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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 28 - Come and join us! The threads may be getting on a bit but the new starters keep us young and fresh!

986 replies

BetsyBell · 10/10/2013 10:49

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 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.

NFD = Non fast day

NSV = Non scale victory

Michael Mosley has a website to accompany his book on the subject. Please go check it out, as he's the whole reason these threads started!

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:

Our previous threads can be found by browsing through the fasting section of the site.

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 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 diet!

OP posts:
Emmabryant123 · 13/10/2013 10:23

After a pig out day yesterday doing a mini fast today of 1000 calories.
Breakfast has been just now porridge and sliced banana. Two cups tea.
Dinner is fish pie with heaps of veg which leaves me at 966 calories. So may have a square or two of chocolate. Or a biscuit to bring me to just 1000 roughly after.

JB30 · 13/10/2013 10:24

Well done Lucy, amazing progress and very encouraging.
Nfd started with a naughty but delicious breakfast which I refuse to feel guilty about but will have to do an hours exercise to repent, I did swear blind I'd do a run or something today and since I'm probably going out to eat later, it's probably a good idea to burn a few cals. But for now, I'm laying in bed (lazy mare!) How everyone has a great Sunday, anyone else doing a Monday fast? Off to buy soup for it shortly, my FD saviour

JB30 · 13/10/2013 10:25

Hope every has a great Sunday - stupid phone!

Emmabryant123 · 13/10/2013 10:29

Meant to say 1200 calories today.
So after dinner leaves me at 966 which allows me a biscuit and a cuppa.
Also an apple or another banana if still feeling peckish after.
I had a blow out yesterday.
Subway egg sandwich for breakfast,
Fish in a basket with chips, salad and coleslaw for lunch.
Pudding we went to a Hagen daaz shop in london.
Their puddings are amazing. I had the banana brownie split which was two brownies, sliced banana, two massive scoops banana Brownie ice cream,n whipped cream, chocolate sauce and sliced almonds . Oh dear lol!

Prawntoast · 13/10/2013 10:56

Haven't looked in here for a couple of weeks but great to see everyone's successes scale or non scale. have lost 1/2lb in the last 2 weeks but going in right direction so am happy!
I don't tell other people I'm doing this unless they ask how I've lost the weight, to be fair about half of them have been interested and ask for more details, the others are more "oh I couldn't go hungry like that", I've had no one accuse me of having an ED. My MIL, who was on slimming world and hating it told me I should do slimming world instead! She has since given it up but couldn't do 5:2 as she couldn't starve herself.

MissStrawberry · 13/10/2013 12:52

Thank you Bssh. Flowers I have put on 3lbs and for the first time ever I just shrugged it off, didn't think I was rubbish or feel the need to give up. It is only 3lbs and I will enjoy roast lunch today and fast tomorrow.

Heavy rain all day today so far.

HellesBellesThinksSometimes · 13/10/2013 13:00

Doesn't food taste better when you know you won't be eating loads of it?

Just had a quiche revelation that my (formerly considered as) small slice contained 465 calories and, before 5:2 reset my portion-expectations, I would have had 2-3 times as much but crucially would not have enjoyed it right to the last forkful like I did today's quiche :)

PoshPaula · 13/10/2013 13:18

I'll be fasting tomorrow and will be checking in here to find support from my fellow fasters! Am really enjoying today's food though.... I lost weight last week so am so hoping for continued success.

eggyweggies · 13/10/2013 13:26

Hi everyone!

Since I started 5:2ing and exercising I've lost 2 inches off my waist and and 2 inches off my hips.

I haven't been weighing myself until recently but I did for the first time on Wednesday and was 174 pounds. Just weighed myself again and was 172! Which I'm pleased with. I'd like to lose around 37 pounds.

I just find the fast days so hard! I really dread them and I'm so much less productive on them than usual. I exercise every day and that's a wash out on fast days too. How do you all cope with them?

I'm fasting today. Usually I restrict myself to around 1,400 calories on a NFD- do you think that might have something to do with it?

mttum · 13/10/2013 13:27

Thanks to all who sent kind wishes and hugs - much appreciated Smile.

Time for a blitz on the house now, hasn't been decorated in ten years so a lick of paint needed at least. One side effect of this WOE for me is that I seem to have much more money left at the end of the month (hence available for decorating materials!). Less food bought, less wasted, and no wine during the week - it all adds up Grin

frenchfancy · 13/10/2013 13:29

eggy yes I think you are eating too little on non fast days. You should try and stick to your TDEE. See link in OP. Best is to set your excercise as sedentary, then add on cals for your exercise on NFDs.

