5:2 Intermittent Fast Diet

Is anyone doing the 5:2 diet, and if so how are you getting on?

The app here doesn't like it at all and gives you into trouble on your 500 calories days!

I spoke to my doctor about it when I was there about something else and she said there was no reason for me not to try it. She also said it was one of the best diets around just now in terms of the science behind it and it really does work if you remember to be sensible on your non-fasting days.

I had to buy a new specialist cookbook though. The first day I tried fasting I thought I was being super good, but the little I did eat added up to 704 calories. Oops...

Laura
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Replies

  • MKEgal
    MKEgal Posts: 3,250 Member
    Use the search function. Lots of threads about it, lots of people explaining why it's not a good idea.

    Basically, you punish yourself for 5 days, let loose for 2, and undo any progress/deficit you had.
    Better to eat normally, at a slight deficit, all along. That's maintainable.
  • MKEgal
    MKEgal Posts: 3,250 Member
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    The one I am trying is the other way around. You fast for two days and calcuate a daily intake for the other days based on your gender/height/activity levels. (Mine is 1617.)

    I'm new and haven't had much luck with the search function.
  • flinx1241
    flinx1241 Posts: 2,168 Member
    MKEgal wrote: »
    Use the search function. Lots of threads about it, lots of people explaining why it's not a good idea.

    Basically, you punish yourself for 5 days, let loose for 2, and undo any progress/deficit you had.
    Better to eat normally, at a slight deficit, all along. That's maintainable.

    Always love those off-the-cuff, uninformed answers that crop up in answer to this question...

    For starters, it's 5 days of eating at your TDEE and 2 days of "fasting", not the other way 'round.

    As someone who has been doing this for a year and a half (actually as 4:3 - low cal on Mondays, Wednesdays and Fridays - in the interest of full disclosure) and has lost nearly 100 lbs at it, I would attest that it is absolutely maintainable IF it's the sort of thing that fits your hunger triggers / ways of eating. For me, it absolutely does. But in the end it's simply another way to put yourself into a calorie deficit, so it's not a magic bullet...

    By now, most posters on here know enough about it that they don't "explain why it's not a good idea", and those who do generally don't sound informed at all.

    Check out the 5:2 group on here if you're interested. Feel free to PM me if you have any specific questions.
  • Urban_Princess
    Urban_Princess Posts: 219 Member
    i'm curious but how many calories do you eat on the 2 regular days?
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    Hi Flinx. Thank you! I haven't been able to find any groups. I'm struggling to navigate this website. Could you paste a link or something?

    Urban Princess, my regular day goal is 1617 (5ft4, sedentary). There is a calculator at:

    http://thefastdiet.co.uk/how-many-calories-on-a-non-fast-day/
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    (But as Flinx says, it's *5* regular days, not 2.)
  • PikaKnight
    PikaKnight Posts: 34,971 Member
    MKEgal wrote: »
    Use the search function. Lots of threads about it, lots of people explaining why it's not a good idea.

    Basically, you punish yourself for 5 days, let loose for 2, and undo any progress/deficit you had.
    Better to eat normally, at a slight deficit, all along. That's maintainable.

    Um no. Have you actually read about it?

    Yes, for 2 days you eat very low (around 500 cals) but the other 5 days are higher calorie days that make up for that low amount. Whether you eat "normally" or doing this method (as 5:2 is just a different way to eat, not a diet), the weekly calories are still the same amount.

    For example. If, normally, you were set at 2000 calories (whether to maintain, lose, or gain) daily, that would be a total of 14,000 calories for the week.

    With 5:2, it'd be 500 calories for the 2 low days and 2600 calories for the 5 days. Which would still bring your total to 14,000 calories.
  • flinx1241
    flinx1241 Posts: 2,168 Member
    edited June 2015
    i'm curious but how many calories do you eat on the 2 regular days?

    Okay. MKEgal wrote it up in an incorrect (and condescending) manner, so I can understand your confusion.

    You eat your TDEE (basically what it would take for you to be at maintenance) for FIVE days. And then you have 2 (generally non-consecutive) days of "fasting", where you lower your caloric intake to approximately 25% of your TDEE.

    Guideline recommendations usually come in at 500 calories on a fasting day for women and 600 for men.

    Some find it easier to eat absolutely nothing on their fasting days, but I have stuck with the above recommendations and find that they work great for me in a long term, sustainable way.

