> Another possibility is, that any food that the body has > difficulty digesting may cause drowsiness, because > the body needs to conserve energy at that time. > Is it possible that these peptides or perhaps opiates may confuse neurotransmitting in the body (as morphine ?) even if they don't reach the brain. However, the blood-brain barriere is not perfect.(as would not the blood - spine, or the probably existing the blood-gut- neurocentre barriere be) Will it not be challengend by any exessive blood carried substance, beening milk prtoteins or other substances which are not naturalally placed elsewhere by 'the body' ? > Max > > -martinf.