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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! Number sweet 16!

999 replies

GreenEggsAndNichts · 22/03/2013 20:05

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.

Michael Mosley has recently unveiled a new 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 links and tips 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.

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, btw. 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. Sorry if I haven't given credit where it's due, but it was just enough of a job getting all the links re-copied and back into one post.

Come join us, and tell us about your experiences with this diet!

OP posts:
charliegreentea · 28/03/2013 03:30

Fasting day here. Getting one in before Easter weekend! Hope everyone is having a good week.

ellenbrody · 28/03/2013 06:29

Not a full on fast for me, but I will do a mini one. 16 hours, then normal lunch and dinner. I'm playing around with what works best for maintenance, so, this week I'm trying one proper fast then a couple of days of 16:8.
I weigh in on Saturday morning, so I will see if they works. I hope so, as it feels very doable to me.
I love this thread! I check in twice a day, people's stories are so inspiring. Keep up the posting everyone!

HotPanda · 28/03/2013 06:30

I need a bit of guidance please.

I attempted to fast on Tuesday, made it the 16 hours but then over the day ate 900 ish calories.
Same thing happened yesterday.

What should I do now? Try and fast today?
Or have an eating day and fast on Friday?

Either day Is doable in terms of what I am doing.

swallowedAfly · 28/03/2013 06:37

morning all Smile

well i'm back at 11.1. feels like i've been waiting on that break through the 11st threshold for ages now! ho hum. dawning on me that the easter holidays aren't going to make things any easier.

wondering if maybe i could try a proper fast - anyone ever managed two days? DrM had 2 miso soups and black coffee and water on his proper fasts - is that right? i'm wondering if maybe if i booked a day of playscheme for the second day i could manage it? so for example say i ate on sunday right through to the evening then didn't eat again till tuesday evening that would be a 48hr fast.

it sounds daunting!! but maybe it's the next challenge? if anyone has done this i'd really appreciate your advice.

postmanpatseasterbunny · 28/03/2013 06:37

Hotpanda, what went wrong? Too much food, high calorie food or both? On a fast day I don't watch the clock as I'm keeping this as simple as possible, I just have lunch and dinner.

BetsyVanBell · 28/03/2013 06:40

hotpanda so you've done 2 900cal fast days in a row? Have some normal eating days now and when you do your next fast try and work it down to say 700 calories. You'll get there. You should be pleased with your achievements so far, it gets easier I promise!

swallowedAfly · 28/03/2013 06:40

i missed a page again!

morning to those who are up Smile

hotpanda - have you just started doing this? sorry if you are a long timer i get confused by all the names. if you are then it does get easier and i would call those good practice runs/getting used to it fast attempts.

do you feel like you could do it today? or tomorrow? just think which day will be easier for you/more busy.

swallowedAfly · 28/03/2013 06:43

i've just re-read - yes you've done two low cal days in a row.

what you could do if you fancied it is just call this a 16/8 week and do each day this week of fasting for 16 hrs and eating in an 8hr window as you feel you need to eat - as in don't go mad but eat what you need rather than over restrict.

lots that i've read said a good plan is to keep mixing things up so the body doesn't get too settled. so doing 16/8 this week then next week doing 5/2 could achieve that.

up to you.

HotPanda · 28/03/2013 06:47

PostmanPat, erm bit of both. Once I started eating I couldn't stop. Blush

Thanks BVB you are very supportive.

SAF, yes I'm new. In my 2nd week. They were fasts 4 and 5.

Thanks for the support guys, I'm a bit "take take take" ATM, but hopefully will be able to support others in the future.

I think I'll eat today, to reset the mind as it were. I think if I attempt another fast and don't manage it I'll get disheartened. Then I can fast Friday as a fresh attempt without the failed ones hanging over me.

Bramblesinafield · 28/03/2013 07:03

Morning everyone, morning newbies and lurkers. Dropping in again to say well done to the losers and keep going to the plateauers.

I'm now solidly 9lbs down. :) it plateaued a bit when I had a week away, so I've done 4:3 this week and its back on the way download. Easter weekend coming up, so I know we will be having family meals together, which will be lovely.

