
The only way to create more diverse gut flora is to ingest probiotics. The Gut Health Project recommends adding probiotic-rich foods to your diet and taking a daily high-quality probiotic supplement.
There are a number of probiotic-rich foods that you can add to your diet, including:

Don’t rely solely on probiotic-rich food to improve your gut health, though. In reality, the amount of probiotic-rich foods you would need to eat in order to get sustainably great results is daunting. These foods tend to be expensive, hard to find, and not to everyone’s taste preference.
