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Fasting / 5:2 diet

Talk about intermittent fasting and 5:2, including what’s worked for others. Mumsnet hasn't checked the qualifications of anyone posting here. You may wish to speak to a medical professional before starting any diet.

5:2 Diet Thread: Part Four! Sit down, have a cuppa..

983 replies

GreenEggsAndNichts · 20/09/2012 22:36

The continuing thread for those of us following either the 5:2 diet or the alternate-day fasting diet. Both are two versions of Intermittent Fasting, which you can read more about here.

The 5:2 diet was featured on Horizon recently, and essentially requires you to fast for 2 non-consecutive days per week. The other 5 days, you can eat what you like. Alternate-day fasting is just how it sounds; you fast every other day. By "fasting", we mean that we keep our calorie consumption very low, around 500 calories on average, on those days.

Here is a list of the links we've gathered so far about this diet. I hope I haven't left many out, but it was a 40 page thread! This is a good start for anyone, though:

First things first, here is a link to our previous thread, which we've outgrown. Lots of good support and ideas still to be found there. Here is the thread before that..

Here is the link to the BBC article regarding Michael Mosley's findings, which was featured on Horizon.

is a link to the first part of the aforementioned Horizon, subsequent parts of that episode are linked on that page.

A blog post here gives some of the scientific explanation for why this way of eating helps you to not only lose weight, but improve your all-around health.

A Telegraph article which comments on the diet and gives a brief overview.

A study discussed here gives commentary specifically addressing the effect of this diet on obese people (both men and women), with regard to both health and weight loss. ("After 8 weeks of treatment, participants had an average 12.5 lbs reduction in body weight and a 4 cm decrease in waist circumference. Total fat mass declined by about 12 lbs while lean body mass remained relatively constant.) it also mentions "Plasma adiponectin, a protein hormone that is elevated in obesity and associated with heart disease, dropped by 30%. As did LDL cholesterol (25%) and triglycerides (32%).")

Important link if you are currently your ideal BMI: this appears to suggest the benefits for women at a lower BMI might not be seeing the same health benefits that are found on men at their ideal BMI.

And for those already fasting, here is a link to 100 snacks under 100 calories. :)

Another food link, here is a link to the BBC Goof Food site, with a list of low-calorie soups.

We often mention basal metabolic rate (BMR) here. This refers to the amount of energy (calories) a person uses when at rest; so, the basic number of calories a person needs to stay the same weight. This number is often quoted as being 2000 calories for the "average" woman, but of course is different depending on how tall you are, how much you weigh, etc. Here is a calculator which will easily help you to find out what your BMR is.

A BIG THANK YOU to all who have been contributing, btw. Most of us are new to this diet. All of the links above have been posted by others in our previous thread, and they've been very helpful. Sorry if I haven't given credit where it's due, but it was just enough of a job getting them all in one post this afternoon. wink

Come join us, and tell us about your experiences with this diet!

OP posts:
BettyButterknife · 22/09/2012 22:51

Hello again everyone

I've completed two weeks of 5:2 and have managed to lost 4 pounds and put on 3! :(

BUT I have been taking the 'whatever you want' bit literally and eating like every meal is a four-year-old's birthday party.

Can I ask your help please? I obviously need to regulate my 5 days but I just need a sanity check as to what level is a good idea.

I am 5' 6", 11 stone 6 lbs (160lbs), and I do 45 minutes of circuit training 3x a week, plus I walk 2 miles into work and back 3x a week (total 12 miles). Just working out my BMR which seems to 1496. But I can't decide which figure to use to work out my Harris Benedict Equation - lightly active (light exercise/sports 1-3 days/week) gives me a figure of 2057 whereas moderatetely active (moderate exercise/sports 3-5 days/week) gives me 2318. Say I dropped these figures by 20% my feast day calorie limit would be 1645 or 1855. Is that right? Do you think it's ok to put some in the bank for other days as long as it evens out over a week? Say 3 of the 5 feast days at 1500 allowing 2 (weekend!) at more like 2000-2500? Am a total greedy pig.

Just really need to get this straight in my head so that I can try and sort out the damage I've done over the past 2 weeks and get back on track. Would really appreciate everyone's help.

