Posted 4/19/2007 11:33 PM (GMT -7)
From what I've read poor sleep can definitely stress your immune system. Your body does a lot of repairs at night while you're sleeping, and if you're not sleeping well enough or long enough it can't finish its repairs each night and, over time, you start to wear out. However, poor sleep can also be the result of underlying health issues such as infections, hormonal imbalances, or metabolic disorders. So which came first?