14

votes

Females: Have you benefitted or suffered from Intermittent fasting?

Answered on September 12, 2014
Created June 07, 2012 at 1:01 PM

Someone posted this article on PH awhile ago and I thought it was interesting given my current circumstances:

http://www.paleoforwomen.com/shattering-the-myth-of-fasting-for-women-a-review-of-female-specific-responses-to-fasting-in-the-literature/

BACKGROUND:

Vegetarian for 18 years eating every three hours and maintaining an average bodyfat of 19-22% over those years. Began paleo and in the first few weeks I continued eating several times a day with snacks and lost a whole lot of weight.

THEN: Began IF and would go from 9pm to 3pm without problems and my 4pm would always develop migraines for 2 days. I posted here to get some advice. http://paleohacks.com/questions/111346/hack-my-if-headache#axzz1x6nIswIx

I gave up IF and decided that I would return to it when I had everything else dialled it. In the meantime I had gained weight.

THEN Then went low carb (still paleo) and can easily do many hours without food so I thought I would give it another try. As usual I felt fine until 3pm and then BOOM migraine.

Are there many women here who have had the same experiences as I have or have you seen the llbs melt off? The article above states that IF Often harms women while being very good for men.

UPDATE: SEPT 2012. I have been doing leangains for about 3 months and no longer suffer from headaches etc. Given that I eat much more carbohydrates doing leangains than previously, I am wondering if that was the issue before. Although leangains is 16/8. I find that I often do longer fasts up to 22 hours without problems anymore. I have also lost some inches off my waist and doing very well energy wise.

F0e558010a2ecb31fa37b7c491596b8e

(3850)

on June 15, 2012
at 02:51 PM

+1 for "A healthy diet should never have masochistic elements"

16e4882455d4f25843d782a56b88a79d

on June 14, 2012
at 04:57 PM

After eating only several hard boiled eggs one morning I realized they were triggering my migraines. This was just after starting paleo a couple of months ago. Suddenly, beef also made me extremely ill. I decided to eliminate all familiar meats and successfully added them all back in except for beef. My migraine triggers, I now know, consist of eggs, almonds, dairy, cocoa and red wine. I urge anyone with migraines to at least keep a food diary. It's just too hard to tease out the culprits if you're not paying close attention. Migraines obliterate my memory, the food journal helps a lot.

E7adfe31507efb7c935f618a829f56d6

(1507)

on June 08, 2012
at 01:43 PM

Me too, Wowza :). I think 9-10 hours is my sweet spot. Low-carb also makes me moody. Same for you? Or are you low-carb?

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 01:07 PM

I cycle to work and I've noticed that it slows me down to eat before my commute.

19acef0aed67ef8dc1118d8e74edb349

(2954)

on June 08, 2012
at 07:20 AM

Don't know why... after all it's the same food, just different times of day...

19acef0aed67ef8dc1118d8e74edb349

(2954)

on June 08, 2012
at 07:20 AM

Have you tried eating a big breakfast even if you don't feel hungry? Even if I'm not hungry at breakfast I make myself eat; I feel a lot better eating breakfast + lunch, while eating lunch + dinner makes me feel 'bleh'. But anyway, I agree if it doesn't work for you, it's probably best to change it.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 06:20 AM

Yes Luisa. It's interesting because I've noticed I function very well on a empty stomach energy wise. Im much faster on the bike and clear headed for my clients. I never eat breakfast due to lack of hunger but by 1pm I'm generally hungry. I agree to doing only things that feel good that's why I'm kicking IFing in the butt. I don't believe it's worth it since it makes me feel like crap. Was interested in personal experiences though. Thanks

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 06:11 AM

Thanks Sarah. I used to have reactive hypoglycaemia in my vegetarian days so there's probably still a lot of issues. I've been paleo for less than a year.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 06:08 AM

@julianne. I went low carb to get rid of the pounds put on since going paleo. I only intended to stick with it for a week but I kinda like it!

