Video: 10 Signs That Intermittent Fasting Isn’t Right For You.

10 Signs That Intermittent Fasting Isn't Right For You #video #lowcarb #keto #fasting

Intermittent Fasting may not be right for you. It’s a great tool, but if you have 1 or more of these imbalances, you may be better off avoiding it. And, how to be keto without intermittent fasting.

When we’re Fat Fueled, our blood sugar is regulated and we naturally reduce the need to feed every 2-3 hours. Without the ups and downs of sugar irregularity, our body isn’t signaled to make up for the blood sugar lows. When we eat high-fat keto, we have unlimited access to the energy stored in our body fat.

These two scenarios make intermittent fasting quite effortless… but that doesn’t mean you should do it.

The information I’ve shared in today’s keto video is based on my personal experience, experience with my clients, and in depth conversations I’ve had with my health team of doctors, naturopaths, acupuncturists and more.

If you’re a woman who has tried intermittent fasting, or you’re interested in it, today’s keto video will shed some light on when intermittent fasting isn’t right for you (and why).

For video transcription, scroll down.


  • How intermittent fasting works
  • Whether women should practice intermittent fasting
  • How hypothyroid, amenorrhea and adrenal dysfunction reacts to fasting
  • How to be ketogenic without fasting



Hey guys. Today, I’m going to talk with you about intermittent fasting and the 10 signs that point to intermittent fasting maybe not being so great for you. The reason I’m making this keto video is because I meet with women one on one in my Spark sessions or chat with women on Facebook or Twitter and I see a trend. A lot of people trying to push themselves into intermittent fasting when maybe they’re not right for it. Before we do that, maybe you’re thinking, “Okay. What is intermittent fasting?” Intermittent fasting is when we’re going anywhere between about 14 hours of no food to 24 hours of no food. There are fast where you can go above that but this is not that.

You may have seen a couple of forms of intermittent fasting where people recommend that you do just no calorie drinks like diet drinks and water or coffee and then there’s the bulletproof style intermittent fasting where you’re having a fatty keto coffee and then there’s my form of intermittent fasting where you’re having your keto rocket fuel latte. I’ve linked up to that keto recipe right over here and down below if you want to see what that looks like.

How does intermittent fasting work? When you are keto and fat fueled, your blood sugar is regulated. Intermittent fasting is a lot easier when you’re keto and eating fat because when your blood sugar starts stabilized, when you’re eating lower amounts of carbohydrates, you’re able to long periods of time without food. The reason I remember eating a lot when I was eating high carbohydrate like over probably around 250 to 300 grams of carbs a day and plus that, especially when I was vegan. It’s not that when I’ve felt hungry, I was actually hungry. It was like, I just need something right now. By going high fat keto, we eliminate that need of, “Oh my gosh! I need to eat right now.” Therefore, we’re able to go longer periods of time without eating. Intermittent fasting were going about 14-hour mark plus.

When we eat high fat, low carb, keto, like how I’ve outlined in my keto book, The Keto Beginning, we have unlimited access to all the fat in our bodies and all the fat that we’re eating. We have fuel for a really, really long time. It’s not just that blood sugar regularity that’s reduced and therefore we can go long period of time, it’s that our body has fuel within us to continue to burn while we are not eating. All the information I’m about to share is from my personal experience and working with my clients in my Spark sessions, friends of family who have joined me in their fat-free journey and also multiple talks with my accupuncturist, my doctors, nutritionist friends. I mean, I have a huge crew of people that work behind the scenes when I have questions or concerns or even with my own health. Know that this information is specifically geared toward women because I find that we need to be gentle with ourselves a lot more and make sure that our body is really balanced before we get going.

Without further adieu, 10 signs that points you intermittent fasting maybe not being so good for you. Number 1, you have a history of anorexia, bulimia, overeating, under eating, any type of eating disorder or disordered type of eating patterns. It may not be so great for you to intermittent fast. The only reason I say that is because you probably come a long way, be on your recovery and not so great but if you’ve come that long way, it can sometimes trigger past feelings and beliefs and before you know it, you’re down in the depths of eating disorder craziness. If you have a history of an eating disorder and you’re in recovery, my suggestion to you would be just don’t intermittent fast.

