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Dr. Tallis Barker, D.Phil., Nat.Dip., NA.Dip., Naturopathic Water Fasting Consultant & Coach

Pills, powders and potions: the reality of taking supplements while fasting

One question which persistently recurs on waterfasting.org is whether or not you should take supplements while water fasting. The majority of people want to know about vitamin supplements and, occasionally, even protein supplements. In this article I’ll deal with both, as well as other kinds of pills, powders and potions…

There are some people who take a hardline approach to water fasting – in other words water, water, only water. Personally, I do drink only water when I’m fasting, but I believe that everyone needs to find their own solutions, depending on the reasons that they’re fasting. This may include drinking herbal or green teas, or perhaps adding a slice of lemon to their water.

Taking supplements, though, is another step removed from the simple purity of drinking only water.

Vitamin supplements

Many people believe that they need to take vitamin supplements in order to live a healthy life. When it comes to fasting, this belief often takes on an added urgency. The logic – at least on the surface level – is sound, and goes something like this: ‘If I need to take vitamin supplements when I’m eating normally, then surely I need them even more when I’m not eating anything at all!’

Yes, in one sense the logic is sound. The only problem is that it’s based on the logic of your everyday working digestive metabolism and not the healing metabolism of ketosis, which takes over during a water fast and works completely differently.

I would suggest taking another approach – one which instead follows the logic of your healing metabolism:

So long as things are going into your body, toxins can’t come out of your body.

Whenever possible, it’s best just to get out of the way, and let your body get on with the business of cleansing and detox.

Okay, it’s true: toxins can’t come out of your body while food and calories are going in. It’s equally true that most vitamin supplements don’t contain calories. They won’t affect ketosis or radically change the biology of your fast. And so, in this sense, there’s nothing wrong with taking them.

Nevertheless, even if taking vitamin supplements doesn’t adversely affect ketosis, what good does it do to the fast? The truth is: little or none. They only distract your body and get in the way of natural cleansing and detox.

I’ll come out with it plain and simple: so long as you’re healthy, there’s no need to take vitamin supplements while fasting, and this is certainly the case if you don’t normally take supplements in everyday life. It’s also the case if you’re considering an extended healing fast and are worried about chronic vitamin depletion. No-one has ever died from vitamin deficiencies while fasting!

Instead, try to trust your body. It really does know best.

Humankind has been fasting for thousands of years, well before modern science came on the scene with ideas about vitamin supplements :-). I doubt our ancestors on the African savannah or in ancient India worried about it. They just got on with their fasts, trusting that their bodies would get on with the business of cleansing and detox.

It simply wasn’t a problem.

There are those who rightly say that the nutritional content of food is much lower nowadays than before monoculture (mass cultivation of one particular crop) revolutionised agriculture after World War II. This also means specifically that the vitamin content of what we eat nowadays is much lower than in the past.

Sad but true. Nevertheless, vitamin content hasn’t decreased to the point that it affects fasting. While fasting, the body conserves its essential reserves, and this includes vitamins.

If you’re worried about vitamins, a much better solution would be to eat organic in everyday life than take vitamin supplements while fasting.

Vitamin supplements for health issues

Okay, so if you’re healthy there’s no need to take supplements, but what if you already have a chronic vitamin deficiency?

This implies that you’ve already discussed the matter with your doctor. My advice, therefore, would be to return to your doctor and ask if it’s okay to stop taking vitamins temporarily: for a few days or whatever the duration is of your planned fast. If you have no other underlying health issues, there’s no need even to mention the word ‘fast’ if you feel that your doctor might panic or throw a temper tantrum – because it’s certainly true that the majority of MDs still don’t understand fasting or the benefits of fasting. Most likely, they’ll simply oppose the idea point blank. However, the reality is that in most cases skipping your vitamins for a few days won’t be a problem. Why? Because if it’s a chronic deficiency to begin with, you’ll probably need at least several weeks to regain healthy levels anyway, which means that only a few days without vitamin supplements won’t impact significantly on the long-term effect. Even so, do check with your doctor, especially if you’re planning a longer fast.

If you do have other underlying health issues which require you to take vitamin supplements, my advice would be to find a doctor who does understand fasting and discuss the particulars of your case.

The reality of taking protein supplements while fasting

This one is really easy. The answer is no, no, no!

Protein contain calories – 4 kcal/g to be exact. This is, in fact, exactly the same energy content of carbohydrates, which likewise contain 4 kcal/g.

In other words, if you’re taking protein supplements, you’re not fasting!

Why are we obsessed by the idea of taking supplements?

What causes so many of us to agonise over protein and vitamin supplements while fasting?

If you really think about it, the whole idea is crazy. Fasting means not eating. Taking supplements is its own form of eating. The two are totally contradictory.

Americans, in particular, worry about protein intake, despite the fact that the average American consumes more protein than anyone else on the face of the planet! Isn’t this also totally contradictory?

When people think and act in a contradictory manner, invariably a strong emotion is directing the decision-making process.