80890193d74240cab6dda920665bfb6c

(1528)

on June 08, 2012
at 01:16 AM

"this means that women in general are more likely to get moody and hungry if they go too long without feeding," My experience 100%. I think I'll just eat normally, ty! :)

80890193d74240cab6dda920665bfb6c

(1528)

on June 08, 2012
at 01:13 AM

I thought I was a fine trying out IF, but my guy and pals all quickly informed me that skipping meals turns me into a snappy b*tch. So, not for me, thanks, altho' I love low-carb and wouldn't live any other way now! :)

0faecc3397025eab246241f4dcd81f5e

(2361)

on June 07, 2012
at 09:07 PM

Why low carb? Paleo is not low carb unless there is a reason for it - like diabetes etc. If you tolerate carbs - why not keep eating them - the headaches may be a response to the low carb diet

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 07:32 PM

I will look into eat. I eat high magnesium and zinc foods but you never know. I also eat eggs , steak and liver quite often.

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on June 07, 2012
at 06:32 PM

I was a vegetarian for 14 years. Like me, you may be Zinc & Magnesium deficient. Also essential to get your D3 level to 50-60 ng/ml. Big ass salads have lots of fiber (yuk), but liver, steak & eggs, etc are preferable for hormonal balance.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 05:05 PM

That is really interesting. I love my bis ass salads. In fact I was so ravenous yesterday after my fast that i made a HUGE ASS SALAD. Maybe I'm more metabolically challenged than I thought.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 05:01 PM

Thanks Alot for your input though.

345c1755efe005edd162b770dc6fb821

(8767)

on June 07, 2012
at 04:49 PM

my bad!!!! good luck to you!!

E7adfe31507efb7c935f618a829f56d6

(1507)

on June 07, 2012
at 04:26 PM

Great link, thanks for that!

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 03:54 PM

It wasn't 6 hours. It was from 9pm at night to 3/4pm the next day or whenever the headache came. Well I am currently seeing an endocrinologist. I know I have a whole bunch of hormonal issues and am taking DIM and calcium glucarate + Vit D to fix.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 03:51 PM

@NewEra.I was IFing because of all the supposed benefits plus I was trying to kick my obsession with food which I had after years of major carbs.

De641ff2accb4975e1f42886b43009db

(2227)

on June 07, 2012
at 03:35 PM

You might be magnesium deficient.

8634d4988ced45a68e2a79e69cc01835

(1617)

on June 07, 2012
at 03:22 PM

It was too hard on my body/stressed it out too much. It doesn't sound like you need to lose any weight. Why are you IF?

5ccb98f6ae42ce87e206cf3f6a86039f

(11581)

on June 07, 2012
at 01:27 PM

I'm very interested in the answers to this question. There is some evidence that IF may work differently/not-as-well for women than for men, but I'm not at all sure those studies are applicable to women out of reproductive age. They seemed to focus mostly on changes in reproduction.

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18 Answers

10
E7adfe31507efb7c935f618a829f56d6

on June 07, 2012
at 04:39 PM

I do a 14/10 instead of the typical 16/8. Even Martin of LeanGains has recognized that women seem to do better with a 10 hour feeding window--maybe try that?

Source: http://www.leighpeele.com/martin-berkhan-and-intermittent-fasting-interview

Leigh Peele: Have you found a difference between men and women using this program?

Martin Berkhan: Due to differences in body weight, body composition and calorie needs, very few women, especially those already within a ???normal??? weight range, get away with an unstructured approach to dieting. That goes for all diet approaches, not just IF. Sure, a lifestyle approach to IF will likely get a few pounds of you, but it won???t work all the way down to getting really lean for most women. The female body is very adept in protecting against fat loss below a certain body fat percentage and spontaneous eating without logging calories will often set people up for failure, unless they have a very solid track record of dieting in the past (i.e very attuned to their bodies caloric needs).

As we???re on the subject, I???ll also mention that I???ve revamped the diet guidelines I use for my female clients. For example, the fasted phase is now 14 hours by default, not 16 hours which is the case for men. This has brought about much greater diet compliance and less negative symptoms among women. The rationale for changing the guidlines makes a lot of sense based on the amount of feedback I???ve been getting, as well as my research on the topic. It turns out that women has lower plasma glucose concentrations than men after the same time spent fasting. In practical terms, this means that women in general are more likely to get moody and hungry if they go too long without feeding, while men can go longer without experiencing any negative effects, and this is exactly what I???ve been seeing. Men can do 16 hours quite easily, not so with women; for them, 14 hours is the sweet spot.

I???ve also made some other dietary alterations that increased has diet compliance for women, but I think I???ll save that part for the book. For now, I???ll just say that moving towards an isocaloric approach, with a healthy dose of carbs from fruit, has worked very well. Thus, I believe the optimal diet on this regime will depend on gender, which makes logical sense if you look at the differences in substrate metabolism between the sexes.

