Curious about the keto egg fast? Find out what it is, and how it works.

This is an account of how I first heard about and experimented with Egg Fasting years ago. Since then I have done it many times, and have created this free 5 Day Egg Fast Meal Plan that has helped thousands of people break through plateaus and lose stubborn fat.
Ever since I had to take steroids this past Spring for my allergies, my system has completely rebelled. My hormones are out of whack, and my body has become completely resistant to losing weight. No matter how strict I am with keto – even counting calories and cutting out dairy, alcohol, etc. I have not been able to drop pounds.
Even worse, every time I go off plan for the weekend or some event, additional stubborn pounds creep on. I know that a lot of you are struggling with this same problem, so I thought I’d do some research on ways to break through a weight loss plateau.
Recently I started hearing about the Egg Fast and was intrigued. I’m planning to try it and track my results. I thought you guys might be interested in trying it too, so I’m posting some basics about it here for those of you who have never heard of it.
What is the egg fast?
The Egg Fast is a (short term) diet that consists of primarily eggs, cheese, and butter. For each egg you eat, you should eat a corresponding tablespoon of pure fat in the form of butter, olive oil, or coconut oil.
You can also eat a corresponding tablespoon of full fat cheese per egg. Doing this will result in an extremely low carb, high fat, moderate protein intake that will kickstart your body into fat burning mode.
In my research on the egg fast diet I couldn’t find any scientific reasons as to why it works, but there are a lot of anecdotal cases of people who have had success with it.
The biggest issue people seem to have is gaining the weight back when you go back to regular LCHF or keto. Across the board it seems that at least 90% of the people doing it will gain at least a portion of the weight lost back – though there are some who have kept almost all of it off with a careful reintroduction to their normal keto diet.

The key to success with the egg fast seems to be cycling on and off for 4-5 days a week.
While on your off days, you should stick to LCHF (keto) and even then, don’t go nuts. It seems possible to lose 8-10 lbs (or more) a month this way and keep it off.
To be clear, while I’d love to do that, I’m not (at this time) planning to do the egg fast long term. I’m hoping that this one week egg fast will kickstart my metabolism, and get my body back in weight loss mode so that I can go back to my normal keto routine and start losing consistently again like I have in the past.
I had no trouble losing almost 60lb on keto the first year I started – and kept most of it off until I started having severe seasonal allergies in 2012 that wreaked havoc on my entire system. Stalls can be the result of medications, hormones, age, and other factors.
If you’re having issues losing on low carb now, even though you’ve had success in the past, you might need a reset like I do. Hopefully this egg fast will be the thing that works to get my body back on track, (and maybe yours too!)
I’ve customized the egg fast to my own preferences, and here are the basic guidelines of the egg fast that I plan to follow for the next 5 days:
- Bullet Proof Coffee within 30 minutes of waking (coffee with 1 tablespoon MCT oil, 1 Tbsp Kerrygold unsalted butter)
- Eat 3-5 meals of at least 2 eggs each, starting no later than 10am.
- Have 1 tablespoon of butter or sugar free mayo per egg consumed
- 6 ounces of full fat cheese (cream cheese, cheddar, brie, etc.) allowed per day (eaten with eggs or separately as a snack)
- No eggs after 7pm (1 string cheese allowed after 7pm if starving, counts as part of the 6oz daily limit)
- Don’t go more than 4 hours between meals or snacks between 10am and 7pm.
- Drink 100 oz of water per day (minimum)
- Supplement with magnesium and potassium (lite salt) daily.
- Small amounts of fresh herbs, hot sauce, no carb sweeteners, and spices will be allowed – as long as they are less than 1g net carbs per serving, not to exceed 5g net carbs per day.
This may sound unduly restrictive, but you’d be surprised how many delicious recipes/combos that you can come up with using eggs, cheese, and butter (cream cheese pancakes anyone?)ย ย For those of you that are interested in trying it and want some structure, I’m working on a one week egg fast meal plan that I will post next week. I will strictly adhere to that same meal plan and will update you with my results at the end of my first week.
Update: I lost 7.4 lbs in five days, then gained back .5 lbs over the next two days for a net loss of 6.9 lbs. in one week.
Click here for my 5 Day Egg Fast Menu Plan!
Egg Fast Recipes
Buffalo Omelette
Salted Caramel Custard
Easy Deviled Eggs
Snickerdoodle Crepes
Fettuccini Alfredo