Talkinpeace · 13/10/2013 13:32

eggy What is your TDEE (count it as no exercise to give yourself leeway)
then aim for ....

Monday 500 calories
Tuesday TDEE less 10%
Wednesday TDEE less 10%
Thursday 500 calories
Friday TDEE
Saturday what ever you like
Sunday TDEE
no booze at all Monday to Thursday .... and the splurge day can be moved to fit round your social life Wink

DownstairsMixUp · 13/10/2013 13:40

This reply has been withdrawn

This has been withdrawn by MNHQ at the poster's request.

eggyweggies · 13/10/2013 13:43

My TDEE is 1959, which seems excessively luxurious.

So there's no way to "cheat the system" as it were, and combine calorie restriction AND 5:2 for faster results?

eatriskier · 13/10/2013 13:53

eggy most people here find that having a very marked difference between fast days and non fast days is the key to losing weight. No need to eat up to your TDEE if you aren't hungry but there's also no need to deprive yourself either. I have lost weight very rapidly on this woe but would rarely ever be 100 or so below TDEE.

Right, 5:2 I need a word with you. What have you done to me? Last night I had a lovely plan of a roast, strictly on sky plus and one or two wines. You somehow made me satisfied with just a roast and a bottle of water. I couldn't even be bothered to get my posh squash/fake wine out.

eatriskier · 13/10/2013 13:55

rarely be more than 100 or so under TDEE I mean...

Talkinpeace · 13/10/2013 13:57

Downstairs reasonably .... and combined with the two fast days will get you into healthy eating habits.

Eggy the thing to remember is that the two fast days are giving you a deficit of 3000 calories a week - which is just over a pound of weight loss. You do not add back your exercise calories, so that is another pound ...
If you want to be really harsh on yourself, work out your TDEE at your target weight and try to stay within that
but no lower
because this is for life not just for weight loss.
The reason it works is that people re educate their system to eat the right amount of food for their size.

My TDEE is only 1500 .... my weight has been stable for ten months. I still fast for the long term health benefits.

Talkinpeace · 13/10/2013 14:00

eggy Have a look at eatriskiers pictures if you want to see why we say that you do not need to combine hair shirt with 5:2 Grin

mttum · 13/10/2013 14:00

It doesn't seem to work for most, eggy, most people seem to find that eating to around TDEE on NFDs works best - and it's much more fun that way! Personally I don't count calories at all on NFDs, but have given up between meal and night time snacking, and booze during the week. End result? 2 stone lost since starting this WOE at the end of April. I'm very Grin with that!

HellesBellesThinksSometimes · 13/10/2013 15:18

Just going ro butt into the convo with an nsv: I have lost a full inch off my neck since starting 5:2 in july :)

I am also wearing my size 16 jeans because my size 18's are too big Grin

I haven't measured waist or hips because after realising how much they change over the course of the day.

Talkinpeace · 13/10/2013 15:59

MissStrawberry
Forgot to pick up on your utterly mahoosive NSV - that should be a reassurance for all the waverers who lurk and post.
Yes, a 3lb gain can be a blip (same as this cold spring was a blip in the pattern of global climate change)
and you are able to surf that wave and keep aiming at where you want to be.
Post when you shift it (Thursday?) and then whoop, whoop, dance round the room as you are getting your tummy and brain to work together.
Next project : get your DH to realise what a bloody good laugh the new you is Wink

MissStrawberry · 13/10/2013 16:05

I am a bit confused.

Talkinpeace · 13/10/2013 16:09

LOl my dear .... you put on weight and let it wash over you.
After that, anything can wash over you, even your fragrant sons winding you up and your excellent DH working long hours.
You are now strong and nothing will break you.
You are heading towards a place that will let you be an anchor to others:
a good place

I like being an anchor, but my 13 year old son "snuggling" into bed this morning nearly pushed both DH and I out - little sod Grin

MissStrawberry · 13/10/2013 16:20

Oh Blush

I didn't get how I was a good laugh Blush.

DS1 has just had words given. Told me I get 5 days off a week and get to stay at home and do nothing. Went on and on. Acted like a toddler at the table so DH took his lap top off him. DS1 still does not get it. Still giving me entitlement issues so is currently saying he isn't bothered he will go on a school trip tomorrow without a packed lunch so I said fine. And as he said it is my fault he is spoilt DH and I have decided to rectify that immediately Wink. He wanted bacon sandwiches so DH went to the shop and bought the ready cooked crispy stiff. Apparently not what he wanted.

Talkinpeace · 13/10/2013 16:23

Wink you are well along the path. And delighted to see that your DH supports you. As you get more and more control over your head, you and he will have more and more of a laugh and your kids will give you less and less shit.