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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.

The 5:2 thread number 35 - A new year’s resolution you’ll want to keep? Try 5:2 - it's not a diet, it's a lifestyle. Whether you want to shift fat, get healthy or discover some missing self control -

999 replies

BetsyBell · 08/01/2014 17:11

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:
Dotty342kids · 14/01/2014 09:19

Morning all!

Amelia your stats are quite similar to mine when I started 5:2ing at the start of Feb last year, though I was 11st 8lbs. I lost roughly 0.5lb per week for the first 4-5 mths, stalled for a couple of weeks, then lost some more and in total have lost 16lbs, give or take 1-2lbs either way depending on what sort of week I'm having!
For the first few months I used MFP to keep an eye on my daily calorie intake on non fast days and found it really helpful. Don't forget, as you lose weight, to recalculate that TDEE as it'll need to reduce accordingly Smile

Peplum thankfully he doesn't cook like that every day, he just has a mad kitchen based day every few weeks. Daily stuff is pretty much my domain so I can control it all better Smile

Yesterday's fast day was going well until an early afternoon realisation that the boiler was on the blink and I was freezing cold. The stress of dealing with that whilst trying to work from home sent me straight into the fridge for chocolate, millionaires shortbread and anything else I could find! So, yesterday's fast day has been "relocated" to today Grin

curveballs · 14/01/2014 09:19

Good luck Gecko, you'll be fine :-)

madhairday · 14/01/2014 09:20

Morning all.

Was pleased when I weighed in this morning - have lost 2lb on first week, so hopefully it will carry on this way - couldn't have done it without this thread, just reading it makes me more motivated!

After fasting all day til dinner yesterday I ate a small stir fry but then felt really sick all evening, is that a normal occurence, or just my body adapting itself to fasting? I think I probably didn't drink enough water through the day.

Also, what is NSV - I read it's non scale victory, is that just when you have got to your goal?

Good luck to all those on FD today!

farrowandballs · 14/01/2014 09:22

toffee I came on last night too on my FD - defo less anger with the pmt this month and less bloating however this morning I was in floods of tears watching Tracey Beaker... !

BsshBossh · 14/01/2014 09:25

Well done Toffee on breaking through the plateau.

ELR that's annoying about the scales. When I bought new scales they put me at 2 lbs more than my old ones but I bit the bullet and recording my weight at the 2 lbs higher. Considering I was going to continue using the new scales in the longterm it was no biggie in the end but bloody annoying at the time!

Right. Have recorded Dr Varady on BBC so will watch that then get an Italian stew on for tonight's dinner then work then go to my mum's for a late lunch (curry!) before school pick up. NFD today.

Good luck today's fasters.

Those who have gained, don't lose heart - you're in this for the longterm. Just remember that you could be eating too little as much as too much...

Dotty342kids · 14/01/2014 09:25

Well done to Toffee and Postman, great losses!

ELR that must be very annoying. If I was you I'd pick the spot in the house that gives you the lowest weight and use that as your regular weigh in spot Grin

ImABadGirl · 14/01/2014 09:26

morning everyone, I buckled last night and had some marshmallows and a few squares of fruit and nut chocolate, weighed in this morning and it hasn't made any difference!

So NFD and will eat 10% less of tdee, I love this woe, very flexible Grin

EarSlaps · 14/01/2014 09:30

toffee, I think a lot of pmt symptoms are supposed to be blood sugar related. Hence, if your blood sugar is more stable thanks to this woe it might help lessen pmt. that's my unscientific explanation anyway.

3ismylot · 14/01/2014 09:35

Yeah I am looking to lose about 5 stone Blush
I am going to try it for a few weeks and if it doesnt work then I will try traditional 5:2 I just want to not have to calorie count 500 a day if I can help it x

zedzedzed · 14/01/2014 09:37

Re my post "I may need a talking to at some point...I feel like I'm going to discover I'm a very silly cult member, brainwashed by this positive thread and shunned by 'sensible society' for adopting this way of eating.

I know I shouldn't care, I know it's not a diet and I know the way I feel, so far, is miles better than on any fecking 'fad' diet over the last 30yrs, especially much better than on a traditional Calorie Restricted diet...but I've been hoodwinked before (Atkins for 9months, plenty of science backing that up, totally unsustainable, what an idiot).

I also know how idiotic and slow on the uptake the mainstream media and medical fraternity can be (you only have to look at the backward and snail-paced rate of change within maternity care and how anything out-with the 'norm' is treated as crunchy and radical despite having centuries of experience to draw on).

Still, I feel wobbly, more than just my blubber would account for."

Thanks Errol and Eatrisk for your replies. Just find all the chatter around 5:2 and ADF, not just on tv but at the school gates etc, is all pretty ill-informed and condescending.

Yeah, hopefully I'll have lost 6stone of 'not fat' too (wow again Eatr and can chuckle up my size 10 healthy-hearted sleeve in a couple of years... just got to find a way to block it all out while at the same time being good at listening to ALL evidence and not just the stuff that chimes with what I want to believe; that'd be faith not comprehension and I'd like to be right about this woe and live like this forever...not just keep the faith sporadically!

ErrolTheDragon · 14/01/2014 09:38

Hello madhairday - well done! Chances are you didn't drink enough - people sometimes forget that a lot of your fluid intake usually comes from food so if you're not eating much you really do need more drink.

I think the idea of 'NSVs' is anything along the way you're happy with other than weight (and tape measure?). Things like being able to wear your old favourite jeans again.

frenchfancy · 14/01/2014 09:45

zedzedzed don't worry about the cult thing. I know what you mean, but I've been doing this nearly 18 months now and haven't changed the way I feel about fasting. Anytime I read about how it doesn't work or people say "I could never do that" I think about how I feel when I put on my size 10 jeans and smile.

