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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 20! Officially a score.

971 replies

GreenEggsAndNichts · 20/05/2013 08:27

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 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 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. (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, 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:
CrystalDeCanter · 21/05/2013 10:17

NoFork - I know I'm new here n'all but this is what it says on the fast diet website

Who is advised not to do IF?

People who are underweight
Children
Type 1 diabetics and diabetics on insulin
pregnant or breast feeding mothers,
if you have an eating disorder,
If you are recovering from surgery,
If you are taking prescribed medications we would advise you to see your doctor first, as you would before embarking on any weight-loss regime.

it sounds like you had a frightening experience. I hope yr ok.

Sariah · 21/05/2013 10:24

I think I must be eating way too much on my nfd. I dont weigh myself regularly but can feel the fat. I am fine on fast days and normally ok the day after but my weekends are full of food. Thai takeaway, chocolate fudge cake, roasts, curries, lovely bread, cheeses, chocolate, pastries, cup cakes, chips. Its like I go on a feeding frenzy. I exercise well as in I cycle 25km to work and back most days. At best I am not going to put on weight but I dont think I am going to lose weight as I feel justified in eating what I want after fasting. I should probably count my cals for a few weeks to see how much I am actually eating on nfds.

NoForkNKnife · 21/05/2013 10:47

Thanks for everyone's concern.

The problem with advice for any 'diet' you follow is that it often says unsuitable for diabetics. There are so many treatments and yes, some insulin regimes would be dangerous when combined with fasting. The treatment regime I use us an insulin pump. I am actually encouraged to fast regularly to see if my setting with food are accurate. So, fasting is not a problem.
Yesterday the pump got blocked. A very rare occurrence. But because I was fasting I think it made the aftermath worse. I didn't have anything in my stomach which didn't help! But it in no way caused it. If I was to go in and tell a GP I was following this diet they'd have a pink fit. But if I told my endocrinologist, he would be completely fine with it. Things have come a very long way in the last 10 years and most of the medics haven't caught up!

Right. I'm off to plan lunch! No snacks! No snacks! So I want something special for lunch. Would I be a glutton to bake one of those pop in the oven baguettes? Mmmmmmm. Warm bread....

BetsyBell · 21/05/2013 10:52

Hello noway Smile, Many of us find holding off breakfast makes a fasting day easier - try pushing it back gradually until it turns into lunch! Many people manage with just an evening meal (not me though). Keep busy.

The no snacking on fast days is no problem, it's the NFDs some of us are trying to adjust! Now we've seen how our bodies favourably react to fasting periods we're trying to instil some additional good habits on non fasting days too. Well, that's how see it anyway, others may have their own agendas...

meandmyfour · 21/05/2013 10:54

So, just to clarify...everyone in the 'no snacking' club - are you eating pretty much what you want on NFD's but nothing between or are you still calorie counting. After a good fast day yesterday I've just had a huge and delicious brunch followed by some chocolate but plan to not eat at all now until dinner tonight...sound like a plan?
Disheartened as I'm three pounds up on my new low of a fortnight ago. You're all doing so well!! Envy

silverbeetle · 21/05/2013 11:00

Quick post before I dash off to work.

After a mega carb blow out on Saturday night managed to pile on 3.5lbs Shock in one day.
Then after my initial panic and and some straight talking commonsense from some lovely people on here am pleased to report that have lost 3lb already, doing what I was told Blush.
That's just doing one fast day (yesterday) and a sensible eating day on Sunday.
Interestingly my body still feels too full and bunged up, if that makes sense, wonder how long it will be until I feel normal again?
I'm only eating home made pizza in future, deep pan packaged crap is just not for me.

Oh dear, hope you feel OK now NoFork, agree with others would be wise to check with GP before anymore fasting. Sounds like you had a lucky escape from a hospital visit.

Welcome NoWay Smile

silverbeetle · 21/05/2013 11:09

Opps, our messages crossed NoFork, quite understand about differing opinions of the medical profession, most like to err on the side of caution unless they are experts in their particular field. Sounds like you know your body best and now what the problem was. Really glad you're feeling better Smile

Daisy17 · 21/05/2013 11:18

Blimey - if a healthy middle is half your height I need to lose 14cm!! That seems impossible! Could that be partly saggy muscles? Feel horribly despondent now. In weight terms I only need to lose a stone, really......

Daisy17 · 21/05/2013 11:21

I always have had a pot belly......

frenchfancy · 21/05/2013 11:34

14 cm is definitely possible. I've lost more than 22 cm of my waist doing 5:2.

Whitecat · 21/05/2013 11:43

Wow frenchfancy that is an amazing diminishing waist.

crystal I've been doing this since early Jan. Yesterday was my 30th fast. I've managed to shed 12lbs which is great but is definitely slower than the average of a pound a week.

What is particularly great about these threads is finding out how different it is for everybody. Some are speedy and drop loads of weight really quickly and for some it is slow but is does happen if you just keep going.

