Is your gut health linked to your mental health?

Two startling findings:

"Mice are anxious and prefer dark, enclosed spaces. But if they’re born and raised without gut microbes, they freely scurry around light, exposed areas.

When microbe-depleted rats get fecal transplants from people with severe depression, they act more sad and anxious than rats that get transplants from people without depression."

https://www.nutritionaction.com/daily/brain-health/is-your-gut-health-linked-to-your-mental-health/