Oh, and first fast day was hard, days 2 and 3 much easier, day 4 I made the mistake of trying to factor in 2 lattes and it was all downhill from there. Note to self: sugary, milky coffee is not really your friend!

pookey · 22/09/2012 23:08

Hi Betty I am struggling a bit with non fast days. today I really didn't fancy the choccy biscuits everyone else had or ice cream but once I had a piece of choc found it hard to stop (totm is inimment(SP?) though ). If i could kick snacking on non fast days I would be on to something. Def seems to be a trend emerging of either eating within a narrow time frame on fast days or very well planned and healthy low calorie meals (I am too lazy for that approach but it sounds healthier). Glad I am not the only one avoiding telling people in rl about this woe.

pookey · 22/09/2012 23:12

sorry and to address cals Bettybutterknife I don't exercise but the calories you mentionwd seem to make sense, I had prev kind of worked out it would be sim to eating 1500 everyday with the advantage of you metabolism being challenged by diff eating patterns?

pookey · 22/09/2012 23:17

Sorry just had a look at fast 5 which was recommended recently and thought this info on weightloss to be expected on their site was interesting

"Expect zero weight loss in the first three weeks, which is the adjustment phase. You may even see weight gain during this period due to compensatory overeating. Weight measurement during this time is not recommended, but many people can?t resist, so don?t expect a loss. Three weeks after starting the Fast-5 program, you should see an average of a pound per week loss. That means over the course of four weeks, you should see four pounds lost, but the loss may not be evenly spread from week to week; it can be two pounds one week, none the next, then two again, and so on.
Some people see more rapid weight loss, even in the first three weeks. That?s not a problem, but may not be seen by everyone, and is less likely for someone who?s already been maintaining a low-carb diet. An early loss of several pounds early is likely to be mostly water, so if you see a large early loss, do not expect to see the same rate in later weeks"

ThinkICan · 23/09/2012 03:47

Is sugar free gum good to stave off hunger pangs or will they make you hungry instead because of the chewing? What is your advice?

TellMeLater · 23/09/2012 07:23

After 7 weeks of trying. I'm back to my lowest measurements. With a combination of low carbing, 5:2 fasting, running and resistance training. Oddly it's all come off in the last week. Monday I weighed in at 64.6kg (after a heavy weekend away with much eating and drinking), this morning I was 61kg but more importantly the tape measure was playing ball and I have lost an inch off my hips.

This weight loss malarky really doesn't work in a linear fashion for me, it used to when i was younger but now it seems to make no sense, it works in fits and starts, no loss for weeks and then a massive fall. Very confusing.

Dosey · 23/09/2012 08:22

Morning ladies, well a fast day today for me and I feel ready for it since I have had a few bad days. I am struggling at the moment on my feed and fast days so I am trying to stay positive and busy today.

Tellmelater well done with your loss and your decreased measurements [smilie]

Thinkican not sure about the gum thing, I think it would make me feel more hungry

worldcitizen · 23/09/2012 09:53

Tellmelater congrats that sounds fantastic!!!! Oh what would I give to be 61kg againEnvy

Bordercollielover · 23/09/2012 10:05

Hi all, still plodding along. I have lost about a stone now since early August. I am pleased with this as I think that too fast a weight loss can be harmful with regard to the release of toxins that were stored in the fat. In terms of volume I have reduced by 2-3 clothes sizes and actually have a waist appearing from the blubber! I have gone from Obese to the top end of overweight according to the BUPA BMI calculator although this does not differentiate between men and women which seems odd.
I have a query: several people on this thread have referred to a 16 hour gap between meals. Was 16 hours mentioned somewhere as an optimum fasting period? I seem to have missed that information.

CrackerSnacker · 23/09/2012 10:08

I'm inspired & joining you all - 1st fast day today - only water and a tea so far!

However, having to fight myself from habitually pinching a shreddie/raisin from my 2yo. Any tips for this? My DD is often snacking on something moreish .

wildstrawberryplace · 23/09/2012 10:13

I think you are supposed to leave at least 16 hours between your last meal on your feed day and your first food on the fast day, because 16 hours is when your body starts to go into repair mode, which is what you want. If you can go longer than 16 hours, so much the better.

Bordercollielover · 23/09/2012 10:27

Am I misremembering the Michael Moseley documentary? I thought that one of the scientists said that low protein, plant based foods are the best choices for health benefits when fasting? Although I agree that grain based foods are not good for those of us who then suffer the consequences of the insulin/blood sugar cycles, I took this to mean that we should aim to eat cooked and raw vegetables ? I have noticed posts recommending protein based foods for fasting and wonder if I have got this wrong?

GreenEggsAndNichts · 23/09/2012 10:42

Bordercollie Eat the diet which suits you best. Moseley did a mostly veg diet, afaik, but a lot of people on this thread are eating different combinations of foods. Some are low carb because that suits them; others are not.

If you're doing this for weight loss, which many people here are, the main stipulation seems to be that you eat 500 calories or less on fast days. The studies I've quoted in the OP mention that test groups who went on this diet ate a varied diet of about 40% carbs, 20 % protein, etc, and still lost weight.

You will see many of us suggesting that people not eat many refined starches on fast days. That's because even those of us who do not low carb admit that they stimulate hunger, so are counter-productive on those days. :) However, I think most people find that out for themselves.

