How Long Does It Take To Get Your Body Into Ketosis?

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Ketogenic Diet Faq

With all the new people finding, switching, and transitioning into a low carb diet, I figured it was about time I put together an FAQ on all the common questions that are asked when someone is starting out. I don’t go too in depth in the answers, but I tried to give a direct answer and then link to a more in depth article on the topic to help you fully understand it. If you have any other questions you’d like to be added, changed, or are unsure about – please feel free to leave a comment below so I can fully explain, or make changes to the answers on this page. Best wishes, and to all the new people out there – good luck and happy dieting! Frequently Asked Questions Click any of the questions below and it will take you to the answer. How Long Does It Take To Get Into Ketosis? A ketogenic diet is not a diet that you can whimfully choose to go on and off of at any point. It takes time for your body to adjust and go into a state known as ketosis. This process? Anywhere from 2 – 7 days, depending on your body type, activity levels, and what you’re eating. The fastest way to get into ketosis is to exercise on an empty stomach, restrict your carbohydrate intake to 20g or less Continue reading >>

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  1. ls737100

    How about some science to it. Your liver will store about 500 calories of glycogen first, then muscles will store about 2,000 calories of glycogen. Interesting thing is once glycogen is in the muscle there's no way to pull it back into the bloodstream. If you eat a ton of carbs in one sitting you'll overload your muscles and liver and it'll get converted to fat. So seems like the max stored calories is about 2,500. Your brain uses about 600 calories a day, so, in 24 hours it should burn through everything in the liver and switch to ketones. So, seems like the max would be 24 hours before your brain was on ketones, might take longer for some muscles to be depleted and switch. Oh, and btw, there are only about 5 grams of glucose in the blood stream, so negligible.

  2. Naonin

    If you eat a ton of carbs in one sitting you'll overload your muscles and liver and it'll get converted to fat.
    De Novo Lipogensis (DNL) rarely seems to happen with short term overfeeding of fat free, fructose free carbs. http://caloriesproper.com/are-carbs-stored-as-fat/
    But yes, you're correct, it's about 24-36 hours without eating that puts a human into ketosis, which I believe we enter ketosis faster than any other animal. http://caloriesproper.com/ketosis-in-an-evolutionary-context/

  3. illogic_bomb

    So, would it be your opinion that fasting for 48 or 72 hours would bring you into Ketosis instead of 2-3 weeks that has been reported by Dr. Tim Noakes?

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