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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:
GirlWithTheMouseyHair · 28/09/2012 22:24

Quite!! Am pretty aware that the days I go over my recommended calorie count it's cos I've sunk a bottle of wine!!

How do you mean about fast days not interspersed with feast days? (tired and thick emoticon)

TalkinPeace2 · 28/09/2012 22:30

LOL
tried to highlight but had had too much wine!
the thing to bear in mind is that a non fast day is NOT a feast day
I rckon I've cut 1000 and DH 2000 calories from our normal weekly intake - its fine to relax on not fast days, so long as that is not 3500 calories - which is the lightbulb that some on this thread have joyfully clicked ...

GirlWithTheMouseyHair · 28/09/2012 22:55

Oh yes right. No I'm pretty sure I'm not going over 2000 on feed days - like everyone else I'm finding my appetite depleted, or at least getting fuller quicker, sometimes I'm still greedy and eat til overfill but it's still substantially less than what I used to - also trying to make sure I eat ENOUGH calories on these days. Ugh. But then 1lb/week is prett good I guess - just wish I could see it!! Patience patience

Knowing me its all disappearing from my face and boobs and not from my bloody tummy and muffin tops!!

rosemarysage · 28/09/2012 23:57

I had an unplanned fast day today as I didn't get to eat until 3pm, and wasn't particularly hungary, so decided to do the fast day today instead of tomorrow. I wasn't as strict as I normally am on fast days as I had some soup for lunch which I hadn't calulated the calories of (but I would guess at maybe 200 calories, if even that) and later some beans and a small beetroot. It was quite an easy fast day as I didn't feel that hungry over the day and actually felt like I needed a fast day, though for the last while nice blueberry icecream has been calling my name from the freezer Grin but at this stage I will be able to resist.

I wouldn't be too bothered if I lost nothing this week as I have lost 8 pounds in 7 weeks so far, which would have seemed impossible for me before trying this method of eating. I am just doing 5:2 now (I did 4:3 some weeks), and possibly will do some weeks at only 6:1, as I am only about 10 pounds off ideal weight so happy to take it slowly now. I can finally fit into jeans I haven't worn for years. Smile

I have only told a handful of people in real life what I am doing, as the whole thing might sound insane to anyone who hasn't seen the Horizon programme.

Next fast day will probably be Monday.

rosemarysage · 29/09/2012 00:13

AGeekswife, I'm not sure if anyone answered your questions so I'll give it a go (but I am just experimenting with this like everyone else so could be talking rubbish Grin).

AGeeksWife · 29/09/2012 06:01

rosemarysage thank you! I'm going to try my first fast day today. I was going to wait until Tuesday and do 5:2 but I'd really like to do 4:3 and I think having a weekend fast day would go a long way to helping my 'it's the weekend let's treat myself' habit I'm in. Yes one treat would be ok but a weekend full is silly and wrong!

I'm so excited, which is crazy but I really think this WOE sounds right for me (and I might even save a bit of money cutting out 3 breakfasts and lunches!)

frenchfancy · 29/09/2012 08:02

Talkinpeace2 I'm not sure why you were doing the calculation, but 2500-800=1700 not 1300.

Quite a difference - That's 3 glasses of wine with leftovers of a square of chocolate! (well it is the weekend)

HappyOrchid · 29/09/2012 08:08

AGeeksWife I too have found that eating only once a day in the evening is the way to go for me. I have a small snack at lunch time, usually adding up to around 60 - 75 calories and the then have a tea of about 350 - 400 calories.

I smugly posted up thread about how well this weeks fasts had gone and then yesterday after doing really well ate 420 calories and succumbed to a small glass of wine. Still counting it as a fast day & won't eat today until lunch so I've done 16 hours each side of my 500 cals.

Hoping to see a real difference on the scales this week, but have already worn a dress that I wore to the Xmas party last year and felt fab in it. Am hoping to get down to pre-holiday / working in China weight by the middle of October.

DH & I have booked a day off work in November to go clothes shopping and I don't want to buy smaller clothes, just to feel good and not a frump.

Eating weekend for me & will fast Monday.

good luck fasters Smile

Aftereightsaremine · 29/09/2012 08:45

I've converted dh, dsis, dm, & dcousin to this made them all watch horizon programme first though. They'd been so sceptical when I started telling me I shouldn't do it so I'm really chuffed they see something in it.

BelinaTheChicken · 29/09/2012 10:25

frenchfancy that's what I thought, I was 300 over, so need to go 300 under today to cancel it out. I stopped eating at 9 o'clock last night, so need to wait till 1.30 to have food today, and as I am child free from 1.30 I will have to eat straight away as I'm planning to go swimming this afternoon, and find swimming makes me ravenous, so will need to eat something before, and take a snack for after.

