Intermittent fasting

[Guest guest]

Hi all, de-lurking for a moment - after reading an article linked

from here, I'm wondering how many of you use intermittent fasting as

part of your CRON program? If you do, how often/how long and what

does your fast consist of (water only, F & V juices, or?)

Thanks for your input!

Shanna

[Guest guest]

I do not fast on a regular basis, but will do it randomly. On average

about once every other month, sometimes once a month. Usually for two

days. My current fast began Wednesday evening after a meal and will

end this Saturday evening. I only drink water or some of the hot

chocolate obtained from Warren with a little no cal sweetener added.

I find no food for two days is quite easy. Three days begins to get

my attention. And four days, I'm pretty edgy (I won't do four any

more). I did 12 days on a dare once and felt like killing anything

and eating it (well pretty close anyway).

[Guest guest]

Leptin Update (A basic news article)

Excerpt: " The new science is showing that when a person eats is as

important as what they eat. "

The recommendations don't necessarily apply to CRON Masters

because they don't want to lose weight. Perhaps the opposite

would apply if the goal is to " weigh " as much as one can on as few

as calories as possible?

PS: My big question regarding intermittent fasting is does it

suggest the CR is NOT necessary???? (and sorry about the repeat)

The article:

Fat Burning Breakthroughs: The Hormone Link

Two ways to access prime fat burning time. New science backing the

importance of controlling the fat hormone leptin, as explained in

the breakthrough health book " Mastering Leptin " .

(PRWEB) July 22, 2004 -- New attention being paid to the obesity

epidemic by the government, medical doctors, Medicare, and the news

media has yielded little in terms of original thought. The American

Dietetic Association (ADA) has republished the same portion control

ideas they have been espousing during the entire time the obesity

epidemic has been growing and worsening in our country. The ADA

routinely criticizes all other diets as " quick fix fads. "

Consumers

looking for answers are perplexed; help is finally here.

Answers to the obesity epidemic are emerging from the over 300

scientific studies published each month on the subject of fat cells

and how they are controlled by hormones such as insulin and leptin,

and genes. This key information remains a complex mystery to the

majority of the general public.

However, two predominant times when fat burning can occur are

emerging from this literature. Individuals who understand this

science can take advantage of it and begin losing 1-3 pounds a week

in a healthy way. One principle has to do with the timing of eating,

the other with the timing of exercise.

The prime fat burning time for weight loss in relation to the diet

is during sleep. This only works well when a person does not eat

after dinner. It works best when a person does not snack at all

during the day, getting a moderate number of calories in either two

or three meals a day. Snacking on any amount of calories becomes a

large problem, as the snack raises insulin and consequently leptin

at the wrong time of the day, in essence shutting off fat burning

hormone and gene signals. The new science is showing that when a

person eats is as important as what they eat.

The prime fat burning exercise for weight loss is mild aerobic

activity, lasting at least one hour and ideally for one and a half

hours. Heart rate and intensity are of secondary importance. Feeling

refreshed when done is vital. To access fat burning mode, either

exercise first thing in the morning before eating food or several

hours after eating. Once done exercising one should not eat until

hungry. If a person feels good energy and is not hungry they may

burn a half pound of actual fat over the next hour. Eating anything

will stop that process from occurring. On the other hand, as soon as

a person is hungry after exercise they should eat. Fat burning is

not occurring when energy is declining and a person is getting

hungry. This approach takes advantage of the recently discovered

uncoupling proteins in muscle, which when properly activated by the

hormone leptin can 100% dispose of calories as heat.

The science behind these easy-to-follow fat burning breakthroughs is

fully explained in the second edition of " Mastering Leptin " , by

Byron J. s, CCN, making it possible for individuals to

understand how hormones work in the body and why the " 5 Rules of

Healthy Eating " are imperative for balancing the hormones needed to

attain and maintain a healthy weight.

http://www.emediawire.com/releases/2004/7/emw143028.htm

>

> > I have been fascinated by Lee Shurie's experience with meal

timing,

> > and the longevity aspects of intermittent fasting. Intermittent

> > fasting preserves muscles which I find more appealing than the

> > emaciated look obtained from CR.

[Guest guest]

Hi folks:

A few thoughts about 'fasting'.

First, there is one word in this subject line that is redundant, I

think - unless someone here is prepared to own up to practising non-

intermittent fasting?

Second, fasting is just a special case of what might more generally

be termed caloric intake time profiles. Fasting is the case where

intake is zero, or negligible, for a period in the time profile.

Third, there are two principal time profiles to be considered: the

intra-day profile, and what one might call the intra-week profile.

The intra-day profiles include everything from multiple meals daily

as eaten by some diabetics, through three meals a day, to one meal a

day, some preferring that to be in the morning, others in early

evening (Shurie's Solution). And also, of course, zero intake as

part of the intra-week profile fast.

Similarly there are many different potential intra-week caloric

profiles. (Using a total weekly intake of 10,500 kcal) I earlier

suggested:

1000 1000 1000 1000 2000 3000 1500 as one possible implementation of

the 'Shurie Solution'.

Mattsons's mice I believe were on the human-equivalent of:

3500 0 3500 0 3500 0 0 eating early in the day. Both the control and

CR mice did very nicely on this regimen, but as far as I know no

evidence was presented to suggest it was better than 1500 per day

every day - although there are suggestions that body weight may be

maintained better on a profile of this kind than on one where intake

is 1500 kcal every day.

There are of course an almost limitless number of possible patterns

that can be dreamed up.

Then Warren tells us (and, reportedly, MR also) that: " It's calories,

calories, calories. " With the implication that (apart from ON) all

else, including fluctuations in caloric intake, is of little if any

consequence.

BUT DO WE REALLY KNOW? Are there well organized studies of the

effects of fluctuating caloric intake? And the little we think we do

know has come almost entirely from studies of ad libbers. So do even

those few studies tell us whether we would be likely to benefit in

the same way an ad libber would?

It seems to me that until we have decent empirical evidence of the

effects of these things on people on calorically restricted diets any

beliefs we have about the effects of fluctuating caloric intake are

all a stab in the dark. Ten years from now we will know a lot more.

Perhaps it makes sense to adopt a fluctuating intake if it helps us

adhere to a good overall CRON diet, since we ARE sure about the

benefits of CRON.

If anyone sees studies on this issue that have not already been

posted here, please post them. Thanks.

Rodney.

> > > I have been fascinated by Lee Shurie's experience with meal

> timing,

> > > and the longevity aspects of intermittent fasting. Intermittent

> > > fasting preserves muscles which I find more appealing than the

> > > emaciated look obtained from CR.