Jim McKenna talks about how co-sleeping can reduce sleep apnea in a baby. I don't think he's mentioned a benefit of co-sleeping that a friend of mine noticed. Her husband has sleep apnea. She watched husband and daughter napping together once. Husband's breath caught and stopped. The baby stirred restlessly as the episode progressed, which caused her husband to stir and start breathing again. Neither one woke up. Mutualism in action! Diane Wiessinger, MS, IBCLC, LLLL Ithaca, NY