Bacteria in soil makes us happy?

[Candy]

What does soil and Prozac have in common??

Apparently they both have similar effects on the brain! Except with soil there'd probably be no side effects. ?

I've been hearing and reading more and more about the benefits of getting your hands dirty by doing a bit of gardening or digging or just spending more time outdoors in the dirt; for adults and children alike.

Apparently there's a natural antidepressant in soil called mycobacterium vaccae which releases seratonin and can improve mood and brain function. Does that mean that any contact with soil is beneficial?

In a study conducted by a London-based oncologist, cancer patients were inoculated with strains of m. vaccae and it was revealed that the patients showed fewer cancer symptoms and improved health and vitality.

Any gardeners who can confirm this? I've started a small "urban garden" on my terrace, but I must admit I don't like getting my hands dirty when mixing my compost with soil ?