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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 22! Put down that biscuit - you can eat it tomorrow

999 replies

BetsyBell · 23/06/2013 15:54

The continuing thread for those of us following either the 5:2 diet or the alternate-day fasting diet.

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 what you like, or approximately your TDEE (see explanation below). 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 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 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 calculator to help you figure out how many calories you should be eating in a day.

ADF = Alternate-day Fasting, as it says on the tin, fasting every other day rather than 5:2.

NFD = Non fast day

NSV = Non scale victory

Michael Mosley has a website to accompany his new book on the subject. Please go check them out, as he's the whole reason most of us are here!

I know a number of people lurk on this thread, as this is currently quite popular. Please just jump in and post if you're new- you'll find a lot of support here.

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:

First things first, here are links to some of our previous threads:
most recent, one before that, another one!

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!

frenchfancy has a recipe thread over here, please post any low-calorie recipes there so they don't get lost in these bigger threads!

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.

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

There's a link to the aforementioned Horizon programme here.

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 by Dr Mosley himself, very informative if you're just starting. (I highly recommend this for an 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%).")

Something to consider 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.

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 Greeneggsandnichts for putting together all the 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 diet!

OP posts:
Talkinpeace · 23/06/2013 20:42

Meggy
its the concept of only eating within an 8 hour window of each day
which generally means skipping breakfast
but having lots of fluids ...

SoTiredAgain · 23/06/2013 21:02

So I did my first 16:8 today. Mmmm. Not sure. I actually found it harder than a fd where I just eat in the evening. I was impatiently waiting for 1 pm to come round so I could scoff my face eat.

However, I did track on mfp and it shows that I still have 404 calorie deficit. Smile

Just a quick question about it. The 16:8 is for the health benefits right? And not for the calorie deficit? I would, however, find it very hard to scoff 1584 calories (todayTDEE) in a 8 hour window.

I think I will leave 16:8 for this week, and see how my weigh in goes on Friday. I'm just a bit worried, I guess, that I will not get enough calories as I am also not eating my exercise calories back.

Does that all make sense?

akarucker · 23/06/2013 21:39

Can't wait for FD tomorrow! Bring it on!!!

BsshBossh · 23/06/2013 21:48

INeedThatForkOff if I do 16:8 then I generally do it 5 days a week excluding weekends. But like all IF, it's flexible and totally up to you.

SoTiredAgain I don't count calories so not sure how close under/over to TDEE I am if I do a 16:8 day but I guess it's up to the faster: if s/he's doing 5:2 also then no need to eat below TDEE and just focus on the 16 hour fasting health benefits; if only doing 16:8 and needs to lose weight then s/he'll need a deficit each day which is easier in a restricted eating window. Again, it's all so flexible.

SauceForTheGander · 23/06/2013 22:03

Thank you for such thorough introductions and posts.

I've been meaning wanting to do this diet since I saw horizon. I've got a six month old and have another 7lbs to lose. At least. Ten if I want to really feel good. I am breastfeeding but hoping a 6:1 or 5:2 with a 700 calorie limit won't impact on my breast milk. I think there are other bfeeders?

I did ask on the live thread about BF and Michael Mosley advised against it but I think I'm sleeping enough to cope now..... Let's see .....

somewherebecomingrain · 23/06/2013 22:14

Marking my place. Ninth fast day tomorrow. After four weeks I've dropped about 4lb and my waist is an inch smaller. My shorts have also fallen down. Starting at approx 12.3 I've seen the elevens.

I find fast days very hard between about midday and 7pm. I eat at around 1pm and then 3pm. if i wait till the evening then from 3 to dinner time I am beside myself. Even so I feel very agitated and irritable. At around 7pm it subsides as I know all I have to do is get my baby girl down and then go to sleep myself.

Not sure how long I can continue therefore - may go down to 6:1 until baby girl is starting to wean and breast feed less. However I do feel more energetic and less greedy on NFDs - I just feel better.