A word of caution: If you are not already fat adapted and are eating hundreds of grams of carbs per day in your diet, you may not want to embark on an egg fast until you’ve been in ketosis for awhile. Jumping right in can make you feel really lousy, and may even be dangerous if you have other health conditions. Consider trying my 3 Day Keto Kickstart first and see how you do before trying something as low carb and high fat as this egg fast.
Stuck in a plateau? Is an egg fast something you’re interested in trying? Have you already tried it? I’d love to hear your results/thoughts in the comments!
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Susan says
Can you post a shopping list for the 5 days?
D'Gee says
Did you find that your loss kickstarted again after the fast? I’ve been up and down ten pounds for THREE MONTHS after losing 70 pounds. I’m desperate! It’s so hard not to get discouraged and just give it all up.
Lori says
I would like to introduce myself to you I’m Lori. I am not new to low carb buti am new to egg fasting. I have not eaten a single egg in over 30 years but i am giving this egg fast 7 days . I just finished my second full day and feel great. Ty kindly for all of your stories of encouragement.
Mellissa Sevigny says
Hi Lori, so glad the egg fast is working for you!
Leigh says
It was really nice to read the first line of this! I’ve been so frustrated and unable to lose weight now matter how I eat or work out. I too was on steroids, I had a tumor inside my spinal cord and was on very very high doses. By the end I looked like I weighed a million lbs now ten months later I’m still fighting weight. I’m glad it’s not in my head and they actually cause weight to be stubborn.
Amber says
So only eat 1200 calories a day of the eggs and cheese, correct?
Mellissa Sevigny says
No. The 1200 mentioned in this post was for a fat fast. The egg fast has no calorie restrictions.
Lynette Kammerer says
Hi! I absolutely love your site. Your post about the egg fast was intriguing enough to make me want to try it. My problem with LCHF is that I’m good for 3 weeks then I fall off the wagon for about 2-3 weeks. I’ve been yo-yoing like this since the end of April. So, in the middle of one of my self-sabotaging moments, I decided to do the egg fast. It was amazing! I did not get sick of eggs at all and still enjoy them on day 2 of transition back to regular LCHF. I lost a total of 10 lbs in 5 days and have managed to keep losing the last 2 days. I fell in love with the Buffalo Omelet and have added it to my Thanksgiving weekend menu to serve to my family for breakfast one day. I also tried the fettuccine alfredo and really enjoyed that too. Thank you for this blog post. I intend to visit here frequently while planning my upcoming holiday menus.
Lisa says
I am on Day 1. Don’t mind eggs and I have recipes to change it up, but I’m hungry! I’ve lost 80# in 2+ years and now can’t lose at all in months. Over the weekend, I had a roll, some tortilla chips (maybe a handful) and a couple bites of brie that had a brown sugar sauce on it. Not my typical weekend. I’m usually quite strict on keto. I gained 2 lbs! Giving this a shot
Love And Low Carbs says
I LOVE your website. One of the reasons I started my own EF journey.
I’m not very creative with my recipes – so love that you’ve come up with these (along with the beautiful pictures!). Definitely going to try them out.
I started my own blog documenting my journey as I was inspired by yours! :)
Krystal says
Question for you: I plan on having 3 meals of 2 scrambled eggs with a tbsp. of butter per egg (I use Kerrygold Salted butter specifically). I intend to have BPC in the morning too. I’m sitting at 1245 calories with that food plan without even getting any cheese in? I’m a little lost how to make it work best for myself. I don’t need egg noodles and custard (all look delish by the way) I am perfectly fine with just eggs.
Lisa Fielder says
After being on strict keto for six months and reading on your website about the egg fast, I tried it last month. Lost four pounds in five days (even though I consumed more calories per day on the egg fast than I’ve been eating normally) and – even though I was sick to death of eggs! – was thrilled it worked so well. I kept it all off, not regaining a single ounce, and have since lost eight more pounds. I suspect the secret to maintaining the loss is not to go crazy at the end of the fast, but to go right back to normal keto.
Trying it again next week to see what happens.
Karen says
Hey Lisa, I am contemplating to start an egg fast next week. How did you go on yours now?
I started Banting on 15 July, the weight loss has been slow and steady. About 2 to 2.5kg, a bit up and down but not more so I thought to up the ante by going on the egg fast