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How Does Ketosis Affect The Body?

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Ketosis

Tweet Ketosis is a state the body may find itself in either as a result of raised blood glucose levels or as a part of low carb dieting. Low levels of ketosis is perfectly normal. However, high levels of ketosis in the short term can be serious and the long term effects of regular moderate ketosis are only partially known at the moment. What is ketosis? Ketosis is a state the body goes into if it needs to break down body fat for energy. The state is marked by raised levels of ketones in the blood which can be used by the body as fuel. Ketones which are not used for fuel are excreted out of the body via the kidneys and the urine. Is ketosis the same as ketoacidosis? There is often confusion as to the difference between ketosis and ketoacidosis. Ketosis is the state whereby the body is producing ketones. In ketosis, the level of ketones in the blood can be anything between normal to very high. Diabetic ketoacidosis, also known as DKA, only describes the state in which the level of ketones is either high or very high. In ketoacidosis, the amount of ketones in the blood is sufficient to turn the blood acidic, which is a dangerous medical state. When does ketosis occur? Ketosis will tak Continue reading >>

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  1. W. Prins

    My experience pretty much mirrors Aarons and I also agree with Teymur. By and large I can get by with less sleep than before and when I do sleep I seem to benefit more from it, which is to say I seem to recover more quickly. In the very early days I had stints where I had some sleep disruptions of various kinds (not being able to get to sleep when I wanted to and so on) but resolved itself in time.

  2. Aaron Goold

    I agree with Jbs. This is just an n=1 answer, but I need less sleep after being in ketosis for at least a week. I used to need 9 hours of sleep. Now I can get 6-7 and feel fine. However, sometimes I wake in the middle of the night and cannot fall back asleep. I've heard from Dave Asprey (Bulletproof guy) that this is common with ketosis. He suggests having some quality carbs before bed. I tried, but haven't noticed a difference. The weird part is, some weeks I'll get only 5-6 hours a night due to work/stress/etc. I'll be tired the first 10-15 minutes, then feel fine all the way until bed. I still prefer to get 7-8 hrs, but now I'm not dying when I don't get it.
    Update: Wanted to add, I also practice intermittent fasting. Not sure how much that also affects sleep/ketosis, but something to consider in my response.

  3. Teymur Mammadov

    Not sure what you mean by sleep “architecture” - I’m going to assume you mean sleep patters (possibly?). Some people who go extremely low-carb (ketosis may have different degrees, you can be considered to be in ketosis with both 0.7 mMol and 4 mMol, but they are, obviously, very different levels of ketones) or no-carb often report sleep pattern disruptions - but individual reactions may vary. If that is an issue, it is recommended to consume low amount of healthy carbs at night before sleep (that’s one of the reasons I personally prefer consuming my carbs - however low - at night) - not so much as to take you out of ketosis, but enough to not interfere with your sleep.

    If you really meant to ask how ketosis affects sleep requirements - I would tend to agree with other writers: typically you might see a reduction in the need to sleep as you get more into ketosis and the associated lifestyle. I do personally consider that moderate ketosis is healthier than the so-called “balanced diet” - and healthier bodies need lees sleep. This effect, however, is not something that happens immediately. It requires you to become generally keto-adapted and make this a lifestyle. In other words - do not expect that by slipping into ketosis first time you would suddenly wake up refreshed after 5 hours of sleep :)

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