    Hope this helps.
  • jvs125
    jvs125 Posts: 223 Member
    It didn't work for me. I was restless at night and didn't sleep well. On the days that I restricted my calorie intake, I was ok, but on the following days I was so hungry that I had trouble staying reasonable with my intake and making good food choices. I had acne for the first time since my teens.

    I do better with my overall health and sanity trying to keep my calories at a small deficit every day.
  • flinx1241
    flinx1241 Posts: 2,168 Member
    Hi Flinx. Thank you! I haven't been able to find any groups. I'm struggling to navigate this website. Could you paste a link or something?

    Urban Princess, my regular day goal is 1617 (5ft4, sedentary). There is a calculator at:

    http://thefastdiet.co.uk/how-many-calories-on-a-non-fast-day/

    Sure.

    http://community.myfitnesspal.com/en/group/49-intermittent-fasting
    http://community.myfitnesspal.com/en/group/100058-5-2-fasting

    The first one is a more generic Intermittent fasting group. Some in there doing 5:2, others doing other versions.
    The second is obviously more specific to the 5:2 version.

    :)
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    Thanks PikaKnight. I think that ties in with what my GP was saying about it being good science. Given that I checked with her, I am happy that there is no medical reason not to do it. The question is whether I'll be a able to stick to it!
  • PikaKnight
    PikaKnight Posts: 34,971 Member
    jvs125 wrote: »
    It didn't work for me. I was restless at night and didn't sleep well. On the days that I restricted my calorie intake, I was ok, but on the following days I was so hungry that I had trouble staying reasonable with my intake and making good food choices. I had acne for the first time since my teens.

    I do better with my overall health and sanity trying to keep my calories at a small deficit every day.

    Trying to get that low on the fast days triggered my migraines and also set off a bad reaction (I'm reactive hypoglycemic) so this wasn't a method of eating that ended up working for me either.
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    Flinx -brilliant!

    jvs125 - I'm not working at the moment. I hear it can be bad for your concentration, so I'm not sure I'd want to do it if I had to be on-the-ball all day...
  • beemerphile1
    beemerphile1 Posts: 1,710 Member
    I am interested in doing the 5:2 but not for weight loss. There are other purported health benefits associated with 5:2.

    Sure wish someone would provide a link to the MFP 5:2 group. I don't see a way to search the groups.
  • PikaKnight
    PikaKnight Posts: 34,971 Member
    I am interested in doing the 5:2 but not for weight loss. There are other purported health benefits associated with 5:2.

    Sure wish someone would provide a link to the MFP 5:2 group. I don't see a way to search the groups.

    Flinx did. *Points up a few posts above*
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    PikaKnight wrote: »

    Trying to get that low on the fast days triggered my migraines and also set off a bad reaction (I'm reactive hypoglycemic) so this wasn't a method of eating that ended up working for me either.

    Oh dear. I do get migraines very occassionally, so I'll watch out for any link. Thanks.
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member

    Sure wish someone would provide a link to the MFP 5:2 group. I don't see a way to search the groups.

    Hiya. Flinx1241 suggested these:

    http://community.myfitnesspal.com/en/group/49-intermittent-fasting
    http://community.myfitnesspal.com/en/group/100058-5-2-fasting
  • PikaKnight
    PikaKnight Posts: 34,971 Member
    PikaKnight wrote: »

    Trying to get that low on the fast days triggered my migraines and also set off a bad reaction (I'm reactive hypoglycemic) so this wasn't a method of eating that ended up working for me either.

    Oh dear. I do get migraines very occassionally, so I'll watch out for any link. Thanks.

    Some people with migraine issues aren't affected, but some are. I would say just make sure to do it on a day you aren't busy (and preferably home) and to have any meds you take handy. And don't try to outlast it. If it starts getting bad, abandon it for the time and eat something.

    I made the mistake of trying to push through it with excedrin but it got so bad it lasted almost 3 days.
  • flumi_f
    flumi_f Posts: 1,888 Member
    edited June 2015
    Flinx has it right and I've been doing this for over two years.