80890193d74240cab6dda920665bfb6c

(1528)

on June 08, 2012
at 01:16 AM

"this means that women in general are more likely to get moody and hungry if they go too long without feeding," My experience 100%. I think I'll just eat normally, ty! :)

E7adfe31507efb7c935f618a829f56d6

(1507)

on June 08, 2012
at 01:43 PM

Me too, Wowza :). I think 9-10 hours is my sweet spot. Low-carb also makes me moody. Same for you? Or are you low-carb?

8
1b979cd0d09ec7b34f872447a54b46ac

(240)

on June 08, 2012
at 07:21 PM

While everyone is different, I can say for myself that intermittent fasting (in combination with a fairly low carb, strict paleo diet) sent my hormones into a complete tailspin. Lost my period, symptoms of PCOS returned, dizziness and water retention were all side effects of my little journey into IF. Granted I should probably not have been tinkering with a potentially stressful activity while I was dealing with hormonal issues. However, I was only doing 14-16 hour fasts and did not feel that I was particularly stressed at the time but after a few weeks it became very apparent that I was not functioning 100%.

Clearly many people have experienced positive results with it, but I think for some it can be like throwing gasoline on a fire. I do feel that intermittent fasting is treated too lightly in the paleosphere-- if an individual is attempting to regain optimal health I think recovery should be emphasized rather than the potential benefits of autophagy/leaning out, etc. Women especially it seems need to be very careful about keeping their bodies nourished, stress free and well balanced (damn ovaries!). Again though, if it works for you, go for it. Just be aware of potential red flags-- if you are irritable/starving/obsessing over food porn and your "eating window" maybe consider just eating when you are hungry and moving on. A healthy diet should never have masochistic elements.

F0e558010a2ecb31fa37b7c491596b8e

(3850)

on June 15, 2012
at 02:51 PM

+1 for "A healthy diet should never have masochistic elements"

5
E3267155f6962f293583fc6a0b98793e

(1085)

on June 07, 2012
at 01:42 PM

I found no benefit nor was there any suffering. It made no difference in how I felt, it did not help in my weight loss efforts or body composition.

4
345c1755efe005edd162b770dc6fb821

(8767)

on June 07, 2012
at 01:17 PM

Actually I found IF'ing extremely helpful to get those last few pounds off, but I did it differently than you, my schedule was:

wake up, have breakfast around 10am, lunch around 2-3pm, snack if needed around 4pm then IF until next morning. I tried not to eat after 4pm. (LC, high fat balanced)

I never saw a need to go beyond the 18 hour mark for fasting (on purpose), it was working so perfectly....and I never felt the need to 'binge' eat because I never felt like I was starving either. It felt very normal and natural to me and I had a calmer digestive system as well.

My routine was pretty much this every day, when the weekend rolled around or had dinner invites out I just ate the extra meal and went back to my routine again the next possible day. I still continued to shed fat and weight and it never phased me. I have had to fast for up to 48 hours before, and I don't do that unless I'm traveling and can't get food...I don't recommend it, you start to feel weak and groggy.

I still follow this routine but I tend to eat more and have a few more evening snacks as I'm trying to maintain and I keep loosing if not. (I'm HC now).

Your issue is the migraines being provoked by something/lack something, I'd look into that and see what you body is asking for and see if you can figure it out.

I believe for benefits of IF'ing you need to go at least 18 hours, so 6 hours is not really considered a fast.,..your body is telling you to listen!

345c1755efe005edd162b770dc6fb821

(8767)

on June 07, 2012
at 04:49 PM

my bad!!!! good luck to you!!

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 03:54 PM

It wasn't 6 hours. It was from 9pm at night to 3/4pm the next day or whenever the headache came. Well I am currently seeing an endocrinologist. I know I have a whole bunch of hormonal issues and am taking DIM and calcium glucarate + Vit D to fix.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 05:01 PM

Thanks Alot for your input though.

3
19acef0aed67ef8dc1118d8e74edb349

(2954)

on June 08, 2012
at 03:58 AM

Hmm... aren't rats prey? Meaning, they eat like prey... snacking all day? Then of course fasting wouldn't be good for them. But humans are not prey, are they? So I imagine they're meant to eat like the other predators.

I don't fast on purpose, just do what feels right to me.
When I started eating Paleo I naturally fell in a routine, eating a big meal at 7AM, and a smaller meal around 1PM.
After a while it evolved into occasional days where I didn't eat at all.

