See this:
For 5-6 month (maybe longer), I tried a lot of different probiotics (even the highly-touted “soil-based” versions), with various prebiotics (potato starch, etc.) and can say I could not tell a benefit. Though I still like fermented pickles.
I also tried this yogurt, which I made at least 5 times and ate all of:
I could not tell a benefit to this.
My problem with these is that I’m trying to eat real food. If I have to specially eat and buy things to “help” me, I find that difficult, unless I buy and use them for a short time and they permanently make some change.
The problem as I see it is there is no way to know they make a change, and any change they do make is likely to be transitory. If you do research about this, you realize even if you sample your poop, if you send it to two different testing facilities, you get two different results. If you take samples from two different “locations” of the same poop and send it to the same testing facility, you can get two different results. And the study above showed that you might just be pooping out the probiotic, and not affecting the actual gut biome.
Personally, I’ve pretty much given up on probiotics/prebiotics. I will still eat fermented foods and maybe some yogurt, but I doubt they have much, if any benefit.
What are your thoughts on probiotics?