How Long Does It Take To Go Into Ketosis When Fasting?

Share on facebook

How Do You Fast Into Ketosis?

It is a common misconception that you will start to burn muscle if you fast. In fact, when you are fasting, you have higher than normal levels of human growth hormone, which protects muscle. Many body builders now work out on a fast because the hormonal changes during fasting allow them to burn more fat and build more muscle. I like the explanation in Jason Fung’s book: we store fat, not muscle, so when we fast it makes no sense that we would start burning muscle and not fat. He says it would be like saving up firewood all year round and then, when winter comes, throwing you sofa into the fire! What in reality happens is that you first burn off all your glycogen stores, and then you switch to burning fat. You don’t need to do anything, just don’t eat! Stay well hydrated using water, black tea and coffee, and herbal teas. Someone mentioned high protein meal replacements: these won’t allow you to enter into a proper fast, and in fact excess protein converts to sugar in the body via gluconeogenesis. Here is an article I wrote on the benefits of fasting and the different ways to fast, including intermittent fasting and longer fasts. Continue reading >>

Share on facebook

Popular Questions

  1. DustinX

    Fasting to get into ketosis... faster?

    The other day I remembered that when I was young I had to get a physical. Well to keep the story short, I hadn't eaten much the day before and didn't eat breakfast before I went. After he looked at the urine results I remember him asking if I ate breakfast, he said he asked because I had alot of ketones in my urine.
    I was thinking, would it be possible to do a 24 hour fast to enter ketosis and then the next day continue a keto diet (I'm saying for when you're first starting a keto diet). Maybe 12 hours of fasting would get you into ketosis? I'm not sure, but I figured this could be a quick way to get into ketosis without having to wait 3 or even 4 days when you first begin.

  2. Eileen

    If you are young and active, then you'll get into ketosis quickly. Someone who is older or less active will take longer the first time.
    Fasting will get out into ketosis, but so will eating high fat meals. Don't know about you, but I get very crabby if I miss my breakfast.

  3. jg_girl088

    yeah it sure will. I remember reading in Good Calories Bad Calories that the original recommendation for the ketogenic diet was to start with a 48 hour fast, however, atkins was the one who changed it to a 2 week induction period of minimal carbs.

  4. -> Continue reading
read more close

Related Articles

Popular Articles

More in ketosis