Intermittent fasting on keto

Intermittent Fasting and Keto: Your Quickstart Guide

Intermittent fasting and the ketogenic diet seem to go hand in hand.

That’s because fasting may help support ketosis and helps the goals of the ketogenic diet, such as weight loss, mental clarity, and other health benefits.

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Many people are using intermittent Fasting (IF) to improve overall health, reduce meal prep and decision fatigue, and remove common obstacles on the ketogenic diet. We’re going to explain what it is, go over the benefits and risks, and walk you through how to safely incorporate it into your life, if it’s something you want to try.

What is Intermittent Fasting (IF)?

Intermittent Fasting more accurately describes an “eating pattern” than a “diet.” With IF, you cycle between periods of fasting and eating. It doesn’t dictate what to eat; it dictates when to eat.

Is Intermittent Fasting Safe?

You’ve probably heard that to keep your metabolism chugging along, you should eat every 3-4 hours. But going through periods of fasting is actually more “natural” than eating every few hours. That’s because our ancestors (the hunter-gatherer ones) didn’t have the convenience of 24/7 access to food. They didn’t have restaurants, grocery stores, or refrigerators. They sometimes had to go extended periods of time without food due to availability. Fasting is also a part of religions, including Islam and Buddhism. In other words, humans are physically able to function without food for extended periods of time.

How to do Intermittent Fasting?

By limiting the hours you eat, the idea is that you’ll consume fewer calories and lose weight. Intermittent Fasting only works as a weight loss method if you don’t compensate by eating too many calories during the eating periods. It’s also critical that you eat healthy foods when you do eat. Binging on junk food after hours of fasting won’t do your health any good.

The Benefits of Intermittent Fasting

While weight loss is the most highly touted one, research shows IF offers many other health benefits.

The Risks of Intermittent Fasting

For some people, Intermittent Fasting may not be beneficial, and could even be harmful. Consult your doctor prior to fasting if you:

For most people, hunger and temporary feelings of weakness are the most common side effects.

Drinks and Approved Foods During Intermittent Fasting

Water, coffee, tea, and other non-caloric beverages are fine. Coffee can help suppress your appetite so is popular during fasts. Avoid adding sugar to your coffee. A little bit of heavy cream is okay. The general rule of thumb is to keep it under 50 calories.

Supplementation and Intermittent Fasting

It’s not only okay to take supplements, but it could also help you feel better. Exogenous ketones are an example of a supplement that can help during intermittent fasting. Here’s how they can help:

  1. Enhance weight loss. Ketone supplements, such as KetoLogic BHB, in conjunction with a low-carb/high-fat (LCHF) diet, can help you achieve a state of ketosis, which can aid weight loss. It’s important to clarify that ketone supplements do not cause weight loss; instead, they cause your body to enter a state where it uses fat as its primary source of fuel. For those on a ketogenic diet, this usually translates to weight loss if the ratio of fat/protein/carb consumption is enough to induce ketosis.
  2. Provide energy and prevent lethargy. Another reason to take ketone supplements during fasting is that it can boost your energy levels when you’re feeling hungry or lethargic. KetoLogic BHB is a refreshing and re-energizing drink during afternoon slumps or after workouts.
  3. Help suppress appetite. Lastly, ketone supplements can help with all those hunger pangs from fasting. It reduces your appetite and helps curb cravings.

Ketones have few calories, and are generally acceptable when fasting. Another common supplement on an intermittent fasting diet is MCT oil or fats like ghee or grass-fed butter.

Many people will make keto “bulletproof” coffee with MCTs, coconut oil, or ghee or butter. This promotes mental focus and satiety while still providing some of the benefits of fasting and ketosis. The term for this is called “fat fasting” and there are a great many people who follow this protocol and report similar effects to full-on IF.

Intermittent fasting is just one of many methods that can help you lose weight and lead a healthier life.

But always remember that eating real (unprocessed) foods, staying hydrated, exercising regularly, and getting adequate sleep are the most important factors for health and wellness.

Intermittent Fasting


Looking for keto recipes to enjoy when you’re not fasting? Find tons of great recipes here.

New to keto and want to jumpstart your weight loss? Take the KETO 30 Challenge!

Need a sugar-free boost during your fasting periods? Try KetoLogic BHB!


[1] https://www.ncbi.nlm.nih.gov/pubmed/2405717

[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC329619/

[3] http://www.sciencedirect.com/science/article/pii/S193152441400200X

[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3106288/

[5] https://www.karger.com/Article/Abstract/212538

[6] https://www.ncbi.nlm.nih.gov/pubmed/2405717

[7] https://www.ncbi.nlm.nih.gov/pubmed/17291990/

[8] https://www.ncbi.nlm.nih.gov/pubmed/19793855

[9] https://www.ncbi.nlm.nih.gov/pubmed/3245934

[10] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC151440/


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