    Might not be for everyone, but after a life time of being overweight, I lost 28kg and have maintained for over 1yr. My profile pic shows May 2013 / 2014 / 2015 B)

    @beemerphile1 - see flinx' above post for the links.
    @lauramckendrick609 - some people are energized and have better concentration on fast days. Everyone is different.
  • galprincess
    galprincess Posts: 683 Member
    I have friends on the 5:2 and like anything else it worked for some ( self control is vital) not others the ones it worked for logged and stuck to 500 calories and a healthy set amount of calories the other 5 days it failed for the ones who starved 2 days then binged on junk the other 5
  • flumi_f
    flumi_f Posts: 1,888 Member
    PikaKnight wrote: »

    Trying to get that low on the fast days triggered my migraines and also set off a bad reaction (I'm reactive hypoglycemic) so this wasn't a method of eating that ended up working for me either.

    Oh dear. I do get migraines very occassionally, so I'll watch out for any link. Thanks.

    Headaches on fast days can be caused by low sodium or caffeine withdrawl. A bouillon and / or a coffee might help if that's the cause.
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    flumi_f wrote: »

    Might not be for everyone, but after a life time of being overweight, I lost 28kg and have maintained for over 1yr. My profile pic shows May 2013 / 2014 / 2015 B)

    Congratulations!
  • Urban_Princess
    Urban_Princess Posts: 219 Member
    Hi Flinx. Thank you! I haven't been able to find any groups. I'm struggling to navigate this website. Could you paste a link or something?

    Urban Princess, my regular day goal is 1617 (5ft4, sedentary). There is a calculator at:

    http://thefastdiet.co.uk/how-many-calories-on-a-non-fast-day/

    ah thanks! Sorry it is 5 days fasting and 2 eating normally! thanks for the link. I'm currently doing IF but doing a 18:6 version. So many versions out there and it is great if you found one that works well for you.
  • flumi_f
    flumi_f Posts: 1,888 Member
    @lauramckendrick609 - just a thought due to your profile pic...5:2 ist not recommended for women trying to get pregnant, who are pregnant or breastfeeding. Fasting (as well as weightloss in general) can mess up the hormonal cycle of some women.
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    Yeah, for me it's two (non-consecutive) days at 500 calories and five at 1617.
  • lauramckendrick609
    lauramckendrick609 Posts: 14 Member
    flumi_f wrote: »
    @lauramckendrick609 - just a thought due to your profile pic...5:2 ist not recommended for women trying to get pregnant, who are pregnant or breastfeeding. Fasting (as well as weightloss in general) can mess up the hormonal cycle of some women.

    He's my nephew :smile: I have very few photos of myself.

    Thanks for the hormone tip though. I have mood issues that tie in with hormones.
  • weird_me2
    weird_me2 Posts: 716 Member
    I don't have the link to the groups, but there is a 5:2 group and an IF group here on MFP. Some people are very against it, some people really like it. I'm in the like it camp. The article posted previously really has no bearing on 5:2 or any other form of IF. For me, it supports IF because it said it boils down to the brain - it's much easier for me to do 5:2 (or 4:3 some weeks) to reach my calorie goals than it is to maintain the daily deficit. I eat 20-25% of my TDEE on fast days and at my goal weight maintenance on feast days. I have been doing this for a month and am really enjoying it.

    I've struggled with disordered eating in the past and doing the 5:2 has helped me be more like a "normal" person and I really don't deal with the urge to binge any longer, and my emotional eating is under control, even though I'm going through a very emotionally trying time.

    I never feel like I'm "punishing" myself on fast days, and you only fast 2 days of the week, not 5. I do recommend tracking your intake on feast days as well, because it is not a free- for all, but it has really helped me be very satisfied with my current intake level. I love sitting down and enjoying my food on feast days and realizing that this is what it'll be like for the rest of my life. Eventually I'll be able to cut out the fast days completely, or maybe keep one day for cushion, but I'll always be able to eat like I do on feast days.
  • jvs125
    jvs125 Posts: 223 Member
    Research shows great health benefits with IF; however, further research indicates that the benefits are mostly for men. Apparently it could actually be bad for women and create hormonal imbalances.
  • flinx1241
    flinx1241 Posts: 2,168 Member
    jvs125 wrote: »
    Research shows great health benefits with IF; however, further research indicates that the benefits are mostly for men. Apparently it could actually be bad for women and create hormonal imbalances.

    Not disputing that this may be true, but providing credible links to broad based statements like this is generally encouraged...