Anyway this thread really helps - I'm lurking like crazy, you are all very inspiring, the enthusiasm is infectious.

May post tomorrow if resolve is poor. Planning the aubergine curry from the official 5:2 cookbook. Other than that dunno. Good luck everyone else.

somewherebecomingrain · 23/06/2013 22:28

Hey sauce crossed posts. I'm breastfeeding an 11-week baby and have a stone and a half to lose. I give myself 650 a day - a quarter of my 2000 TDEE and a quarter of my est 600 a day milk output (she's a huge baby).

How did you get to 700?

If anything my supply got better when I fasted.

postmanpatscat · 23/06/2013 22:30

Good luck to tomorrow's fasters, I won't be joining you! I ate enough to sink a battleship yesterday but that followed on from Friday's fast so I'm not worried. Just back from the gym so have undone today's damage too. Attended a confirmation this morning and there was cake afterwards...as my friend's DD cut into it her big sister burst into song - trouble was, she sang the first line of 'happy birthday to you', realised no-one else was joining in and then remembered it wasn't her sister's birthday at all, it was her confirmation!!

ELR · 23/06/2013 22:43

Hi all, thanks for the new thread betsy love the title!
Not fasting tomorrow as out to breakfast with a friend and then it's my friends sons birthday so going over for birthday tea. Will fast Tuesday and Thursday next week.
Good luck everyone tomorrow.

SauceForTheGander · 23/06/2013 22:45

somewhere 700 is a guess! I need to do some maths clearly!

Interesting about increased supply.

INeedThatForkOff · 24/06/2013 00:53

Sauce, I also found by supply increased (it subsided on WW). However with two DCs, neither of whom sleep well, I've found 5:2 too much and an giving 16:8 a go.

Tortoiseonthehalfshell · 24/06/2013 03:13

Thanks everyone who was so encouraging on the last thread and put up with my whining! Really, it's as simple as this: all the good habits that FDs were creating on NFDs (ie., not being afraid of hunger, not bothering to snack, drinking less) had slipped, and also I have only managed one FD per week for the last two weeks.

And today I am 61.5kg, which is roughly where I've been for the past month.

So: I have learned that in winter, with associated limited exercise, having recently weaned a child, doing 6:1 and eating whatever I want, I can maintain. This is excellent news! And now the sun is out and I am back on the proper wagon, because I'm going to get to 57kg if it kills me. I'm going to log everything properly for a while, and get serious about hitting my fitbit goals again.

(Thanks for the soup rec, Crystal, that sounds completely delicious)

aka I'm so pleased for you that going to 5:2 is working. ADF sounds unsustainably tough, this is a much better plan.

Moominsummermadness · 24/06/2013 06:19

Hello all, have been back at work for a week, so it's been manic and not had time to post.

Had done really well, and got down to 57.1 kg, so was really happy. Did 16:8 all last week, until weekend, but only ate a bit over TDEE yesterday. Have just weighed in- 59kg!!! Not happy. Think I need to get back on the wagon, and go back to 5:2. I feel a bit confused, I've still had a big calorie deficit over the week, so in theory, I should have lost at least a pound. I don't know what I've done wrong! Hoping it's temporary fluid retention!

FD for me today- got a jar or coffee and some bovril to take to work.

BetsyBell · 24/06/2013 07:19

Morning folks, I can't help thinking that Monday is not a good day for a weigh in... I recommend waiting until after a fast day which will see off any excess fluid retention related to processing the extra weekend sugar and wine.

OP posts:
somewherebecomingrain · 24/06/2013 07:39

I don't know if I can do it. I think i need a break. Like ineedafork I think I might just do 16:8 for a bit. Or 6:1. My body is saying no today. It must be my greedy baby. Goodness knows how I would have coped in the palaeolithic era!

I do love this woe but I don't think I've got myself to a place where it is sustainable. I do feel its ok to stop and start. I haven't failed, I've lost weight, I'm just taking a break.

