Gut bacteria and the brain

EVER had a gut feeling? Well, there’s growing belief that the trillions of microbes living in your intestines may be dictating those emotions.

In the words of Professor John Cryan, a neuropharmacologist at University College Cork in Ireland and an expert in the gut microbiota, “these pesky little critters might be the master puppeteers of our brain and our body”.

The human body contains 10 times more microbial cells than human cells, with a collective weight of around 200g.

So it is perhaps no great surprise that the weight of