Note, if I'm hungry, I do eat! I only fast because I'm not hungry.
I did notice I have a problem actually getting hungry, so I ended up eating very little calories. (600-800 per day) After I noticed that I started cooking my eggs with 3-4 tablespoons of fat, eat fattier cuts of meat, and sneak in fat (calories) whenever I can. I'd rather do that than eat smaller meals throughout the day, that's how much I like to IF. I feel much better when I IF (specially the 2nd day).

  • Best fat loss when I fast.
  • My mind is clear (I think better) when I fast.
  • For some reason I have more physical endurance when I fast.
  • I'm not as susceptible to snacking when I fast. If I eat smaller meals throughout the day, that generally leads into more and more snacking... and eventually snacking on junk... not sure why...
  • Better and predictable poops.
  • Happier mood, probably because my mind feels so clear.
  • The link says "they masculinize", but for me... my cycle is more regular than ever.
  • I have adrenal issues, but feel much better when fasting.
  • And most important of all to me... much easier to sleep! I actually get sleepy, AND I fall asleep!

I DO need to eat breakfast-lunch. If I eat lunch-dinner instead, all these benefits go away. I find it interesting.

I'm not low-carb, I eat all vegetables under the sun. Starchier stuff in the winter, since that's what's in season then. In the Summer, about 60-100 carbs. In the winter, more.

I'm not sure how I feel about fasting when you're starving, sounds silly to me. It seems when IFing you already eat less calories, how big a meal would you need to compensate for the missed calories AND nutrients?

I've never been pregnant so I don't know what it would be like to fast in that situation. I'll find out what my body feels like doing when I get there.

I think we should just all shut up and do what feels good.

19acef0aed67ef8dc1118d8e74edb349

(2954)

on June 08, 2012
at 07:20 AM

Have you tried eating a big breakfast even if you don't feel hungry? Even if I'm not hungry at breakfast I make myself eat; I feel a lot better eating breakfast + lunch, while eating lunch + dinner makes me feel 'bleh'. But anyway, I agree if it doesn't work for you, it's probably best to change it.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 06:20 AM

Yes Luisa. It's interesting because I've noticed I function very well on a empty stomach energy wise. Im much faster on the bike and clear headed for my clients. I never eat breakfast due to lack of hunger but by 1pm I'm generally hungry. I agree to doing only things that feel good that's why I'm kicking IFing in the butt. I don't believe it's worth it since it makes me feel like crap. Was interested in personal experiences though. Thanks

19acef0aed67ef8dc1118d8e74edb349

(2954)

on June 08, 2012
at 07:20 AM

Don't know why... after all it's the same food, just different times of day...

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 01:07 PM

I cycle to work and I've noticed that it slows me down to eat before my commute.

3
F9638b939a6f85d67f60065677193cad

(4266)

on June 07, 2012
at 04:35 PM

I tried IF for a while going from breakfast Wednesday to breakfast Thursday. I would feel very cold on Wednesday night to the point that I found it hard to sleep and would have to take hot showers to warm up. I gave it up because I was so cold, but I do think it helped me during the weight loss phase. I also attempted Fast-5 but it made me crazy obsessed with food and I would eat out of control due to obscene hunger so I gave it up. Now I just eat 3 meals a day, often my lunch is more snack-like than an actual meal, and I feel great. I have already lost the weight. I only fast now if I am not hungry at all for some reason.

2
Fd7b128cf714044a86d8bd822c7a8992

(4292)

on June 08, 2012
at 02:49 AM

I liked IF in theory, but after a while I started to realize that it made my binge eating much harder to control. So I started eating without any time restrictions and I operate on a much more even keel now. I started IF for weightlifting, so maybe my gains will be a little slower but it's worth it to me.

2
9beda76f4e91faedc8fa70ecdc01251e

(298)

on June 07, 2012
at 11:26 PM

After eating mostly paleo for some months, I realized I wasn't hungry until around 10 or 11am, so I delay breakfast until then, most days. I'll eat earlier if I'm hungry, but I never make it to 3pm, so I can't tell you if I'd have a headache or not.. Sorry! But I find that little bit of fasting helps me feel better, and keep a few pounds off.

