Are there negative effects to drinking (a little) coffee while fasting?

Are there negative effects to drinking (a little) coffee while fasting?

You can check the answer of the people under the question at Quora “is drinking coffee considered fasting

0 thoughts on “Are there negative effects to drinking (a little) coffee while fasting?”

  1. Drinking a water is fine. Drinking coffee with caffeine in it shuts off the fast. The idea of the fast is to create a hunger that forces the body to kick stored toxins back into circulation as it scavengers the tissues for energy (sugar). Caffeine is perceived by the body as sugar, thus food so the fasting process ends and purpose and benefits of the fast are lost. Once the toxins are back in circulation the body rejects them as food because they aren’t food. The toxins are excreted in the urine and in your sweat. If you eat or drink something during a fast you are merely going hungry , not fasting. A fast has to last at least three full days to BEGIN to provide healing benefits. A week is about right most of the time.

  2. The question is rigorously about potential negative effects of drinking coffee while fasting. And it is no specified which kind of fast.
    In general, while I agree with the fact that pure coffee cannot be considered a nutrient and is not perceived as such by the metabolic system, yet by its ergogenic properties it may provide undesired stimuli to the the biological processes related especially to the nervous system. In particular, it may interfere with the recovery and energy saving mode triggered by a fast, which expresses itself by a strong desire to rest and sleep.
    On the practical side though, a single coffee taken in the morning while fasting probably has little to no negative effects, if we can provide enough rest and sleep to the body.
    However, if we are determined to follow a water only fast we should eat or drink no macro- nor micronutrients, nor anything different from pure water. In such a way we are guaranteed that there will be no interference with the biological manteinance & repair processes initiated by the fast.

  3. If you’re a coffee lover and you want to do intermittent fasting, find out if you can still continue drinking your so-loved coffee by watching this video:

    If you’re new to fasting Fasting TV has a free audio book on Intermittent fasting for health and weight loss. While the whole idea of fasting is interesting some places really do make it more complicated than it needs to be. This audio book gives you a complete guide to follow taking it back to basics and is all about the results.
    This video might help if you haven’t seen it already.
    There are many ideas as to what counts as being in a fasted state but the main idea is to know why you’re fasting for
    The biggest benefits you get from a fast come from (1) autophagy and (2) ketosis. Coffee boosts both of them and it can have a positive effect on burning fat, cleaning your cells and reducing blood sugar.
    However, too much coffee can have a negative effect by increasing too much cortisol and blood sugar.
    To avoid that, you can combine coffee with green tea. Green tea also promotes autophagy and ketosis but it also has L-Theanine which is going to prolong the effects of caffeine
    Combining theanine from green tea and caffeine from coffee will prevent the jittery side-effects of coffee while creating a much more sustainable and stable energy response
    So, bottoms up and drink coffee and green tea while fasting
    I do not own any of the video clips used in this video. The legal rights belong to the legal copyright holders of said content. I have used them under the ‘fair use’ policy and have done so for entertainment and educational purposes only.

  4. No. In fact drinking coffee has *positive effects* while fasting! 1) its enjoyable. 2) coffee curbs appetite. And 3) coffee increases metabolism! Win, win win.
    Coffee as well as other 0 calorie drinks do not break a fast because they do not raise insulin. Artificial sweeteners in general (use the liquid forms if possible) also do NOT spike insulin so feel free to enjoy those as well.
    For coffee there is a great “hack” I learned and many have confirmed that it is valid. You can have a splash of heavy whipping cream with your coffee. Don’t go crazy because it is 50 calories per tablespoon but heavy whipping cream will NOT spike your insulin because it is 100% fat and it is the kind of fat that just mixes in with the fat already in your blood powering your body during your fast. Your body actually won’t know anything happened. Does the cream technically break the fast? Yes if you are trying to adhere to the technical definition of a word. But that is not really what we are trying to accomplish with IF. We are trying to keep our insulin at base during the entire fasting window and this trick allows us to do just that while making our coffee more enjoyable. Note: this trick does not work with milk or half and half – those do raise insulin.

  5. No.
    Coffee does not compromise the fast – think of it as basically (and largely) water with caffeine, coffee oils and a few other compounds dissolved in it. I don’t know what kind of fast you are talking about (there are strict religious fasts that do not allow drinking during certain hours – I’m assuming you are not talking about those and are talking mostly about intermittent fasting ), but the benefit of most fasts comes from restricting macronutrients in your food and, thus, kicking the body into a “cellular clean-up mode” that involves multiple mechanisms – apoptosis (programmed cell death), autophagy, hormesis, etc. All of this gets triggered when your body enters “starvation mode” – when you have no energy derived from food. This is typically preceded by depletion of glycogen reserves and a shift to ketosis .
    From that perspective, coffee doesn’t really deliver any macronutrients to compromise the fast. One key point, however – it has to be black (no milk and no sugar – any one of these will take you out of ketosis, raise blood sugar and break the fast). Caffeine does not shut off the fast and it is definitely not perceived by the body as sugar, as is suggested in the previous answer to this question – the metabolic pathways these two follow are drastically different and one is never a substitute for the other.


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