17/06/2026
Gut health is the new trend at the moment, but is it actually important?
We have trillions of microbes living in and on the human body.
The highest number are found in our gut.
These microbes have a symbiotic relationship with us, meaning we support them, and in return, they support us.
Our gut is a bit like a tropical fish tank.
You’ve got lots of different fish, or different types of bacteria, that you need to keep alive.
Alongside that, you also need to make sure the conditions in the tank are right, such as maintaining the correct pH balance and keeping the ecosystem healthy.
Now imagine you got the temperature of the tank slightly wrong and started feeding the fish the wrong food.
This is similar to living on a diet high in ultra-processed foods, sugar and alcohol.
Over time, you start polluting your fish tank and wiping out certain beneficial strains of bacteria that help maintain a healthy ecosystem.
This can then start having a systemic effect around the body.
The communication between the gut and the brain can gradually become altered — this is known as the gut-brain axis.
Poor gut health has been linked with obesity, depression, Alzheimer’s disease and much more.
The walls of the large intestine can also become more permeable, allowing unwanted substances to move into the bloodstream. This may contribute to bloating, diarrhoea, constipation, nausea, unsettled digestion and increased immune system activation, which can trigger low-grade inflammation.
Now, this doesn’t mean you need to completely cut out ultra-processed foods, sugar or alcohol.
You can still enjoy them as part of your diet.
But they should only make up a small part of it.
Look after your gut.