My fast days consist of veg and veg-based soups, fwiw. :)

OP posts:
Bordercollielover · 23/09/2012 10:52

Thanks greeneggs. (Don't know how to make the name bold on iPad). I am a vegetarian anyway but deliberately incude higher protein sources of plant protein on eating days. I don't eat grain based foods because that is what, in my case, put the weight on in the first place. What confused me was the mention of deliberately eating animal based protein foods when fasting as I thought someone on the programme had specifically said to avoid those when fasting if you want to go into cell repair mode? I may well be not remembering correctly but I have watched the programme so many times I can't bear to see it again so was hoping someone on here might be able to confirm this or put me straight if I got that wrong.

Skinnyeye · 23/09/2012 11:08

Cooking up storm today in preparation for this week's fasts. Got a busy week ahead and I don't want to give myself any excuses for not fasting. Last week was a bit hit and miss so want to get back into routine. Good luck to all you brave Sunday fasters

LookBehindYou · 23/09/2012 12:09

Bordercollie yes, the scientist said plant based is best. This has been repeated in most over stuff I've read about 5:2. They also say that you should eat as good quality protein as possible - not necessarily meat based. Meat protein has lots of benefits but also increases the ageing hormone and prevents cell repair and is hard to digest. Hasn't stopped me eating my steak though ;-). I used to eat a lot of veg but have just about doubled it and am trying for three or four vegetarian dinners a week.
Greeneggs would love to have your soup recipes. Mine always seem to taste the same, regardless of the ingredients!
I see some big losses upthread. Congrats everyone.

MandaHugNKiss · 23/09/2012 13:01

Really chuffed for you TML - especially given you were so close to quitting not long ago!

Eating today... but as yet nothing but coffee has passed my lips. I may even hold off until dinner as we're going out and it's going to be very calorific. I should imagine I will do at least 1800 on that, possibly a little more so although I won't eat all day, it still won't be a low cal day.

ThinkICan · 23/09/2012 13:57

Was reading about a program called 8 Second Secret where you do interval training for 20 mins thrice a week and lose oodles of fat and whatever. Has anyone tried that?

worldcitizen · 23/09/2012 14:16

I haven't heard about 20 minutes, but have heard about 50-60 minutes. And yes, it's been strongly recommended by my doctors and know women who lost massively weight/fat tissue when combined with change of eating habits.
But know it only as going to specialised gym for this, and where I live the next one is inconveniently located and I know it wouldn't be realistic for me to sign up.

GreenEggsAndNichts · 23/09/2012 14:53

I can highly recommend Jillian Michaels' DVD which features 20 min bootcamp style workouts if you can't make it to a gym. That DVD has 3 levels of difficulty, so if you're coming in not having worked out in a while, you can be eased into it. They are proper workouts; no dancing around, and if you do them correctly you don't have any downtime. But, it's 20 minutes, as she says, if you're wanting to get a good workout in 20 minutes you can't phone it in. :)

(I don't talk about working out much here at the moment because I technically am still waiting for clearance to work out again after having a blood clot in my leg! Strangely, I am quite active, and her workout DVDs were in regular rotation when I was diagnosed, so I'm still waiting for results of tests to see what might have caused it. I'm still active, just have obviously been told to avoid cardiovascular routines for the moment. End of rambling, sorry..)

OP posts:
worldcitizen · 23/09/2012 14:59

Oh thanks, I know here from America's biggest loser...

Strangely, I have never considered a work-out plan at home. For some reason I didn't think it would work to get fitter and lose weight that way, but thanks for recommending it, seems to have lots of positive feedback too.

MandaHugNKiss · 23/09/2012 15:02

Ah, the high intensity thingy majigger exercise routine that,so long as you're not genetically a 'non-responder' should produce results?

Yes, well, I do believe our friend Dr.Moseley espoused this method too! Lemme check with Google, I'll be right back...

Yes, here it is! He also did an horizon programme based on this experiment 'The truth about exercise'

MandaHugNKiss · 23/09/2012 15:06

Oh, and pre my last pregnancy but one, when I was slim and toned but 'unfit' I tried the Shred... after the first time I could barely walk the next day! Yet tried to power through the second one. Nope, had to give up. It felt so harshly like punishment I just couldn't do it.

But I know many people, including many unfit people, do awfully well shredding. One of those 'give it a try, you've got nothing much to lose' things...

worldcitizen · 23/09/2012 15:12

Thanks MandaHug

claretandamberforever · 23/09/2012 15:54

Yesterday felt really strange being allowed to eat up to 1900 calories. It felt like loads, and that I was constantly eating.

Anyway I got weighed (which I've been told you shouldn't do after an up day but I wanted to see what the damage was) and was delighted to see I'd lost 0.6lbs since the previous day.

On a down day today which I actually strangely feel more comfortable with. I'm happy with the way I look at the moment so the urgency to lose weight quickly has gone, I'd still like to lose another 18lbs though but I'm happy to do it slowly. I hope this way of eating works for me

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