Number 2, you have Amenorrhea. Specifically, Hypothalamic Amenorrhea or Amenorrhea that’s caused by a drastic amount of weight loss or Amenorrhea that’s brought on by a massive reduction in food quantity that you’re reducing your calories to 1100 calories for multiple months and then you lose your period. Amenorrhea is a loss of period, you’re going to do far better eating breakfast, lunch and dinner than you will with reducing your amount of calories or moving things around because we want to send a signal to our body that it’s safe. One of the reasons for Amenorrhea specially the Hypothalamic Amenorrhea is that your hypothalamus is like, “Dude, this body isn’t safe.” If we are not eating for long periods of time, even if it’s a rocket fuel latte or even if it’s a bulletproof coffee or anything like that, it might not send a strong enough signal to your hypothalamus. This doesn’t mean that you can’t be fat-fueled by still having breakfast, lunch, and dinner just means that you’re not intermittent fasting and that’s okay.

Now, number 3, you force yourself to do it. Oh my gosh! I am totally guilty of this. I did it. When I first started, I was like, “I’m going to intermittent fast and I’m on hour 10 and I’m so hungry and I’m just going to push through it.” That’s not what we want here. If you are hungry, eat. If you’re not, don’t. Simple as that.

Number 4, you expect that you may have adrenal dysfunction and I talk all about adrenal dysfunction in a previous video a couple of weeks ago so head on over here to check out that video, I’ve also linked below if you want to listen to that. If you suspect that you have adrenal dysfunction, it’s best to avoid intermittent fasting because again, we want to send a right signals to our body saying that it’s safe. Also, we want to pump it full of nutrients when we have an adrenal dysfunction, we want to make sure that we’re having as much nutrients as we can in our meals, breakfast, lunch, and dinner. It doesn’t mean that you can’t be fat-fueled.

Number 5, you are breastfeeding. You need a lot of fat so you’ve come to the right place. You need a ton of that. You also need a lot of nutrients and a lot of food and you need to be able to pump out the milk multiple times a day and in order to do that, I would suggest that you don’t intermittent fast because the more nutrients you have coming in throughout the day, the better off you’ll be.

Number 6, you’re pregnant. Yup. It happened. Congratulations. That is awesome. I’m so happy for you but you shouldn’t intermittent fast. Maybe if you’ve already been intermittent fasting for a super long time and then you’re totally rocking it, you want to keep continuing, I’ll leave that up to you. Maybe a couple times here and there in your first trimester maybe but if you are just finding this and you’re planning to get pregnant or you just got pregnant or you’re like a couple weeks away from being pregnant and you’re really in the depths of it, maybe don’t intermittent fast.

Number 7, you have Hypothyroid symptoms and I will be publishing a video about this in the next couple of weeks, it is an epic interview about all things Hypothyroid within the low carb, high fat realm. It is epic and I hope you love it. If you have Hypothyroid issues or symptoms, my recommendation to you would be do not intermittent fast or do it a couple times in a week but not everyday.

Number 8, your sleep has changed recently like since you went high fat, low carb. That’s a telltale sign that first, you need a carb up so head on over to my video about carbing up. I’ve link to it here and below about the signs and symptoms that point to you needing to do a carb up and what that looks like and how to do it. It’s all there. If you’re having any issues sleeping and this is a new thing that just popped up, that tells us that you probably have slight hormone imbalance and it points to maybe intermittent fasting not being so good for you. Until you figure out what that underlying imbalance is, solve it and then go back to work.

Number 9, you live a highly stressful life and you have no idea how to handle it and you’re just like, “Whoa!” all the time. An intermittent fasting may not be so good for you. Again, this goes back to an imbalance and making sure that you’re properly nourished throughout your day and a breakfast, lunch, dinner will send the right signals to your body saying everything is safe. It’s one last thing for your body to stress out about.

Number 10, the final one, you have got issues or imbalances or you have multiple allergies and you can’t figure out why all these allergies are happening and sensitivities and keep on pointing to leaky gut and all these crazy things are happening and you think you have sibo and candida and your gut … If you think you’re having problem with your gut, perhaps intermittent fasting isn’t right for you.

Notice a theme with all of these 10 things, most of them anyway. In most of these circumstances, I’m saying that it might not be so good to do intermittent fasting if you are healing from something or experiencing an imbalance. If you know like you have a clean bill of health, you are totally awesome, you are great. You’ve had blood panels done and your thyroid is awesome, your adrenals are on par, you live a totally chill life, you’re not pregnant and you’re not breastfeeding then heck yah. Do intermittent fasting. If you were one of those people but you really like intermittent fasting and you feel good with it, continue but maybe see how you feel during 2 to 3 days of intermittent fasting instead of every single day and also stressing yourself out when your friends invite you for breakfast and you’re like, “Oh my gosh! I’m fasting then how am I going to have breakfast?” Just have the breakfast and intermittent fast the next day.