I believe I will be fasting for the rest of my life, which I believe will be longer because of it. I believe that fasting has stopped me becoming diabetic and I believe that it will help reduce the risk of arthritis which my DM is crippled with due to being overweight.

Repeat after me "I do believe in fasting, I do, I do"

ErrolTheDragon · 14/01/2014 09:46

'at the same time being good at listening to ALL evidence and not just the stuff that chimes with what I want to believe; that'd be faith not comprehension '

Yes! Absolutely.

One of the things I liked about the original 'fast diet' book was that it was honest about the science (or at that stage, lack thereof) - that it was to a large extent based on a sample size of one (Mosley) and anecdote - it didn't shove in lots of pseudoscience and unfounded assertions.

Lilliput · 14/01/2014 09:48

Weigh in this morning after one week of 5:2 and I have lost 3lbs. I fasted on Wednesday and Friday and tried 'mindful' eating the rest of the week. Fast days are Wednesday and Friday again this week.
9 stone 13lb start weight
9 stone 10lb week 1

ErrolTheDragon · 14/01/2014 09:49

Repeat after me "I do believe in fasting, I do, I do"

Or perhaps 'I will continue to examine the evidence and do the experiment' might suit better? Grin

RavenousRunner · 14/01/2014 09:53

Lovely post-FD morning - 2 pounds down, so nasty weekend weight gain gone, yummy breakfast, good run. Then epic parenting fail: 11 year old flat out refused to go to school - he has Aspergers so I'm used to him refusing to do things but he's never done this before and not been turned round in a few minutes of cajoling/threats. Finally had to leave to take 9 year old to school and myself to work, so left DH to sort it out...DS2 realised halfway to school he'd forgotten his violin. Too late to run back and get it without him being late, so ran him to school, then ran back and got the bloody violin and ran back to school. All while carrying a bunch of heavy files in a shoulder bag which has done my back in. AAAARGH.

At least I must have burned an extra 100 calories or so which will all be going STRAIGHT TO THE WINE RATION this evening. Now to womanfully (I like that) resist the biscuits and make myself a massive mug of coffee.

ErrolTheDragon · 14/01/2014 10:00

Good thing your DS2 doesn't play the cello. You know when most of us say something like 'ran back' in the context of 'school runs' we mean 'drive' ... you actually mean run? Hope the back isn't too bad.

Dotty342kids · 14/01/2014 10:03

well done liliput, great feeling to start off well, though prepare yourself for a slower loss from this point Smile. Enjoy your NFD today!

I tend not to discuss that I'm doing 5:2 with many people as don't want to have to deal with their reactions. If anyone mentions that I've lost weight I just smile and thank them, and if they ask, then say that I fast two days per week and feel great on it. That tends to do the job!

zedzedzed · 14/01/2014 10:03

Yes French and yes Errol am clicking my flabby/ruby heels together and trying not to kill any fairies with my shaky beliefs!

Am sure I will be more certain when/if I weigh in after 4-6wks and there's a loss of some sort while I've been happily fasting and munching below and up my TDEE (not weighing/measuring weekly due to previous obsessive weighing sabotaging me in the past, am using jeans and long gaps between trips to scales so that fluctuations don't feck me up!)

Thanks for replying gals.

Chocupid · 14/01/2014 10:15

Wow well done Toffee you have motivated me... and thanks for the well wishes for today all.

Peplum Don't know what happened to yesterday's fast I just woke up needing McDonald's very strange as I don't normally eat or like it! So I started eating and went on a sugar binge Blush
not even TOTM maybe it's menopause or midlife crisis after all isn't 44 ancient... tut! Confused

Anyway on with the rearranged fast day of today, no sugar cravings this morning so things are looking up!

Good luck cinnamon and all fasters today.

RavenousRunner · 14/01/2014 10:15

Errol if he takes up anything heavier I will buy him two and one can stay there. It's about 3/4 of a mile to school, so not bad, and then only another 15 minutes to my office. I have that 'The Walk' app going at the moment, so at least I unlocked a few extra story segments!

ToffeeOwnsTheSausage · 14/01/2014 10:18

Don't worry Geckos48. It WILL happen.

Just done 38 minutes stepping on the Wii. Had 4 olives and now going to make some mince pies and some bread and maybe some bread.

Currently got tummy ache so not avoiding all the symptoms Hmm.

Tiredemma · 14/01/2014 10:26

im on a FD today so good luck all.

MelanieCheeks · 14/01/2014 10:47

Birdies and other newcomers - start off whatever way works for you. If you need to spread your 500 throughout the day to make it happen, that's fine. You can fine tune as you get into the swing of it.

NSV is indeed a non-sclae victory - can be anything from fitting into smaller jeans, to a compliment, or an improvement in well-beaing. Anything which doesnt involve those pesky liars of scales.

I get really tired in the evening of a FD, early to bed and sleep very well.

And confession time - I gave up on yesterday's FD. Was really hungry after hill-training, DH's korean beef stirfry was gorgeous and so I caved and had a glass of wine with it. And a slice of stollen afterwards.

ToffeeOwnsTheSausage · 14/01/2014 10:47

Earslaps - makes perfect sense. I used to stuff my face with chocolate and use TOTM as an excuse.

Just had a toasted fruit teacake and tbh I enjoyed scanning the car code with my iphone to add to MFP more than actually eating it. It was a bit burnt and I can see immediately eating bread stuff sets off the munchies. I have left over pasta and an avocado to eat for lunch. Any ideas for what else I could have would be great, thank you.

Off to make bread now. Mince pies already in the oven. Getting some water as well.

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