Yo, I stopped eating sugary stuff like two months ago and I noticed my digestion completely changed. Some buddies tell me it's my microbiome adapting, but I'd like to understand how exactly that works. Do the bacteria in my gut die or do they just change their behavior?
The bacteria that were feeding on sugar lose their buffet and gradually disappear, while other species that digest fiber and the other stuff you're eating now develop in their place - it's not just a change in behavior, it's a real restructuring of your bacterial population.
After two months you're probably right in the middle of the transition, so that explains why your digestion got all messed up: the new bacteria produce different compounds and your system has to get used to it. Are you getting bloating or any particular changes in your stools right now?
It's not just a matter of them disappearing or adapting - it's more like a competition. The species that loved sugar lose their energy source and decline in numbers, while others take their place. The thing people often forget is that this change takes time and can really mess with your stomach for a few weeks (bloating, changes in bowel movements, all that stuff). Your friends are right in principle, but it's not instant or painless.
Your buddies are right in principle, but it's way more nuanced than just bacteria disappearing or competing. What's happening is you're starving the bacteria that thrive on quick sugar, but at the same time you're probably changing your overall intake - more fiber, maybe other foods you weren't eating before. So your microbiome rebalances differently, and the changes you're noticing (bloating, different digestion) that's literally this transition happening, not just colonies dying off but a real reorganization. It can take weeks or even months for things to stabilize completely.
Log into answer.