I have told people at work what I'm doing, but considering two people at work are doing water fasts for a week, mine sounds pretty tame. But a couple of people saw the documentary, and one girl learned about the effects of AF at university, so she seemed pretty positive about it. DH isn't doing it with me (his job is manual, so eats a lot, but has no body fat, and isn't all that convinced by the health benefits, but has been really supportive. Apart from making yorkshire puddings on a fast day, the bastard!

claretandamberforever · 29/09/2012 10:59

AGeeksWay - I have added in a 'moderate' day on a Sunday so that my fasting days are always the same, always through the week. I was going to try and do strict alternate but then I thought bugger that, I want Saturdays to be eating days every week.

I've lost half an inch from my waist and I have only been doing it for a week!!!

GreenEggsAndNichts · 29/09/2012 12:36

AGeeksWife I do 4:3 and fast on Saturdays. You're right, it's a good way to keep the weekend from being full of food. Grin Of course, you can move fast days around, if there happens to be a party on Saturday or whatever. I've actually managed to fast when going out, but that's easier once you've gone through the first week or so and your body is used to fasting.

Fast day today- I'm having a cup of coffee and am waiting for the people who are coming to view our house. (Well, landlord's house, sigh) The drama with our own attempted house purchase is enough to drive me to the Wine tonight. I suspect I shall be having a glass to go with my veg; my calories on my last fast day (Thurs) were under 300 by a fair bit, so I think I can manage a glass along with the same dinner I had on Thurs. :)

OP posts:
MandaHugNKiss · 29/09/2012 17:02

AH, green we completed buying a house yesterday! DIdn't get the keys until 5pm, though, and then when we went in, the extensive work I remembered needing doing seemed a million times worse! By 1am, exhausted and it was a fast day - I was sobbing on DF's shoulder that it had all been a mistake and I didn't want it.

Today's an eating day. I feel much more positive (although still daunted at the size and cost of the project). A heap load of stress on top of a fast isn't ideal (and I really couldn't sleep last night either) but I can't say I actually felt hungry at any point of the day.

Infact, now the shock has worn off... I just wanna sleeeeeeeeep. DS2 is 2.6 and DS3 is 19 weeks though so fat chance (no pun intended!)

GirlWithTheMouseyHair · 29/09/2012 17:24

blimey under 300 greeneggs?! Have to say I do love saving some of my fast day calories for Wine

congrats Manda so exciting for you! Can understand anti-climax though, I was def like that when we got our flat! And with you in the no-sleep club...damn children, who'd have 'em?

Might fast today, not sure yet. Date morning with DH then lunch, but can easily get something for 300kcals or similar in a Californian cafe (bleurgh egg white omlettes!) then just have celery with the family later. Then planned fasts Monday and Wednesday before a 4-day weekend break...

Mum and Dad coming to stay and they're doing 5:2 so have some serious meal planning to do!

pookey · 29/09/2012 23:54

I know this is taking away from the simplicity of the diet but there has been lots of mention on here about eating enough calories on non fast days. I have had a look at the eat more to weigh less thread and decided that I should try and eat my daily calories to maintain weight on non fast days; so just over 2100 acc to scooby website scoobysworkshop.com/calorie-calculator/ . Even then the weekly deficit from fasting would be more than the 15% they reccommend. Tricky thing is going to be eating well and healthily on those days.

As usual I am up late so off with internet and onto dishes and bread making before bed.

GirlWithTheMouseyHair · 30/09/2012 02:49

Bloody Hugh F-W!!! Sashimi salad for lunch so well within 500kcals, then made spinach, cheese and penne souffle for the rest of the family for dinner and couldn't resist a small portion for myself. Was pretty small, alongside a mountain of asparagus so proper stuffed now and prob not actually too bad calorie wise, but going to go for an evening swim to work it off!!

AGeeksWife · 30/09/2012 08:16

Well yesterday went really well! I had a mug of bouillon at lunch and then an innocent veg pot and a yogurt for dinner and I felt ok! Slightly lightheaded at 5pm but not overly so and it was really close to eating by then. Lots of water too.

It really helped to think of today's food to make it worth it so I was glad of that tip from here. Just going to have eggs, mushrooms and toast for breakfast.

GreenEggsAndNichts · 30/09/2012 12:01

pookey You're right. That's why I bring the subject up from time to time; I think it's important to remember to eat properly on non-fast days. Definitely don't low-cal diet on those days, especially if you are doing 4:3 or ADF.

It does feel like it complicates things, I know. If you (not you, pookey, I just mean a general "you:) are new to this way of eating, don't get too stressed about this, just focus on learning to fast a few times a week and work from there. I started this on a whim, the very next day after I read about it, and I've found as long as I focus on being strict on my fast days, the other days work themselves out. I'm still losing weight.

