Meet the Other Phone. A phone that grows with your child.

Meet the Other Phone.
A phone that grows with your child.

Buy now

Please or to access all these features

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.

The 5:2 thread number 36 - Fighting (& losing) the Battle of the Bulge? Eating too much junk? 5:2 is a healthy, sustainable way to achieve & maintain your goal weight. Join our friendly support group!

999 replies

BigChocFrenzy · 14/01/2014 15:27

The continuing thread for those of us following the 5:2 fast or other forms of fasting such as 4:3, ADF, or daily 16:8.
The 5:2 diet was featured on Horizon in August 2012 and essentially requires you to fast for 2 non-consecutive days per week. The other 5 days, you can eat normally - or approximately your Total Daily Energy Expenditure (TDEE - see explanation below). 4:3 is the same except you fast on 3 days in the week. Alternate-day fasting (ADF) is just how it sounds; you fast every other day. 16:8 is another form where you stick to only eating in an 8 hour window each day, therefore fasting for 16 hours each day.
By "fasting", we mean that we keep our calorie consumption very low, around 500 calories on average for a woman, 600 for a man, on those days.
You'll find on these threads we use a number of acronyms. If you're new to the threads, or Mumsnet in general, they might not make much sense.
WOE/WOL = Way Of Eating/Way Of Life. We use this term instead of "diet" as many of us see this as something to do in the long term.
MFP = My Fitness Pal, a website or app many use for keeping track of the number of calories they're eating.
TDEE = Total Daily Energy Expenditure, quantifies the number of calories you burn in a day. This measure is best estimated by scaling your Basal Metabolic Rate to your level of activity. TDEE is critical in tailoring your nutrition plan to desired fitness goals. Here is a link to a TDEE calculator to help you figure out how many calories you should be eating in a day.
NFD = Non fast day
NSV/LSV = Non scale victory/Lifestyle (change) victory
Michael Mosley has a website to accompany his book on the subject. Please go check it out, as he's the whole reason most of us are here!
Lurkers and new starters: please just jump in and post - you'll find a lot of support here and we’re a friendly bunch.
Here is a list of links to get you started with this way of eating. Please let us know if you find a new article or some other information online:
Other Threads
All our previous threads can be found by browsing through the fasting section of the site.
Tips and Links : Another thread which breadandwine has started is a good resource for some of the tips and links that get lost in these big threads. In addition to sharing links, we try to condense some of our top tips for fasting there. Keep in mind, we all do this differently, so these are just tips, not rules. This might be a good place to catch up with us if you're feeling a bit lost!
Inspirational: eatriskier’s thread has some lovely inspiring stories which are worth checking out if you want some motivation to get started or keep going through a plateau. Please add your own too.
Recipes: frenchfancy has a recipe thread over here, please post any low-calorie recipes there so they don't get lost in these bigger threads!
Exercise: bigchocfrenzy has an incredibly informative and helpful exercise and fitness thread for discussion and advice on combining 5:2 with an exercise regime.
Maintaining: If you've been at this a while and are moving on to maintaining your goal weight, there is a thread here to discuss that.
Other links
This is a BBC article regarding Michael Mosley's findings, which was featured on Horizon - link to that programme here.
This Telegraph article comments on the diet and gives a brief overview by Dr Mosley himself, very informative if you're just starting.
This blog post 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.
This link nicely demonstrates that there are many body ‘right’ body shapes and types, because what we are actually aiming for is low body fat for fitness and health.
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%).")
Something to consider if you are currently your ideal BMI: this article 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. (Though anecdotal evidence from these long-running threads may suggest otherwise…)
A BIG THANK YOU to all who have been contributing. Most of us are learning this way of eating as we go along. All of the links above have been posted by others in our previous threads, and they've been very helpful.
A HUGE THANK YOU to Greeneggsandnicht for putting together all this info and resources into one concise OP text, much appreciated by so many 5:2ers!
Come join us, and tell us about your experiences with this way of life!

OP posts:
ToffeeOwnsTheSausage · 20/01/2014 17:24

curveballs - don't comfort eat when you get in and claim it was a NSV.

peplum41 - I hope it works okay.

IHaveSeenMyHat - I am the weight I was when my 8 year old was 2 months old. That is then 7 years of being 2 stone over weight and I was in denial. 1 stone off last year through diet chef. Great but didn't sort my head out. I stone off since August doing 5:2 and my emotional eating is sorted, I am not scared of being hungry and I am not hating myself anymore for eating.

devoncreamtea · 20/01/2014 17:27

Hello, glad to see everyone is motoring away with the monday fasts. I am fasting today too, first proper one, has been ok. Decided not to eat breakfast or lunch, so hadn't eaten since 8pm yesterday. was planning to wait till 8pm to eat - giving 24hrs - but ate dinner with children!!