Friends at work have noticed, which is a real boost, and also in terms of 'right I must keep going!' Husband also noticed, which helped me through my first fast day when I wavered a bit. Having done 4:3 I feel like I could keep going with ADF, but will see how it does.

Does anyone else get cramps with this diet? I've found I've been getting cramps in my feet - unless its the fact that now I've lost weight I'm more confident and wearing nicer clothes with occasional high heels!!

sweetkitty · 28/03/2013 07:10

Well that's my first 5.2 done. Things I have found out, it is doable but is hard at times. The hunger pangs come and go in waves. I found that the fasting was ok but once I had ate I just wanted to keep going.

The scales haven't moved since Monday though Hmm and I don't fancy doing 4.3

Good luck to all the pre Easter tasters.

Bramblesinafield · 28/03/2013 07:13

It gets easier sweet kitty, my first week or so was hard too but once you see a difference it helps to motivate - and you start to understand where the triggers are.

sweetkitty · 28/03/2013 07:41

Thank you Thanks

Pre Easter fasters I meant Grin

BetsyVanBell · 28/03/2013 08:15

Whoop! New low weight to bounce around :) Only took a week that time - not even done that much exercise so I guess those 3 weeks of getting a bit stuck was a plateau aka body weight recalibrating! In high hopes that the holiday won't completely derail things after all.

So for those who are interested that's 10 weeks and 12lbs lost (now at 10stone 4.4 - post-fast weight)

saf your turn next week Wink

Itsaboatjack · 28/03/2013 08:21

Morning all.

Well done saf, did you have no food at all yesterday then? That's quite impressive. I bet you could do two days together. I reckon you'd definitely see that 10st if you could.

Well done on getting through you first week sweetkitty, don't be disheartened though you'll see those scales move soon enough.

HotPanda I would eat normally today and try and fast again another day. Don't worry even those of us who have been doing it a while still fail on a fast day sometimes.

Kids break up from school today so dh and I are grabbing some child free time while we can and going out for breakfast this morning (we're both working lunch).

Good luck all today's fasters.

Dotty342kids · 28/03/2013 08:23

That's great betsy, you must be chuffed to bits!
I've bounced back to 11st 3 this morning after an eating day yesterday. It's driving me slightly mad as that's the weight I've now been seeing for four weeks (other than after a fast day when it's either been 11st 1 or, yesterday, 11st 0).
Ah well, fasting again today, and poss Saturday so we'll see what the next few days brings!

BetsyVanBell · 28/03/2013 08:32

Dotty Your turn next week as well then! It's so frustrating when you're so close to a whole new big number - that was me for about 6 months last year (before I started IF), just took so long to eek down from 11something, but I got there and more, and so will you Smile.

greenfig · 28/03/2013 08:55

Woo hoobvb!!! Hotpanda I would try to relax, enjoy a day or two of normal eating & I bet you will WANT to fast again v soon! You've done really well & you're well on your waySmile
Happy birthday for tomorrow postmanpat Smile Something tells me I may not log in tomorrow!
ellenbrody I'm interested in maintenance news, not that I'm there just yet, or anyone else with views on getting that balance right.
Great to hear about everyones Easter plans & menus. I can't beleive that since I started this woe approx 5 weeks ago I have lost 8lbs & eaten:
croissants, bacon sandwiches, cake, fried chicken & french fries, pizza, saltimbocca & mash, roast pots & yorkshire pudding, sticky toffee pudding & much more!
Some of these sorts of foods I have avoided for over 2 years & yet I've maintained at above my current weight.
Happy Easter everyone & enjoy some family feasts. Next week we can get back to some good losses.

mrschambers · 28/03/2013 09:26

Hello everyone!

I'm new here and have really enjoyed reading some of your posts :)

I'm Helen, 32, two kids (5 and 6) and I've been doing the 5:2 for about the last six weeks. So far I've been LOVING it and losing a steady 1-2 lbs a week.