When it comes to nourishing our bodies with the high fat eating style, I’ve definitely gone leaps and bounds by using fat and a lower carbohydrate intake to heal my body. I just had a bunch of blood work done and I will be looking through it all with my doctor in the next couple of weeks and then sharing all the results with you so you can see how powerful this way of eating is. It doesn’t mean that you need to intermittent fast or push yourself to limits because I firmly believe that if you have an imbalance like a low thyroid or adrenal dysfunction’s a little bit off or anything like that, it’s important to make sure that at the end of the day, we are eating as many nourishing foods as possible.

That’s really what I’m going to be talking about in my next keto book, Fat Fueled that comes out in just a couple of weeks in October. I’ve added a link below and up here to add yourself to a presale list. If you want to be part of the presale group, you get an awesome discount, invitation to an online keto event before the book goes live and I really talk about the 3 different keto profiles that you can put yourself into in order to become fat fueled but also thinking about nourishing your body. A therapeutic approach to a ketogenic eating cell that gets you keto and fat fueled but isn’t putting you into areas because I find there’s a ton of keto resources out there where listening to your body and encouraging your body to heal within a ketogenic eating cell isn’t all that encouraged. I hope to start up that conversation and I’m very excited to share it with you in just a couple of weeks.

If you want to get on a high fat, keto journey right away, the best place to start is with my keto book, The Keto Beginning, I have link to it here and below and you can give it a whirl as a 30-day keto guide and literally a beginner’s guide about how to do all of this. If you love the information that I share today, I would love for you to subscribe to my channel. You can do that, I’ve included a link right there and you can go ahead and subscribe and I will see all of you next Wednesday for another edition of my show. Bye!

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Happy Keto Body


  1. i LOVE your stuff and make files of it, calling you “my girl”…when identifying it from other keto advice but i really hate the videos in your bedroom, and so want to see something more professional like a doctor or nutritionist in business would do. It’s like you’re leaving a quick message before your mom finds out what you’re doing. kitchen maybe? office? outside?

    • Thanks, Lisa! This is my office and those are my food photography props in the background. You’ll notice this is a pretty old video and my background has since changed.

  2. Hi Leanne! Love your site and your podcast! My question is regarding fasting and how long is considered a fast? I often have a hard time pushing through the 12 hour mark but if I can have a fat bomb (often containing a small amount of nut or coconut butter) or two on top of a coffee, then I often can make it 18 hours until after my workout begins the afternoon. But what is considered breaking a fast? Some people say it’s when you have any carbs at all and others add cream or whatever as in your RFL. I thought it has to be strictly fat to continue a fast? Also, I am very confused by the amount of net carbs allowable, where some like you, go a lot higher then 5% with your carbs, yet I have read and had my keto diet coach warn me to not go above that 5% or it will kick me out of ketosis in the long run. I have been doing keto for almost three months now and I am trying to make it work for me, eat when I am hungry (I have found it nearly impossible to stay in calorie deficit) and figure out what works for my training (powerlifting) and it’s all been quite confusing at times. Thankyou for all your help!

  3. I’ve tried this a couple of times, but every time I start to get nauseated! Ugh! What am I doing wrong?

  4. Hai Leanne, i love your website en you tube video’s a lot, so much good information!! I’m on the keto lifestyle a long time, even tried zero carb ( stopped because too much protein for me and hard to do in the long haul) . The last months i tried IF for weight loss but i’m heaving a hard time with it……. is it possible some people (woman) gain weight on this?? Thanks

  5. Hi Leanne!

    I’m so glad I found yoru website as lot of things I read here had opened my mind on low carb high fat lifestyle. The information you share has been so useful for me. I wanted to share my experience with you and the community willing to get some feedback or similar cases.

    I’m really struggling with my diet to be honest. I started LC back in April due to mild insulin resistance and the problems to get pregnant that come with it. I got no PCOS by the way just hormonal imbalances from blood sugar disregulation. So I went to around 20g carbs/day plus intermittent fasting and after 3 months I got rid of insulin resistance, my FBS went from 110 (A1C 5.5) down to 85 (A1C 5.6), fasting insulin to 3.58. Important to mention that my post prandial BS is never above 120, it actually averages 115, my lipids are totally fine but I became malnourished as got some degree of anemia -low iron and low globulins- and the worst part I became hypothyroid and my hormone levels are in the post-menopausal range! While my TSH is fine at 2, T4 went down but still within the normal range and my T3 is very low. Main thing happening is not T4-T3 conversion. After the first 3-4months I started to feel less hungry and probably ate less than in the beginning.
    The thing now is that my FBS even at <20g carbs is going up to 98-100 while my insulin remains at 3.5. I'm not hungry by the way. And had found out that if I add 2 full spoons of: full fat yogurt, oatmeal or sweet potato to my meals my blood sugar goes "normal" to 90 as an average and fasting to 80-85. If I not have any carbs during dinner then I wake up at 100 again.
    Have you seen anything like this? Any clue based on your experience?
    Does it makes sense to you?
    i'm still watchnig your videos and Reading your book but, wanted to hear your comments.