What is the most important thing - is it time not eating (but eating 500 cals) or overall calories? is 24 hrs preferable to say 12 hr then breakfast; 12 hr then dinner?

mscnile · 20/01/2014 17:29

So, I'm now on 700 cals but calling it a day. Feeling really cross with myself, might just go to bed.

Tiredemma · 20/01/2014 17:32

mscnile-
Ive lost 5lbs over the past two weeks- I say im 'doing 5.2 diet' but in all honesty I havent actually done a 500 calorie day. Ive tended to come in around 650-700. So dont beat yourself up.

zedzedzed · 20/01/2014 17:37

Oh dear curve hopefully you're not too drunk to read this....STOP! You can get nutted tomorrow!

Poor you, that sounds murderous.

The kids are having their mad hour now...they all get opinionated and screechy and I'll often lose my rag at this time (and regret it later)

clarinetV2 · 20/01/2014 17:59

mscnile & tiredemma I think I read somewhere that an FD is supposed to be 15-40% of your TDEE. Somewhere along the line someone worked out that 25% is sort of in the middle of this, and the average TDEE for a woman is 2000 calories (I wish!) which is how the 500 was arrived at. But it's not a magic number, and 700 is probably still within the 15-40% so OK I think. Maybe someone with more experience of IF can say. But I know I read something like that when I was researching! So mscnile you've done fantastically to have an FD it despite being so cold.

Can someone answer a question? Upthread a bit somebody said that your NFDs don't have to reach TDEE if you're not hungry, but need to be significantly different from FDs. Purely hypothetically (because no way can I see it happening to me) what would happen if, say, you didn't feel hungry on an NFD and only ate about 800 calories, and had 500 on an FD before and after? Presumably you'd need to do it several times for it to have an effect, but what would that effect be? I'm just curious, I certainly don't expect to have any trouble getting to TDEE tomorrow.

MazzleDazzle · 20/01/2014 18:11

Lovely to see some SVs! The thought keeps me going.

Curves hope your blood pressure has returned to normal. Have a well deserved cuppa. Hope there is someone waitin for you at home to give you a real life hug, but incase there isn't ((((( ))))).

RavenousRunner · 20/01/2014 18:18

clarinetV2 I expect the effect would eventually be that your metabolism would slow down to try and preserve the small amount of food it assumed was coming every day. My understanding is that 5:2 works better than other regimes because your metabolism stays high due to the 5 normal days - so when you have a FD it really blasts away at your reserves.

I had a bad summer when I was 19 where I only ate 700 calories a day for about three months (cereal for breakfast, soup and apple for lunch, a few bites of whatever my mum had made for dinner, lots of Diet Coke Blush). I lost about 15 pounds in the first three weeks and then nothing more - my body decided this was what it had to work with and clung on for dear life to every calorie. Once I went back to uni and ate normally it was all back in a month. Oh, dopey dumped teenager that I was.

TalkinPeace · 20/01/2014 18:25

Clarinet, ravenous is correct : the fact that you eat a 'normal' amount on NFDs tells your body to keep expecting that level of activity so it seems to strip the calories from reserves (ie that nice 10,000 calorie store across the back of the hips).

My TDEE on a work day is now only 1500 and I do not normally drink in the week so my actual food is normally around 1300, leaving leeway for Wine at the weekend.

mscnile · 20/01/2014 18:26

thanks clarinet and tiredemma, you are both lovely! As I ran at lunchtime I guess I could add those calories in, I don't usually on a FD but might help me feel better today! That would put me nearer to 500. I've cranked up the heating now everyone's home and put my PJs and cashmere hoody on Grin. The fog hasn't lifted here all day, its like being under a freezing, damp blanket.

curveballs · 20/01/2014 18:26

Thanks toffee and zed. Unfortunately no nsv's to claim for me. An email I received reduced me to tears this afternoon. I've not hit the comfort food, but I have used my stress controller and had a drink. I'm fasting again on Wednesday and Sunday, so I am not going to let myself feel guilty. Hmm

curveballs · 20/01/2014 18:27

Thanks MazzleDazzle Smile

mscnile · 20/01/2014 18:28

curveballs sorry you've had a bad day too. Remember, this WOL works because of its flexibility, there's no such thing as a FD fail.