BUT...I got on the scales this morning after my second fast day of the week (as I usually do) and I appear to have put on about one pound! I know it sounds silly, but it's put me on a bit of a downer as I was so happy to be losing a little every week.

has anyone else had any experience of this? I haven't been doing anything differently than every other week!

Any advice would be really appreciated...and lovely to 'meet' you all X

mrschambers · 28/03/2013 09:28

Forgot to say, I started doing the 5:2 at 10st 8lb, last week I was 10st 1lb but today I was hovering over 10st 2 or 3lbs. (have previously lost 5 stone since I had the kids but have never been able to get below 10st, no matter what i do. It's a real struggle.)

mummyof2girlsx · 28/03/2013 09:42

mrschambers hello and welcome!
I and 31 and have 2 kids ages 4 and 6 so very similar to you! Well done on your loss so far! It can be a bit disappointing to see a gain, but it is only 1 pound and that could be down to something as simple as a little water retention. My weight can go up by a pound or two and then the next week i may lose that again plus an extra pound so try not to feel disheartened Smile

catsrus · 28/03/2013 09:53

Hi MrsC.

I've lost around 30lbs+ since August - now at maintenance - in the last 2 days I apear to have put on 6lb - Smile I know that's not a true weight but a fluctuation so I'm not worried. Just stick with it - you will see these wobbles - perfectly normal!

GreenEggsAndNichts · 28/03/2013 10:11

mrsc don't let it get you down too much. Weight fluctuations happen, even with this WOE. I know it can be disheartening, but I suggest just keeping on with your fast days and it should sort itself out in a week or so. fingers crossed. :) As mummy says, it's very possibly just water retention, or just typical monthly weight fluctuation.

OP posts:
NurseEzzzaChapel · 28/03/2013 10:16

mrschambers, well done on the weight loss so far.

I've been following this WoE almost 7 months and have lost about a stone and a half. There have been some weeks where I've done everything right and stayed the same or gained weight. Last week was the same: after a gain last Tuesday the scales said 10st12.8, so to make sure I was doing it right I anally carefully measured everything and recorded every last calorie on MyFitnessPal. Over the week I had a calorie deficit of 2500 not including the exercise I did and 3300 including exercise, which one would expect to translate to a little bit of weight loss even if not a whole pound. I stepped on the scales on Tuesday morning to see them blinking 10st12.8 at me. I couldn't even claim the scales were broken as my house mate lost 2lb this week.

I'm not disheartened. All I can say is: the human body is a much more complex machine than a calculator. These strange weeks of staying the same or gaining a little happen now and then, even if you're doing everything right. The great thing about this WoE is that it comes with health benefits, so you don't need to feel that your efforts have been wasted if the scales don't move.

Another great thing about it is that it's so much easier to stick to when this happens as you have days you can eat what you want. This isn't the first time I've gained/stayed the same even doing everything right. I just kept on going and the weight started to come off again. It will for you too.

NurseEzzzaChapel · 28/03/2013 10:23

Posted this on the couch to 5K thread but thought some on here might find it interesting too, especially if you've chosen to work out your TDEE based on being sedentary and then eating back exercise calories on non-fast days:


I thought this was interesting from Runners World

What's the Burn? A Calorie Calculator
You can use the formulas below to determine your calorie-burn while running and walking. The "Net Calorie Burn" measures calories burned, minus basal metabolism. Scientists consider this the best way to evaluate the actual calorie-burn of any exercise. The walking formulas apply to speeds of 3 to 4 mph. At 5 mph and faster, walking burns more calories than running.

Your Total Calorie Burn/Mile
Running
0.75 x your weight (in lbs.)
Walking
0.53 x your weight (in lbs.)

Your Net Calorie Burn/Mile (i.e. accounting for the calories your body would have burned just sitting on the sofa anyway - this is the figure you want to use if you want to eat back your exercise calories on non-fast days)
Running
0.63 x your weight (in lbs.)
Walking
0.30 x your weight (in lbs.)

Adapted from "Energy Expenditure of Walking and Running," Medicine & Science in Sport & Exercise, Cameron et al, Dec. 2004.