Interesting facts about our gut

Home to trillions of bacteria, your gut is definitely worth getting to know.

Did you know these surprising facts?



We are made up of more bacteria than human cells, and the majority live in our gut

Some scientists believe that our human cells are outnumbered by bacteria ten to one. Perhaps that means we’re only about ten per cent human!

Some scientists believe that the average adult has about 100 trillion bacteria living inside them. So there are more bacteria living in your gut than there are people on Earth.

Bacteria in your gut can weigh up to two kilograms

That’s how much 100 trillion bacteria weigh!

The gut goes all the way from your mouth to your bottom

It includes the oesophagus (the tube between your mouth and stomach), stomach and the small and large intestines. Food starts getting digested in the mouth and some types of fibre help it move through the gut.

If you spread your gut out flat, it would cover the area of an entire tennis court

Millions of circular folds squash it down so that it can fit in your body.

Your immune system is linked to your gut.

Did you know about 70% of the body’s immune cells are found in the gut?

And there is even more. Did you also know that about 95% of serotonin resides in your gut?

What is the Second Brain?

Find out how Scientists are proving the value of gut feelings

Fibre and Digestion

From the moment you eat it, fibre starts an epic journey through your gut.