2
88a669ef87f8138d6bbfbdace533a482

on June 07, 2012
at 10:27 PM

Eggs are a common migraine trigger. Since going paleo in January, my worst migraine was after reintroducing eggs on Easter (deviled eggs made with homemade mayonnaise). Otherwise, the frequency of migraine has been reduced by more than half. The "bulletproof" coffee you mentioned in your previous post isn't your friend. My other known food triggers are onions, raw garlic, and pineapple. Maybe try eliminating eggs and coffee for 6 weeks and then IF to see if you still get the migraine. The other thing that occurs to me is that you might still have residual blood sugar instabilities. You don't say how long you've been paleo, but given the degree of dysfunction, it can take months or even years to heal the damage wrought by two decades of carbs, wheat, etc, especially if you've been rendered borderline celiac (as I believe myself to be). IF may just not be in the cards for you right now. Focus on healing and good luck with the migraines.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 08, 2012
at 06:11 AM

Thanks Sarah. I used to have reactive hypoglycaemia in my vegetarian days so there's probably still a lot of issues. I've been paleo for less than a year.

16e4882455d4f25843d782a56b88a79d

on June 14, 2012
at 04:57 PM

After eating only several hard boiled eggs one morning I realized they were triggering my migraines. This was just after starting paleo a couple of months ago. Suddenly, beef also made me extremely ill. I decided to eliminate all familiar meats and successfully added them all back in except for beef. My migraine triggers, I now know, consist of eggs, almonds, dairy, cocoa and red wine. I urge anyone with migraines to at least keep a food diary. It's just too hard to tease out the culprits if you're not paying close attention. Migraines obliterate my memory, the food journal helps a lot.

2
Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on June 07, 2012
at 04:47 PM

I think everyone is different.

I also think nutrient density can make a big difference. I eat liver, eggs, oysters and gelatin on a regular basis, as well as lots of beef. No big-ass salads for me!

I've happily done 16/8 IF for over a year. 49, 5'6" 125 lbs.

What works for me is 10-6 or 11-7 for my eating window. In the winter, I seem to want to eat earlier, so I eat from 9-5 or 8-4.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 05:05 PM

That is really interesting. I love my bis ass salads. In fact I was so ravenous yesterday after my fast that i made a HUGE ASS SALAD. Maybe I'm more metabolically challenged than I thought.

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on June 07, 2012
at 06:32 PM

I was a vegetarian for 14 years. Like me, you may be Zinc & Magnesium deficient. Also essential to get your D3 level to 50-60 ng/ml. Big ass salads have lots of fiber (yuk), but liver, steak & eggs, etc are preferable for hormonal balance.

5759bd89db5f73cabe0a6e8f8e6e1cb9

(1467)

on June 07, 2012
at 07:32 PM

I will look into eat. I eat high magnesium and zinc foods but you never know. I also eat eggs , steak and liver quite often.

2
45e51fee7d295e523ff4134f76c3ba05

(923)

on June 07, 2012
at 02:00 PM

I try to do a 24 hour IF every Monday and Friday, plus eat within a 12 hour window the other days of the week. I started off experimenting with IF to help with weight loss and to become reacquainted with hunger, so to speak. However, recently my reason for IF'ing has changed since I've just found out I have cancerous cervical cells again (this is round #2 for me) and am trying to starve them off, so I've gotten much more serious about IF and nutrition.

I don't have any adverse reactions or side effects to IF'ing. In fact, for the most part, I enjoy not thinking about food and find it pretty liberating. I don't really find it helps much with weight loss though. I typically might lose .5 lbs after a 24 hour fast.

2
6ba8b4ef453010c8ae07f7b9de32130c

on June 07, 2012
at 01:58 PM

I love IFing and do it every day. I eat anytime after 11:30 and done by 7:30 p.m. I work out fasted first thing in the morning. I've been doing it since January and LOVE it. Once my "feeding window" opens I eat strict Paleo. I was Paleo for over a year before I started doing daily fastings. I did also lose those stubborn last few pounds by doing this. I am so use to eating this way that I don't ever see the need to add breakfast back in. Less stress always worrying about food. I noticed there are days I don't even eat my first meal till 2. Then once I start eating watch out!! HAHA

1
94480caec9fbbaacc386d86a45efa720

(1007)

on June 08, 2012
at 11:47 AM

I got weight loss benefits from some 36 hour fasts in April. That put me into a "normal" range. I have done 2 24 hour fasts since and not seen weight loss but I don't get headaches or other issues. In fact, I still feel pretty good when fasting but I have higher body fat - about 28% estimated so maybe my body is still burning fat whereas your bodyfat comp is in the low to healthy range. My waist to height ratio is very good but I store my fat in other areas. But if I started getting migraines that wouldn't go away after I'd eaten, I would change the IF or skip it all together. n=1

1
559a1bf85bfe38a0fbbf56377c7278b4

on June 08, 2012
at 12:48 AM

I have lost 50lbs in 18 months, without hunger and without exercising (although I am more active than before I lost the weight).

