleeping? Have all these questions been addressed with marijuana smoke? Arly Helm, MS, IBCLC *********************************************** To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or digest) To unsubscribe: unsubscribe lactnet All commands go to [log in to unmask] 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