You are right Marty.
Actually there are a lot of causes and effects coming into play period with sleep too (I’m not speaking to the study now, I’m speaking in general)
Eating can increase the need for sleep. I’ve been many times in my life(over the past 30 years of it) where I was having a very hard time getting to sleep and I knew it was because I had not eaten. I was not hungry, but I wanted to sleep timely and couldn’t. It usually worked out though and without me eating....worked out to my satifaction anyway.
I’ve also been in the place where I had so little sleep that it affected my body in terms of trying to eat like I normally would too.....although there is a point in there, at least for my body, where lack of sleep does actually equate to less hunger......but I’ve had it equate to more of a need for food too, perhaps because my body said well if I can’t “recuperate” with sleep then at least give me some food energy to go on........
Now to speak to a whole ‘nother area. Chronic lack of sleep definitely leads to weight gain in most subjects. And its not from eating any more. In other words, they could continue to eat exactly as they always did, but over time, if the body is not given proper sleep, they will gain. (if anyone cares I’m sure I could find those studies and study sources, I’m assuming noone does, so I’m not going to take the time to look those up right now)
Oh and over time, chronic and frequent lack of sleep affects the metabolism, having a negative impact on it... (been a lot of studies done in that direction as well)
chantelle
On 10/23/10 7:34 AM, "marty398" <marty398@yahoo.com> wrote:
Which is the cause and which is the effect? It doesn't seem that the study really nails that down well enough.
Does the lack of sleep cause hunger? Does adequate sleep reduce hunger?
Or does hunger (and eating) increase sleep requirement? Does eating less give you more energy and reduce sleep needed?
Without knowing the cause and effect, it seems that the study might be correct (or not) that there is a relationship between sleep and weight loss but not be worth much for those trying to loose weight. It might correctly identify the hormone causing it. But what is the driver: Sleep or need for sleep?
--
Marty
--- In fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> , "poisongirl6485" <poisongirl6485@...> wrote:
>
> This makes sense to me. I only get 4-5 hours a night after working til 2 am, and I've noticed I get quite hungry around noonish-1 pm. My window isn't until 4-9 since I don't want to do a full 8 hrs at work without eating anything. I guess I'll just try to work through it.
>
> --- In fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> , "foxchyck" <foxeye@> wrote:
> >
> > I suspect the key isn't the number of hours, but whether you sleep till you are no longer tired. :) Tired = hungry.
> >
> > And if someone has other ways to manage their hunger, then maybe even being tired won't matter to their weightloss.
> >
> > But I do have to anecdotally agree with the study...when I wasn't using coffee to suppress my appetite, then a good night's sleep was the difference between an easy day on the fast and a $!#@%!@$ painful one.
> >
> > --- In fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> , "tamaratornado" <tamaratornado@> wrote:
> > >
> > > Well, I love to sleep, so I guess I just pulled up a study to prove my own bias!
> > > LOL
> > >
> > > --- In fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> , "Jennifer Lupo" <gremlinpugs@> wrote:
> > > >
> > > > Can't say the same thing. I generally sleep 4 - 5 hours a night and it has not hurt me in any way since being on fast 5
> > > >
> > > > In fact I just got my health checkup and I am now at 12 % body fat over 170 lbs of lean muscle and have dropped to size 16 regular.
> > > >
> > > > My study of one is very successful thanks to fast 5. I just need to get my total weight under 200 permanently and I will be content.
> > > > Sent from my Verizon Wireless BlackBerry
> > > >
> > > > -----Original Message-----
> > > > From: "RickS" <rstewart@>
> > > > Sender: fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com>
> > > > Date: Thu, 21 Oct 2010 16:30:29
> > > > To: <fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> >
> > > > Reply-To: fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com>
> > > > Subject: [fast5] Re: Sleep more, lose weight, says study
> > > >
> > > > I have personally noticed this phenomenon in my own life. Since I started Fast-5, I felt like I needed less sleep. So I feel pretty good on 5.5-6.5 hours of sleep. HOWEVER, and this leads to a big BUT(T), I found that paradoxically, if I sleep less, I get ravenously hungry during my eating window and I actually begin to GAIN weight on Fast-5 because I counter-surf all night long! My hunger is just off the charts. But If I go to bed earlier and get 7-8 hours of sleep, the next day, I'm really not hungry at all.
> > > >
> > > > -Rick
> > > >
> > > >
> > > > --- In fast5@yahoogroups.com <mailto:fast5%40yahoogroups.com> , "tamaratornado" <tamaratornado@> wrote:
> > > > >
> > > > > Sleep more, lose weight, says study
> > > > >
> > > > > Are you trying your best to eat right and exercise, but still not losing weight? One study suggests that lack of sleep could throw off a diet.
> > > > >
> > > > > Research from the University of Chicago showed that dieters who slept for 8.5 hours lost 55 percent more body fat than dieters who slept 5.5 hours.
> > > > >
> > > > > "Lack of sufficient sleep may compromise the efficacy of typical dietary interventions for weight loss and related metabolic risk reduction," the study authors concluded in an article released Monday in the Annals of Internal Medicine, a journal of the American College of Physicians.
> > > > >
> > > > > Not having enough sleep could affect a hormone called ghrelin, known to affect appetite and weight. An increase in this hormone level has been shown to make people hungrier and cause higher fat retention.
> > > > >
> > > > > The dieters who slept less reported feeling hungrier throughout the course of the study.
> > > > >
> > > > > http://pagingdrgupta.blogs.cnn.com/2010/10/04/sleep-more-lose-weight-says-study/
> > > > >
> > > >
> > >
> >
>
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