The most important factor has been low carb, the second has been calorie-counting and the third has been IF.

I had a metabolic syndrome-type condition and I monitor blood sugar levels, too. These show me that it has to be low carb for me, of about 50g per day.

I started counting calories because after several months my weight loss slowed down. Limiting calories to about 1500 got the weight loss going again (before I ate about 2000 calories a day).

After a few more months I found out about IF. For me, it just means skipping breakfast. I find it easy to do, because I have never liked breakfast but I do like to eat in the evening. I have lunch at about 1:00 pm and dinner at about 7:00 pm and the rest of the time I don't eat, although I have a couple of decaff coffees with cream.

The IF helped the weight loss get going again. Breakfast, even a protein breakfast, made me hungry, so doing without it has helped the weight loss continue.

I am sure that my metabolism has learned how to burn fat again, and that's what enables me to fast for those hours without hunger; I still have a good supply of fat and that gives me plenty of energy. Low carb means low insulin and that helps me release the fat to burn.

If I eat too many carbs I get into sugar-burning metabolism again, and I get hungry every two hours or so, as my sugar stores are much smaller than my fat stores. If I ate too many carbs, it would not be possible for me to fast.

I should also say that reducing PUFAs and gluten and increasing saturated fats, and various other paleo measures have also, I am sure, helped heal my metabolism, although the effects are a bit more subtle than lower blood sugars and weight loss.

1
3351f6c8ec1ea64435e419f380ca6468

(1255)

on June 07, 2012
at 10:29 PM

I had a lot of success with IF and still do it occasionally, although I've pretty much done the weightloss I set out to do. I tend to do a 20-24-hour fast starting in the evening after dinner - so I skip breakfast and lunch the next day. I made sure before attempting it that I'd been low-carb and keto-adapted for a while, and I've never had any migraines or issues with it at all. Each time I did it for weightloss purposes, it broke a stall.

I do it now to let my system rest a bit if I've been eating on the "20" side of 80/20 and am feeling less than wonderful, or I might fast a shorter period if sleep was bad and I don't want to get up early enough to do breakfast. I like the flexibility that being able to fast gives me.

0
142d7e06e608cff536ab78e6ca78ce38

on May 04, 2013
at 02:34 AM

I have celiac and leaky gut and fasting is the only thing that gives me relief. I eat at 10 a.m. and again at 2 p.m. I find this gives my digestive system time. I have lost the last few pounds I wanted and also do not suffer the pain I did previously.

0
E57c7c65c3eaab51f9ffe613fd87475f

(80)

on May 03, 2013
at 07:27 PM

I do the 14/10 and its been working out well. Eating window is 8am-6pm. I feel better going to bed on an empty stomach. Havent been doing it long enough to notice hormonal changes (2nd week in) I have to make sure to have a higher calorie day during the week otherwise eat more starches during the week. My calorie intake is a little lower when Im fasting.

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0f9e1ddb9b16713bf0eb22fcfe2bbd12

on January 31, 2013
at 09:26 PM

I've been doing the 16/8 fast for 10 days now. It's really helped my metabolism as I have not lost any weight in more than 3 years regardless of calorie counting and exercise. Before IF, I could fast and jog every day and literally would put on weight. After ten days of IF I have lost 5 pounds without even trying, didn't even jog.

I eat organic veggies, meat fish and eggs, and a few carbs, but gluten-free. Overall I feel great on IF and am not hungry during my fast time 8:30 pm - 12:30 pm. For the last 2 days I got a bloated stomachache feeling in the evening after my last meal. Then today I got an incredibly painful migraine after eating lunch. Two hours later it is gone, but for a few moments I was wondering if I was going to faint.

I did have eggs for lunch, so not sure that had anything to do with it though. My theory is different -- I think when the body is burning fat, all the chemicals that were stored in the fat are being detoxed; I think that the symptoms are a result of these chemicals being deposited in the blood stream to detox. I'd be curious to hear if anyone else has been on IF longer and if these "detox" symptoms go away over time.

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