What Is Keto Flu? HOW TO GET HELP

What Causes Keto Flu – How To Get Help

Keto influenza is your body’s natural reaction to a carbohydrate restriction diet.
You may experience symptoms like headache, brain fog, chills, dizziness, digestive problems, irritability and insomnia among other things.
The symptoms typically last from a few days to two weeks.

Metabolic flexibility, which means your ability to adapt to different fuel sources, dictates the severity of symptoms.
Keto influenza agents include: proper hydration, bone broth, electrolytes such as potassium, magnesium and sodium; eat more good fat as MCTs, rest and sleep, do mild exercise or meditation, take activated charcoal, exogenous ketone supplements and, in some cases, eat more carbs.

Read about 5 common keto mistakes and what you can do about them.

You started a keto diet and just don’t feel it. Instead of all the amazing ketogenic benefits – higher fat burning, keto clarity, increased energy, and just well-being – you are irritable at the dinner table, dizzy all day and tired.
The culprit of this miserable feeling? Oh, right: the keto flu. It is a natural reaction that your body undergoes as it changes from burning sugar to fat for energy. Your body needs to make a few changes in the way it runs.

Read on to learn what is in store as you rev up your internal engine, keto style.

What is keto flu?

Keto Influenza is your body’s natural response to carbohydrate restriction. If you have started, you probably know that a keto diet is high in fat, moderate in protein and low on carbohydrates and involves burning fatty acids for energy instead of glucose coming from sugar and other carbohydrates.

While fat is typically a spare fuel source, you will get it if there is not enough glucose in your diet. Ketosis is a fancy word to burn fat instead of carbs, and that is the secret weight loss weapon for the keto diet.

  • What are the symptoms of keto flu?
    Brain fog
    Headache
    Goosebumps
    Sore throat
    Confusion
    Dizziness
    Insomnia
    Irritability
    Muscle tenderness
    Nausea
    Bad focus
    Abdominal pains
    Sugar cravings

How long does the keto flu last?

The keto influenza generally kicks into the 24- to 48-hour mark.
The symptoms typically last from a few days to two weeks. Most people experience these symptoms one or two days – depends on your metabolic flexibility, which means your ability to adapt to different fuel sources.

Metabolic flexibility is influenced by both genetics and lifestyle habits. For example, how you ate before going keto can predict the severity of your flu-like symptoms. If you ate a diet that is low in refined sugar and starch, you are likely to experience only mild symptoms. A diet high in sugar and carbohydrates can set you up for greater symptoms (especially from the sugar).

What causes keto flu?

What exactly causes keto-flu symptoms? When you limit carbohydrates, your body needs to learn how to burn its backup energy source.

Changes that occur when you cut carbohydrates:
Water and Sodium Flu: When you use fewer carbohydrates, insulin levels fall and signal your kidneys to release sodium from the body.
This results in a loss of up to approx. 10 pounds of water weight as water shuttle sodium from your body.
All this usually happens in the first five days.

Glycogen pathways and low insulin levels cause dizziness, nausea, muscle cramps, headache and gastrointestinal problems such as constipation and diarrhea. Drink plenty of salty fluids and electrolytes – it will relieve some of these cellular symptoms.

T3 thyroid hormone levels may fall: T3 is a thyroid hormone. Dietary carbohydrates and thyroid function are closely linked, so when cutting carbs, T3 levels may decrease. Lower hormone levels can leave you with brain fog and fatigue.

Increased cortisol levels: The T3 hormone change is closely linked to a third hormone change: higher cortisol levels. A ketogenic diet tells your body that you are in hunger mode. In an effort to increase the energy level of a carb-restricted diet, your body triggers the release of stress hormones, ie. cortisol. If you experience irritability and insomnia, it is a clue that your cortisol levels have jumped. Don’t Worry: As you adapt to exploit fat and ketones as a new fuel source, your cortisol levels fall to their old levels.

8 thoughts on “What Causes Keto Flu – How To Get Help”

  1. I have only heard a little about Keto flu and it seems to be an interesting health topic as it can arise from the most minor causes and even show some minor symptoms, how can I learn more about the Keto flu because I would really like to be abreast with the identification of the sign and symptoms

    1. Hi Oneal, if you want to get the ketogenic benefits without getting the Keto flu, then you can go low on in refined sugar and starch, a week before going starting the keto diet. 

      You can read this article to avoid the most common mistakes:https://my-best-shape.com/keto
      But if you want to get it right the first time without the flu, and really want to get into ketosis fast then you shouldt go for Exogenous Ketones and MCT… read more about that here: https://my-best-shape.com/best

      Have a nice weekend.:-)

  2. I have never heard of this before, but looking at all of the symptoms I feel as tho I have them all. I am not on a keto diet but perhaps it is due to my diet anyways. I wouldnt say that I have a set regime when it comes to food but perhaps I really need to change my eating habits. I never once thought that any of this could be connected to food and diet. Thank you tho, I learnt something I never really realized before. Great website, I will be sure to be back here.

    1. Hi Alexandra thank you for the comment.  If you haven’t tried to change your metabolism from running on carbs to be running on fat/ ketones. It’s quite amazing if you haven’t tried it before.  You can use it just to have the feeling and the mental clarity, but of course you can also lose weight or gain weight. You can use this Macro  calculator  to find out what to eat depending on your goals.https://my-best-shape.com/keto

       Have a beautiful day 

  3. This ia the my first time reading about the keto flu and i want to definintely learn more about it. Also, what is the keto diet all about and is not eating carbohydrates good for the body?. If you also on a keto diet and u start having keto flu, can it cause serious damage to your body. Please helo me with a basic understanding of the keto diet and benefits. Thanks

    1. Hi, Aweda Thanks for commenting. Yes, carbohydrates are excellent, but you can change your metabolism to run on fat instead of carbs. If you haven’t tried it, you should try. Our body is an incredible hybrid machine, and most people don’t know that they can completely change your bodyes fule. And no the keto flu can not severely damage the body.

      Here is a link to an article with some of the benefits.https://my-best-shape.com/how-

      Have a nice weekend. 🙂 

  4. Hi, 

    Thank you very much for sharing with us such an important blog. If I did not read this blog I can not find the details about “Keto influenza”. This blog will be very much helpful to the others who want to be aware of. The most fundamental thing I basically gain from here is keto flu is a natural reaction that your body undergoes as it changes from burning sugar to fat for energy. I will definitely share this blog with my friends.

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