I was just talking about these hormones with my endocrinologist, who recommended I get a sleep study when I didn't lose weight after exercising for two hours per day and eating 1600 calories per day for eight months. My sleep doc also talked about them.echo wrote:LCG - yes there's a link between interrupted sleep and the two hormones (I can never remember them either). One is Leptin the other is Gh... something. Try googling Leptin and OSA / sleep apnea - there are quite a few articles out there on that. When you get good sleep, the hormones are well regulated. When the sleep is disrupted, the hormones are out of whack making it more likely to gain weight. Or some such .
The hormones are leptin and grehlin. One controls our feelings of fullness (leptin) and one controls our feelings of hunger (grehlin). When we don't sleep enough, our bodies make more grehlin and less leptin than they should, making us feel hungry all the time. (Accurate description of me until about one week ago.) I can honestly say that I have experienced fullness via my brain due to the hormone a few times this week. Fullness before used to be a distended stomach. Now my brain seems to be able to tell me I've had enough. I'm almost ecstatic. I haven't seen any weight loss yet, but if I keep feeling full I'm sure I will!
The wikipedia articles are pretty good (http://en.wikipedia.org/wiki/Ghrelin and http://en.wikipedia.org/wiki/Leptin), although the leptin article contains a lot of medical jargon.