How our gut bacteria changes the way we feel

Ever wondered what made you feel moody? Why do some people struggle with their mental health? The answer lies in our gut, with the bacteria found there.

When we are born bacteria populate our gut. From here the gut microbiota influence how aspects of our brain develop.

How our brain develops has long term implications for the way we feel during our life. And the diversity of our gut bacteria can also play a roll in our mental health.

Body of Evidence is a video series from BBC Future unravelling medicals myths and curious health conditions.

Video script: Ed Barrett