How much of this improvement was due to Intermittent Fasting

Brangdon

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Hi. I've been reading this forum occasionally, and this is the first time I've had something to say.

I'm not formally diagnosed. A couple of months ago I self-administered a glucose tolerance test and got some scary results. Fasting level was 6.6 mmol/l, and the 2 hour level was 10.4. I'd also got one high result after a normal, if heavy, meal. Mixed in with this were some more normal results, such as a fasting of 5.3 and a 2-hour postprandial of 7.0. Then I ran out of test strips.

I chose not to go to a doctor with this, and instead tried diet. As a result of that my weight dropped from around 72kg to around 69kg, and my waist from 94cm to 91cm. I'm a 50-year-old male, and my height is about 171cm, so I was never massively overweight, only at the high end of healthy. My BMI went from around 24.6 to 23.6. My ideal weight is probably about 66kg so I'm now half-way there.

Yesterday I repeated the glucose tolerance test. This time the fasting level was 5.4 mmol/l, and the 2 hour was 8.9. After 3 hours it was down to 3.4. So this is much improved, although the 2 hour level is still higher than the 7.8 considered normal. During the week I'd done some other tests around normal meals and got normal readings from those. It seems to me I'm making progress.

The dieting regime I chose was intermittent fasting, meaning occasional fasting days consuming fewer than 600 kcals rather than the usual 2500 or so, and eating what you like on non-fasting days. The claim is that fasting puts the body into a kind of "repair mode", and that this is beneficial above and beyond any benefits from losing weight.

So my question is, does that seem plausible in my case? Or would you expect losing a few kilos of weight and few centimetres of tummy would be enough to make the kind of improvement in glucose readings that I measured?
 

GraceK

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Re: How much of this improvement was due to Intermittent Fas

I'm reading a book at present called The Diabetes Miracle by Diane Kress. I'm not very far into the book as yet, but what I have read of it appears to me to make a lot of sense.

Diane is a diabetic and also a medical doctor and she explains that there are two types of Metabolism which she calls Metabolism A and Metabolism B. Met A is what is currently regarded as 'normal' by medics etc, but Met B works slightly differently in the way it processes food which is where diabetes comes into the equation.

She explains that the liver runs on a five hour clock throughout 24 hours - which means that if we fast or fail to eat carbs within a 5 hour period, day or night, the liver performs automatically and releases glycogen which raises our blood sugar levels. The pancreas then responds by releasing insulin to balance the rise in blood sugar. However, in Met B people the pancreas produces excess insulin which then opens excess fat cells where it transfers the glycogen, leaving too little glucose in the blood and too many fat cells - so we get fatter.

So I'm not sure whether that would mean that fasting would work better for PRE-diabetics than it would for diabetics.

Perhaps others could add their views and experiences of fasting and whether it's helped or not. :)
 

Brangdon

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Re: How much of this improvement was due to Intermittent Fas

Thanks. I'm equally interested in non-fasting experience. I suspect it doesn't matter how the weight-loss is achieved.