I didn't see that report, but the facility where my lapband surgery was done has a website with support materials on it, and one of them is a video about sleep issues. I watched it last night and came away with some information that really inspired me to change my ways:
1. Some of us think we're "nightowls," but in fact, all
humans are diurnal, not nocturnal -- we're supposed
to sleep at night and be awake during the day. Otherwise, our health suffers.
2. While you're asleep, your body produces growth hormone, which repairs and replaces cells that have been damaged. For example, the lining of the small intestine has to be renewed every night in order to absorb nutrients the next day. If you don't get enough sleep (and at the right time) to produce that hormone and regenerate those cells, then the small intestine sends a signal to the brain that it is not prepared to process food, so don't eat yet.
That's why some of us don't feel hungry until lunch, or even late afternoon -- our bodies are damaged and can't handle food!
(To those of us who are overweight, that might sound like a good thing, but of course it's not. It wreaks havoc with your metabolism and your immune system, so you're likely to actually gain weight and
get sick as well.)
3. This one is weird, but they say it's been proven: no matter what time you go to bed, the vast majority of your growth hormone is produced between midnight and 3:00am. So if you aren't asleep during that time, you're missing the bulk of that hormone, and your body isn't able to repair damage at anything like the rate it should.
So not only do we need to sleep between 7.5 and 9 hours every night (no more and no less, or there are consequences), we need to be sure we're asleep by midnight, too! I've got a lot of work to do to change these bad habits.
P.S. -- Another thing that specialist said: that we would get much better sleep if we slept alone, but he's afraid to say that anymore because of the way people react. He said, "If I tell people to kick their spouse out of the bedroom, he's on the couch that very night. But if I tell them to kick out their pets
the one that ends up on the couch!"