Has anyone else stopped and started again?

Bramblesinforrin · 24/06/2013 07:50

Morning. fD. Very overindulgent weekend, so bring it on!

(Also have had to buy smaller knickers!).

BetsyBell · 24/06/2013 08:11

somewhere The beauty of the WOE is that you can stop and start whenever you like. Plenty of us have breaks from it for one reason or other.

tortoise maintaining in the winter is a victory in itself! I finally saw a little shift downwards this weekend after weeks of maintaining - stepping up the exercise a bit and being more careful in the week (ie no booze on weekdays) has been the answer for me. Had a lovely indulgent day yesterday so no back on the wagon starting with a fast.

Brambles Excellent nsv!

OP posts:
BsshBossh · 24/06/2013 08:16

Morning fellow Monday fasters :) I reached goal weight in April and have maintained successfully for the last 2 months, getting used to my new weight and enjoying the increased energy and the nice clothes I can wear now. But now I want to lose another 10lbs. So I am back in weightloss mode and strict 5:2 again. Am strangely excited to be back on it!

BsshBossh · 24/06/2013 08:17

Oh, and I always weigh in the morning after the second weekly fast (for me, Friday morning). It's the general downward trend over weeks/months that's important.

Dotty342kids · 24/06/2013 08:44

Ineedthatforkoff I love your ideas of inspiration pics of before / after photos, hairstyle ideas and exercise regimes that you want to try. Sounds brilliant and very motivating!

BssBossh me too. I treat Monday's fast as undoing the weekend's damage and Thursday's fast as the one to encourage a bit of weight loss. At the moment I'm definitely over eating on NFDs so need to take control of that else each week I'm losing and gaining the same couple of pounds Smile

Anyway, fast day today and first pint of water on its way down!

LikeaHurricane · 24/06/2013 09:23

Hi everyone! Fasting today, good luck to everyone else, hope its a good one.
Bouncy up, bouncy down. I find it quite interesting really as I am still shrinking and am now wearing clothes I couldn't wear two months ago when I was the same weight. For all you other bouncers/ stallers, having done this for just coming up 7 months I have learnt to appreciate that the scales are only part of the story and I have trust and confidence in this wol.
Had shed loads of wine and yummy food and chocolate over the weekend but I've always done that pre 5 to 2. I am ready for a day of cleansing and natural fat burning.
Betsy Thanks for the new thread and also for your lovely encouraging posts which I have enjoyed reading whilst lurking for months x
Have a great day all.

frenchfancy · 24/06/2013 09:45

WARNING DO NOT OPEN THIS LINK IF YOU ARE FASTING TODAY

betsy Chocolate Hazelnut and salted caramel tart It was utterly delicious. I shall definitely be making it again.

Crunchymunchyhoneycakes · 24/06/2013 10:37

Fasting today, have work this afternoon so will just hold off eating till I get home. Have made myself chicken and rice soup to have when I get in with leftover chicken breast from the roast chicken yesterday and some carrots and celery. I'd rather save all my calories till then and be able to have some carbs in my dinner!

So last food was last night about 9, will eat my 500 cals tonight about 5.30/6pm then not till breakfast Tuesday so is that right? 20 hrs no cals, then 500 then another 14-16 before breakfast?

Dotty342kids · 24/06/2013 10:48

crunchy yes, that's right about how and when you you eat your cals. Sounds like a nice dinner for tonight. I'm having Linda Mcartney lentil cottage pie with vegetables for mine Smile at about 6pm. So, like you (I was still scoffing crisps at 9.00 last night!) that'll be a good 21hrs fast which is pretty good.

ELR · 24/06/2013 10:56

tortoise that's happened to me too all the good habits seemed to have gone! It's quite disheartening but I know Icahn get the good habits back so am just carrying on and if I don't loose at least I'm maintaining and that's got to be a good thing right?
dotty that's a good way of looking at it damage from the weekend for Mondays fast then Thursdays the weight loss fast!