10/12/2026
I’ve been going down a research rabbit hole on probiotics lately, and even as a dietitian, I’ve found myself rethinking a few things.
Because we spend a lot of time talking about what we can ADD to our microbiome without thinking nearly as much about the environment we’re asking those microbes to live in.
When should you actually take a probiotic?
Do you need one in the first place?
Do those bacteria actually take up residence in your gut?
What about fiber, fermented foods, sleep, stress, movement, medications, alcohol… even when we eat?
There is A LOT here. And, as is often the case with nutrition, the science is far more nuanced than “good bacteria vs. bad bacteria.”
Probiotics can absolutely have a role. In fact, we have good clinical evidence for specific strains, at specific doses, for specific purposes.
But your probiotic, if you take one, is only one small piece of a much bigger ecosystem.
So maybe instead of only asking:
“What probiotic should I take?”
we should also be asking:
“What kind of environment am I creating for the microbes already living there?”
Fiber. Plant diversity. Fermented foods. Movement. Sleep. Stress. Alcohol. Medications. Meal timing.
They all help shape that environment, too.
I’ll be sharing more of what I’ve been learning over the next few weeks, including a few things that surprised me.
For now, look at what you’re already feeding your gut.
Beans? Berries? Whole grains? Nuts and seeds? Vegetables? Fermented foods?
Tell me one gut-supportive food you eat regularly. I’d love to hear what’s already on your plate.
