Kombucha fast?

Answered on December 19, 2014
Created December 14, 2014 at 5:16 PM

Do you think a kombucha fast would be effective in repopulating the gut with healthy bacteria? I'm afraid of eating other foods while I do this because I don't want to feed the bad bacteria.

Frontpage book

Get FREE instant access to our Paleo For Beginners Guide & 15 FREE Recipes!

3 Answers



on December 15, 2014
at 07:57 PM

Two problems with this: one, if you want to establish those bacteria you have to send them down with some bacteria food. Potatoes or apples are probably a decent source.


Second, kombucha is bacteria and yeasts. There is no reason to get yeasts in your gut. Vinegar is mostly bacteria, as are sauerkrauts and olives and other lactic ferments. That may be a better option.



on December 15, 2014
at 11:24 AM

It might help depending on what's in the kombucha, but the problem is that you don't know the exact species in there how how they'd react to your existing gut flora.


If you use commercial kombucha you'll find they're not very strong, so you may have to very carefully start your own, using an existing unflavored kombucha along with plain black tea (don't use Earl Grey or other flavored teas as their essential oils will kill off some of the bacteria.)  Make sure you sterilize the container you put them in and carefully control the temperature.  Find a kombucha recipe and follow it crefully.


The good news is most Kombuchas contain Saccharomyces boulardii, a beneficial yeast that kills off candida, as well as bifido which is harder strain of probiotic to get from other sources.


The bad news is that unless you allow it to ferment until it's very strong, almost vinegar like, you're not really doing a fast since there's a lot of sugar left over (this is why the commercial versions suck, if they over ferment, it's like vinegar and nobody would want it.) You'll probably need to dilute it before you can drink it as it's very acidic.  The trouble with the left over sugar is that it will feed the bad guys already in your gut flora.


You'll also want to do this slowly as these guys will do battle with each other and the end result could be a Herxheimer reaction with full on pain and flu like symptoms.  Go very slowly.


You'll also want to feed new your friends, so you'll need to use something like raw plaintain flour for its resistant starch, so it's not a great idea to do a full fast either.


on December 19, 2014
at 12:17 AM

I don't think so.  Fast if you want to lose weight, clear your system a bit, or just give yourself a break (it's actually nice to not have to prepare, eat, and digest food).

Probiotics are probably best taken with meals.  I have kombucha about twice a week with lunch.

Answer Question

Get FREE instant access to our
Paleo For Beginners Guide & 15 FREE Recipes!