Saw a segment on 60 minutes last night about the effects of sleep deprivation. Various studies showed the physiologic effects of sleep deprivation on humans ( and fruit flies). The studies found that people who are sleep deprived:
- are hungrier and eat more, even though their caloric requirements remain unchanged
- are more at risk for Type 2 Diabetes (after just seven days of disturbed sleep, a young healthy human was having more trouble processing sugar)
- have slower reflexes (but don't realize it -- this was compared to how a drunk person doesn't realize they are impaired)
- have lower comprehension (but don't realize it)
- score lower on memory tests
- are less able to cope with negative images
- are less interested in sex
Among the interesting facts cited: In 1960 a study of 1 million people (I think it was americans, but I don't remember), found that the average amount of sleep they got per night was 8 hours. In a recent follow up study that number had dropped to 6.7 hours.
And, on the anecdotal side of things, it was pointed out that sleep deprivation was a factor in many catastrophic accidents including the Exxon Valdez, Three Mile Island, and the Staten Island Ferry crash.
A sleep scientist from Berkeley found that those who got a good night's sleep performed BETTER on a simple memory test than they had the previous afternoon when they first saw the thing to be memorized. He contended that those who get enough sleep would be more productive than those who tried to cheat sleep to get more done.
One of the scientists, an endocrinologist, whose study turned that healthy young man into a pre-diabetic in a week (but said he would go back to normal once he got regular sleep again), said that Sleep should be cited with Diet and Exercise as the third thing that people needed to pay attention to in order to stay healthy.
She noted that young people spend 100 minutes in deep sleep and that number gradually decreases as we get older. By the time we are 50 we only spend 20 minutes in deep sleep a night. She speculated that perhaps that the decrease in deep sleep perhaps contributes to the aging process.
But today, (and I think particularly about the place we moved away from a year ago, Silicon Valley) it's a 24 hour culture. People are working harder than ever, and have so many responsibilities outside of work as well. And kids are way over-scheduled too.
I am not any better. My life is so full, I don't know how to slow down anymore. I keep trying to figure out how to squeeze a little more time out of my day. One day I got up an hour earlier and ran on the treadmill. It was great to get the exercise, but there was a price to pay too. One less hour of sleep.
I also know that when I am sleep deprived, as I was for James' first 5 or 6 months of life, I eat too much. Perhaps that has contributed to my inability to drop any significant weight since I started trying in September.
James is still not sleeping through the night. For a while over the months I sat in the glider chair each time he woke up and fed him. Now he just wakes up one time, but being back at work it is hard to sit in that glider chair. So lately I've just been taking him into our bed where we both sleep from 4 am to 7 am, but not very well.
I told the ladies at daycare about this today and they said that James is playing the mommy card. So I flirt with the idea of CIO, getting enough sleep, having time in the morning to exercise before everyone else wakes up (impossible when James is sleeping next to me.) But just so hard to let go of my last baby, you know?