    Thanks a lot!

  6. Hi Leanne, thanks for the info, I have been doing keto for 3 months now with no change so I started IF and added excercise …….. I want to lose 5-10kgs before I fall pregnant which I am wanting to do very soon. I have been IF for 2 weeks (without much research on it), I have got my macros right so I’m not hungry during the 16:8 fast and seeing some changes! I was curious as to why exactly is IF not safe during pregnancy? If it is a great woe normally, what is it about IF that is the unsafe part ……the calorie intake ( mine at the moment is 1200). AND Where can I find all the correct info I need on IF, can it still be done on higher calories? My RDI is 1600. Thanks so much!!! Love your videos too!!

    • Hey! I’m not sure of your medical history, but speaking from personal experience… I would NOT be doing IF or calorie restriction if I wanted to become pregnant. Now is the time to load up on nutrients to prepare your body. A pregnant woman should be eating when hungry, so if that happens to be an 8 hour window, fine. You just may find that when you’re pregnant IF will not suit your body. It all comes down to nutrients

  7. Hey Leanne…
    I really like you and your site and have been following for a LONG time…
    However, it’s been really bothering me that you go back on your word (quite a bit) For so long, for example, you were against stevia, flax and soy (saying you were even allergic to soy) and then you went and starting consuming them and promoting them. Then you were all about intermittent fasting…and now? I just find I have lost some trust in you. I don’t mean for this to be mean, I just wanted you to know. It’s disappointing because I really like you.

    • Hi Sophie – Thanks for your honesty and feedback. I’ll attempt to be clearer in my message. For soy, I’ve never promoted it (there were a couple of posts in the beginning where I used todu)… Stevia, I wrote a post about why I started having it again. Flax, I don’t remember saying I didn’t promote it… I’ve been eating it FOREVER. For IF, did you watch the video? I say reasons why you shouldn’t (there are 10 signs) but if you don’t have these things, IF is great! I hope that makes more sense? Perhaps taken out of context? I’d love to know which messages you feel were promoting soy as I haven’t eaten it in a long time. In general, as I learn new things, I share them with our community. I started this blog as vegan and it morphed into keto as I changed and adapted. I’m sorry that you feel this way and would love to understand where you feel the messages are crossed.

  8. In the UK many of us have been trying the two day fasting diet i.e., two days of week of 500 cals then the rest of the week on a “healthy” diet. Several of us in my office undertook the diet. Most though it was OK. Unfortunately it made me feel quite unwell. My diet is not too bad but I needed to shift a stone and a half after a build up over the winter. I concluded that because I take calcium channel blockers and beta blockers to control high BP, the fasting diet may not be suitable so stopped it and the symptoms disappeared. I now try to eat far more veg and some fruit and walk even if just for 15 minutes after my main meal in the evening to regulate my blood glucose. I have also cut portion sizes and ensure I only eat as much as I need. I mention this only because it may be worth adding to your list those on medication for high BP (although I don’t know if there is science to support this).

  9. At first I was totally negative about everything you were saying. I was a binge eater with adrenal dysfunction and working a high stress job; intermittent fasting is the best thing to ever happen to me. And then I realized I didn’t force myself into it. It just sort of happened. Keto forced me to become more mindful of my choices and listen to what my body really wanted/needed. If I wake up hungry, I will have breakfast. If I’m really hungry before bed, I will have a snack. If the girlfriends want to meet for breakfast, I’ll join them, but not eat. Because the pressure of social eating has completely vanished for me. The power of keto! Thanks for this video; it’s reminded me that everyone has to find the eating style that works for them and not to forget that my changes were slow in coming.

    • You perfectly summarized what I was trying to get across. You ROCK!

  10. Hi Leanne, thanks your videos are a wealth of information and help. I do not want to intermittent fast as I have adrenal issues but would prefer a coffee or smoothie type breakfast, would using your rocket fuel latte as a base but adding more protein and maybe cacao or maca work? Thanks

    • You bet, that sounds awesome! If you load it up with fiber, protein and healthy fats, you’ll be rockin’ it!