Nine times out of ten, fear is the driving motivation behind the belief that you ‘need’ to take supplements while fasting.

Why? Because big business has a lot of money invested in protein and vitamin supplements. Which means they have a lot of money invested in you buying their products. They want to convince you that you ‘need’ them.

How? By implanting fear: fear that without vitamin and protein supplements, you won’t make it through the day.

It’s no wonder these vested interests succeed in brainwashing so many people. Of all emotions, nothing is stronger than fear in influencing our behaviour. And given the consumer messages constantly bombarding us from ‘Big Food’, of course eventually we take the bait.

According to a recent article in the New York Times, Americans spend $30 billion dollars annually on vitamins, minerals and herbal supplements.* If protein powders are included, this constitutes as big a market as the entire organic food industry. In fact, pills, powders and other magic potions make up 5% of all grocery sales in the United States. Isn’t that crazy too?

Deeper fears

This isn’t the end of the story quite yet. Another issue attracts us to the idea of taking supplements while fasting.

The fears instilled by big business work in perfect harmony with and intensify the deeper fears already present in fasting.

It’s totally natural to feel a little fear when fasting. Going beyond your comfort zone in not eating begs the subconscious to carry this through to its logical end, which means playing with the idea of starvation and, ultimately, fear of survival and death (discussed further in my article Facing your Ego).

Even if it’s suppressed in your subconscious, the natural existential fear of fasting – that you won’t make it through the day – resonates perfectly with the fears instilled by Big Food, which likewise infer that you won’t make it through the day without spending lots of money on daily vitamin, mineral and protein supplements.

Supplements, therefore, feel like a way to cheat death. I know this may sound a little extreme, but it’s true. At the very least, anyone considering vitamin supplements while fasting does so because they fear for their health – which, in turn, is only one step away from fearing for their life. After, a total lack of health leads to a total lack of life. In other words, you fear death. Like it or not, the logic is plain and simple.

Water, pure water…

Whenever you’re water fasting and you find yourself seeking alternatives to drinking pure-and-simple water, it’s important to try and understand the reasons. This includes protein and vitamin supplements, but it also includes anything else, such as drinking herbal teas or lemon water.

There can be completely rational reasons for finding excuses not to drink water. For instance, if you have a caffeine addiction, you may find yourself attracted to the idea of green teas, as a means to prevent headaches from caffeine withdrawal symptoms. If you’re fasting for purely physical reasons, there’s nothing wrong with doing what you need to do in order to maximise the chances of finishing your fast. However, if you’re at all interested in what makes you tick, if you’re interested in understanding your subconscious and deeper levels of self, if you’re interested in trying to lead a conscious life, then you should know that usually the reason we look to alternatives besides water has nothing to do with clear logic and rationality.

We may try to justify supplements and teas through logical argument (and most of the time this isn’t too hard!), but deep down inside, there’s usually a deep dark emotion driving us instead. In order to truly make a rational decision about whether or not to take supplements, the best thing we can do is try to dig out those irrational forces inside us, bring them to light, and, making sense of them, act more consciously.

The vast majority of the time, pure-and-simple water really isn’t so bad.
In fact, it’s what we’re made of.

*www.nytimes.com/2016/11/15/well/eat/studies-show-little-benefit-in-supplements.html

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43 responses to “Pills, powders and potions: the reality of taking supplements while fasting”

  1. When would you suggest adding electrolyte infused water to the refeeding process?

    1. Hi A,
      Thanks for writing. I need answer your question with another question. Why would you want to add electrolyte-infused water to the refeeding process? Do you drink electrolyte-infused water in everyday life too? If so, why? The majority of people – especially if they’re not suffering from certain chronic health issues – don’t need electrolyte supplementation if they’re eating a balanced diet.
      Best,
      Tallis

  2. Hi Tallis,

    After going through your content, I understand that electrolytes also affect fasting negatively. In my case I have a mineral imbalance (sodium, chloride, magnesium) that is proving difficult to rebalance due to malabsorption issues. I supplement every day just to avoid the symptoms (i.e cramps). I want to fast precisely to address my digestive issues (IBS, malabsorption, and others). Any thoughts?

    Thanks,
    Edris

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Edris,

      Thanks for writing. The mineral imbalance you describe is actually quite common – and it’s true that it can feel a little like a Catch 22, in which an electrolyte-free fast is most beneficial and yet is the riskiest precisely because of the electrolyte imbalance in the first place. If you’re suffering from cramps in everyday life, this also says something about the degree of your mineral imbalance…

      As much as it’s totally safe for a healthy person to fast, it’s also true that someone in your position would benefit from daily coaching through any extended fast from an fasting expert such as myself, in order to ensure safety. I’m afraid there’s no single protocol which applies to all people here – in exactly the same way that drug-based medicine also requires one-on-one consultation with an expert (an MD in this case) in order to ensure safety.

