[msbroadf]

I had my entire large intestine removed over several operations, and i felt no difference in my mood

[jliptzin]

Wow, usually the first step is to prescribe antidepressants

[msbroadf]

No, it was removed for ulcerative colitis. If gut bacteria affected mood I would have noticed now I have a lot less but there wasn't any change.

[Fomite]

The usual issue is not the overall amount of gut bacteria, but the composition. While bowel surgery can disrupt the composition of your gut flora, it need not have to, and if there was no major accompanying lifestyle changes, it's possible it eventually returned to equilibrium.

[jliptzin]

Sorry to hear that. My friend has UC and it's a really tough thing to have to deal with. Best of luck to you.