Daisy17 · 21/05/2013 11:44

Wow, that's great, Fancy, well done you. I think I might have measured wrong, though - NHS definition of waist is the line between your hips and your ribs. Mr Moseley says around your tummy button, but on a woman shape that's more like hip measurement, isn't it?! I now make it 7cm which seems more doable...... Sorry for the panic, as you were!

fastyspeedyfast · 21/05/2013 12:03

Wow, feel so much better waking up the next morning without any hint of the FD headache (usually it carries on until I eat the next morning). Gonna keep up those cups of tea on FDs from now on!

Whitecate I've been going for about 7 weeks and have lost about 4 pounds, so slow weight loss, but the scale is moving in the right direction so I'm happy. I find it's hard to pin down the exact amount lost as my weight fluctuates 2 pounds up or down during the week. 4 pounds is the most conservative number.

NoWayNoHow · 21/05/2013 12:03

Thanks for the welcome Smile

I am already pushing breakfast through to after I drop DS off at school - so eating about 9:30 which definitely helps keep hunger at bay until about 2 on a normal day, so we'll see how it goes today!

I also amn religious about only weighing myself once a week on the same day at the same time in the same place, as I find my weight fluctuates so much during the week depending on the TOTM and other factors, and I hate to be overly optimistic or find myself despondent.

Itsaboatjack · 21/05/2013 12:14

Well I managed a 4 mile run this morning then came home and did my 100 squats for the 30 day challenge. I'm at work now and my legs are really feeling it. Lots of stretches tonight methinks.

NFD day here so just planning my meals and making sure my calories will be high enough with out the 'snack calories ' for the day.

ponygirlcurtis · 21/05/2013 12:27

meandmyfour that's how I plan to do it. About to have lunch, which I will follow with a rice pudding, and then nothing till dinnertime.

postmanpatscat · 21/05/2013 12:33

Welcome crystal and noway

monster you asked about exercise...I'm 8st 8 now and have exercised throughout 5:2 and onto maintenance. I set my TDEE at lightly active, burn about 500 each gym visit (3x week) and don't eat my exercise cals usually but they are there as a buffer - I think in terms of a weekly deficit rather than daily because if I'm at the gym until 9pm I'm not going to come home and stuff myself! I don't think exercise is keeping me at this weight but it has certainly got easier without 20lbs to drag around!

Had I been in the no snacking club today, I would already have been expelled Blush

monster54 · 21/05/2013 12:51

Thanks ppc...I just majorily struggle for time for exercise!!

I will need to try and formulate a plan. I'm only just in the healthy BMI but I'm wondering if my body is stopping at its comfort zone...

BsshBossh · 21/05/2013 13:25

meandmyfour I'm in the no snacking club and don't count calories at all. I just eat what I want (as nutritious as I can but with some treats) at my main meals then nothing in between. I eat to fullness but do not want to stuff myself. The thing is I tend to skip breakfast altogether - fasting has got me out of the habit - so I'm eating two hearty main meals now: lunch and dinner, nothing in between. Except weekends, when I tend to have brunch, late lunch, late dinner. Still fasting two days a week even though I am at goal weight.

spababe · 21/05/2013 13:38

I'd be very interested to know how people who start off quite heavy have got on. I have been following SW but eating too many syns although my meals are all SW Ok thus my weight has plateaued. I am 15st (embarassed) so I'd like to know if I do 5:2 and eat SW meals and some syns on the '5' days how quickly could I expect to loose weight? I don't mean dieting on the '5' days just eating sensible low fat meals and some treats.

INeedThatForkOff · 21/05/2013 13:48

I've just made cakes with DD and managed to refrain from tasting much of the mixture Grin

meandmyfour · 21/05/2013 13:56

Thank you ponygirl and Bssh...is the no snacking thing new to you both? And, if so, is it helping with the weight loss? Here's hoping..! X

INeedThatForkOff · 21/05/2013 13:57

spababe, tbh if you want to make this work I think you need to leave the diet mindset behind. It's an eating pattern for life, not just a quick fix. I have been arsing about with Weight Watchers on and off for years. It works if you're motivated and strict with yourself, but as soon as you loosen your hold you start to regain weight. It is such a pleasure to leave that behind and try something new.

EagleRiderDirk · 21/05/2013 13:57

spababe I've been doing 5:2 for just over a month. I was your weight at the start. I've lost 4-5lb a week so far. Though we all lose slightly differently so please don't take that as a given.

I'm not sure about combining sw and 5:2. I like that I don't have to deprive myself on this woe. I am making a conscious effort to eat and drink below Tdee on nfd, and am eating more healthily in general. I don't know enough about sw meals. They may just do the same thing!

MummyPigsFatTummy · 21/05/2013 13:59

Hello everyone . I am new to this. First fast day today. Am struggling already and it is only 2pm. Have had a bolied egg and banana so far today. Please tell me it gets easier and also that I will lose loads of lovely weight fast enough to keep me going? I have a BMI over 35 so have lots to lose... Smile