      All the best,
      Tallis

      1. Hi Tallis,

        Thank you so much for responding. In that case, do I understand correctly that one can still fast with mineral imbalance with the help of a coach (and following a personalized protocol)? I postponed (indefinitely) a planned water fast at a fasting center because I was told it would be dangerous to water fast under the circumstances.

        Thanks,
        Edris

        1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
          Dr. Tallis Barker, D.Phil., Nat.Dip.

          Hi Edris,

          You’re very welcome. Actually, I coach many clients with mineral imbalances. Yes, you have to be careful. Yes, you have to follow a personalised approach. But it can certainly be done! And by the way, I’ve taken on many such clients who have been rejected by risk-averse fasting centers (including well-known fasting centers too…).

          When working with a client such as yourself, I would want to have access to recent bloodwork in order to understand the nature of the issue, as well as a more comprehensive discussion about your health history in order to understand any other potential issues which are less likely to show up in bloodwork (because believe me, bloodwork is usually just the tip of the iceberg!). Depending on the length of the fast, it would probably be a good idea to get further bloodwork done periodically during the fast, just to be on the safe side, as well as to change protocol if necessary. If you’d like to work together, you can reach me on the contact form at the bottom of the coaching page here:
          https://waterfasting.org/online-coaching-and-consultations-for-water-fasting/

          There’s always a way forward with fasting. It’s just a question of finding the right protocol!

          All the best,
          Tallis

  3. Hello, and thank you so much for all of this incredible info! Is there any data that shows how much of a negative impact teas have on ketosis during extended water fasts? I did an 18-day fast a few years ago using ONLY water, and I was very weak by the end. I’m getting ready to start a 12-day fast now, and I’m wondering if teas and/or water infused with lemon and/or cucumber would help me (probably psychologically more than biologically). But I don’t want to hinder my overall results. If I’m gonna do this for 12 days, I want maximum results!! 🙂 I’d love to hear your thoughts. I remember reading in one of the True North Center books years ago that ANYTHING other than water is a ketosis blocker, so I’m a little paranoid of trying anything else, in spite of all the other things I’ve ready online. Thank you!!

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Chaya,
      Thanks for writing. I think one of the biggest problems in fasting today is the oversimplification of publicly available information (which I’d also suggest applies to pretty much else in this social-media driven world!). It would be an oversimplification to say that teas are good or bad. Rather, they – like anything else you take during a water fast besides plain water – will simply have an impact. To this extent, the reasons that you’re fasting will dictate whether that particular effect is ‘good’ or ‘bad’.

      When it comes to teas impacting negatively on ketosis (and I assume you mean caffeinated teas here), I’d like to see what evidence True North has to bear this out. I personally have seen no such effect. In fact, based on what I’ve seen among over a thousand clients, I’d say the opposite is true. And think about it logically: caffeine increases metabolic rate, so theoretically, caffeinated teas should actually INCREASE ketosis.

      When it comes to specifically detox and healing, however, different mechanics are at work besides simply ketosis – and this is another potential example of oversimplification in the public sphere. Ketosis does NOT equate to healing or detox. It is simply a way of burning fuel. Specifically in terms of the impact that caffeinated teas have on detox and healing, it most certainly is negative. This is largely because the mechanics driving fasting detox and healing are not driven by ketosis per se, but rather by the drop in fasting blood sugar driving a shift from the sympathetic nervous system to the parasympathetic nervous system. This inherently involves slowing down! The best example here would be when someone has had an accident and is near to death, and doctors in the ER put that person into an induced coma in order to facilitate healing.

      So whether or not you allow tea in your own fasting protocol should be driven by the reasons you’re fasting. If it’s purely for weight loss, add the teas to drive your metabolic rate up. If it’s about detox and healing, you really do need to exclude them!

      Hope this helps,
      Tallis

  4. Hi! Can I take my levothyroxine and hormone patches and progesterone pills during a 14 day fast? Should I be taking a little bit of Celtic salt under my tongue each day?

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Brooke,
      Thanks for writing, and apologies for the slow response – I’m in the middle of moving house! When it comes to ovarian and thyroid meds/hormones, it’s extremely important to understand the reasons your taking them in the first place, so that you can adjust dosage if necessary – as well as by the appropriate amount. This is something which must always take place on an individual level, and so I’m afraid I can’t comment on a specific case here in a public space. However, I would say that dosage does usually have to change in such cases, if only because a given dosage acts differently on a fasting metabolism.
      Hope this helps,
      Tallis

  5. Hi Tallis

    What are your thoughts on using zeolite clinoptilolite while water fasting to help mop up and carry away the toxins released from the body?

    Best wishes

    Victoria

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Victoria,
      Thanks for writing. Everything you do to adapt a pure water fast is going to have an impact – usually with both positive and negative effects. The positive effects of zeolite (theoretically) would be to lower detox symptoms. The negative impact is that taking any substance orally is going to stimulate digestion and peristalsis – when, in contrast, the best thing you can do is to let your GI tract switch off as much as possible. I’d say this is something which should be examined on a case by case basis.
      Hope this helps,
      Tallis

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