ErrolTheDragon · 20/01/2014 18:36

I had an M&S 'feel fuller longer' steak 'pie' with a pile of curly kale for dinner (DH bought a load of that range, apparently M&S sales of this sort of thing has gone up this month because of lots of people using it for 5:2!). I'll be very slightly over the 500 by the time I've had my bedtime tea, but not too far out. Lots of gravy to drown the kale in so it was a pretty big plateful.

Trying to fast wasn't suiting DH - he's on all sorts of meds for a variety of conditions, but he's doing well calorie-counting instead, which means also he's not eating too many gratuitous carbs.

Breadandwine · 20/01/2014 18:56

About back-to-back FDs, they weren't recommended because Dr M thinks they're too hard, so people would give up - but if you can manage them, fine.

If, on the second day, you just try the 'suck it and see' approach, and have something on standby in case you couldn't manage it, that'd be the way I'd approach it.

But full marks to you Megrim, jumping in at the deep end! Smile (Just seen your later post!)

My DH is a stickler for sell by dates. He binned half of my dry spices . He doesn't even bloody cook!

Mazzle that's diabolical! [steam] My SIL's the same - he'll discard bottled/canned beer if it's gone over dates. I, of course, help him out by taking them off his hands! Grin

AngieM2 · 20/01/2014 19:08

Had a bit of a splurge weekend (started with the champagne on Friday morning)! Had my tea at 5.30 tonight and I'm just off to work, so I think that's my fast started. Might have some soup tomorrow when I get up...otherwise that's me til Wednesday lunchtime.....bring on the drinks!

zedzedzed · 20/01/2014 19:28

Poor curve, I think you did brilliantly and should give yourself a big pat on the back and curl up under a blankie and fume tomorrow instead.

I've skidded home at 400 tonight, which is great, am thinking I may skip brekkie though and see if I can do that 16:8 thing...but I'm pretty excited for tomorrow's NFD dinner whatever time I decide to have it.

Well done to all the FD-ers today, good luck Tuesday people.

ToffeeOwnsTheSausage · 20/01/2014 19:30

I have 75 calories left.

Dinner was yummy but I am still hungry. What can I have?

Poor DH is on the kitchen reading every label Grin.

ToffeeOwnsTheSausage · 20/01/2014 19:33

"I've not hit the comfort food"

curveballs that is a NSV!!!

DottiestDoris · 20/01/2014 19:53

Hi all, I've been quietly keeping up with the thread but feel there's not very much of value I can add.
But just wanted to say that I discovered my most filling fd dinner by far today. An entire tin of canellini beans cooked in an entire tin of tomato, with half a bag of spinach. I flavoured it with chilli and garlic and ravenous, I was still eating it after my dh and ds1 had finished their gammon and homemade chips. I could murder something sweet but apart from that, feel actually fairly satisfied.

Breadandwine · 20/01/2014 20:03

After 24 hours on coffee and water, my veg curry came in at 134 calories. And I'm now full up.

This is the danger time for me now, since I've still got 466 calories burning a hole in my pocket. But if I stay away from the kitchen until my hunger switch is reset, I should be OK.

I'd prefer to do a complete LOF, but my wife does like to see me eat!

MazzleDazzle · 20/01/2014 20:04

Aaaargh! Today was going so well, then I made a huge slab of Malteaser slice and chopped it into smallish pieces. (So far, so good)

Then I ate one, then another and another and perhaps maybe another, though I have lost count (Sigh) and now...

TMI alert...
the poisonous fumes I'm emitting could kill a small animal at 50 paces.

However, all is not lost! A year ago I would have kept going back until there was none left, but thanks to the advice earlier on this thread I put the remaining pieces in the freezer.

I'm off to have a peppermint tea.

Oh well, FD tomorrow. Looking forward to it after today's sugar-fest.

WhenSheWasBadSheWasExhausted · 20/01/2014 20:10

curve sorry work has been crap today. Hope you are ok.

Well I've had a shit day of it diet wise. Am poorly sick gets out worlds smallest violin and have over eaten and eaten complete crap. Hopefully I'll feel a bit better tomorrow, I really need a fast day to make up for the chocolate rest today turned into.

WhenSheWasBadSheWasExhausted · 20/01/2014 20:24

Chocolate rest = chocolate fest

DottiestDoris · 20/01/2014 20:31

whenshewasbad- sorry you're feeling so rough. Hopefully it will shift soon.
From what I've read here, you did the right thing not fasting. You need energy to get better and I'm guessing that if you deny yourself at times like this then the WOL is harder to maintain and it's easier to fall off.
Being good takes energy!