In fact, I'm in my new jeans today. Grin Down a size, and it feels great.

Not a fast day today, am off for Thai food. yay! It's my birthday this week so I'm changing my fast days around to accommodate the cake I'll be making and the fact I'll likely go out to lunch on Tuesday.

Good luck fasters :)

OP posts:
TalkinPeace2 · 30/09/2012 15:17

DH and I are both doing 5:2. We've set our timing so we do not fast at the weekends. Last night had a "normal" Saturday supper but with no booze as we were going out after Dr Who. Felt almost ill : to eat what had been a normal weekend supper. Odd. BUT it shows that this method tells the body the difference between what it needs and what your habits have told it you want.
Blow out roast today - and have LOADS left over for suppers in the week ....

maybe we should repost all of this in the money matters forum as you do save a LOT of money by cutting out snacks and fizzy and eating in a more targeted manner !!

Laska42 · 30/09/2012 15:46

Hi again all, i'mfasting again today . but went out for lunch yesterday, calamari to start then fish chips and mushy peas (and wine !) Fab .. I would have never had done it on the old WW ..

2 new pairs size 10 jeans this week just cheapy 'everyday' ones but the old ones were falling off me! .. feeling so good on this WOE.. Grin

just looking forward to my fasting dinner in a couple of hours .. h/m veg and chicken chinese-y soup ..Its a shame my no calorie noodles haven't turned up yet , has anyone else's?

Hi to all fasters and lucky non fasters! im going to do 4:3 again this week as have people staying with us next weekend.. so there will be lots of food and wine aroubd

reddwarf · 30/09/2012 16:58

Hi all, I haven't been around for a while. I am so busy ATM. I am doing a uni course and I do have weird tummy rumbling issues, so I have breakfast every morning, plus snack to make sure my tummy keeps stum! Then I get home and I pick a lot so have not successfully stuck to my fasting :(

Incidentally, I was at my doc and I asked him about losing weight and he told me I should eat only 2 meals a day., explaining that regular eatingeant regular release of insulin ( forget the exact scientific details Blush but it sounded a similar view to the fasting .

Also it made me wonder about low Gi foods. We're always told they are good because of the slow release, but in fasting we're told the long gaps between food means the body isn't always in digest mode and can go into repair mode, so doesn't low Gi. With slow release just mean that the body is digesting slowly over a longer period and stop it going into repair mode? So is low Gi idea actually wrong or incompatible with the fasting?

GirlWithTheMouseyHair · 30/09/2012 17:07

Laska that's brilliant! what a poster girl you are for this.

reddwarf I was literally about to ask a similar question - and about breakfast particularly. I used to be starving in the mornings and really look forward to breakfast (and usual stuff drilled into me about kick starting metabolism etc) but since doing this I haven't wanted breakfast most mornings - what's everyone's thoughts?

Buggered up the days a bit so this week was the first I've done 5:2 instead of 4:3, and this week coming will prob be 5:2 as well...lots of visitors but thank god two of them are my parents who are also doing IF. Time to do some serious menu planning - 3 Adults on 5:2, 1 Adult who east like a horse, a 10month old who eats anything and a fussy 3yr old. Ugh, headache just thinking about it!

ThatBintAgain · 30/09/2012 17:24

Hey everyone,

Well done to everyone seeing results. Grin

I lost a couple of pounds last week which I was fairly happy with, but turns out I've only managed 5:2 this week, was aiming for more but had a couple of fails. Also TOTM pending and I swear that skews my ability to resist eating. Aiming for ADF starting tomorrow...

frenchfancy · 30/09/2012 18:03

My appetite is definately deminishing. We were out at a car boot sale today, the kids each had a portion of chips and a sausage in a baguette. DH and I shared a sausage in a bun, with no chips. We just didn't fancy any more. Normally I would have eaten 2 sausages + chips.

Fast day tomorrow. Up to now I have been preparing food specially, measuring everything very carefully, but I have some ratatouli in the fridge that needs eating. It has much more oil in than I would use for a fast day, but it seems silly not to eat it, after all it is just vegetables right?? MFP has it down as 50 cals/cup but I know that can't be right.

scattergun · 30/09/2012 18:25

I know there are some other fasting-exercisers on here. I did a 10k this morning having last eaten c. 8pm last night and then had nothing until 5pm today (I'm doing a regular 18 or 24 hour total fast thing, interspersed with normal days). The run was great - definitely finding fasting-runs to be easier and faster. But by 3pm I was knackered. I think next time I'm foolish enough to do that, I'll have a low-carb meal soon after.

Incidentally, I've been booked for a fasting blood test next week (because I'm old and apparently it's part of a routine health check). I was told not to eat anything between 9pm and my 9am test. Hah! Call that fasting? Funny how my perceptions have changed.