Dr Amir Khan

But it's a balancing act, isn't it?

Because antibiotics are life saving.

And if you're on, because lots of people are on antibiotics.

a long-term lifelong antibiotic because they might have a condition like cystic fibrosis or something which puts them at risk of infections.

And those people really, really, really need to focus on probiotic food to try and get that into your diet.

There's a very clear difference.

So a probiotic is something that contains live bacteria.

So yoghurt, fermented food, you're reintroducing those live bacteria.

A prebiotic is food for your existing bacteria.

So...

A banana is a prebiotic because it will feed some bacteria in your thing.

A legume is a perfect prebiotic.

So feeding them and replenishing them, that's what pros and pres do.

Most gut supplements are probiotics.

They are something that contain live bacteria that are thought to be helpful to your gut.

And yes, it is worth taking that.

But you can also just get some kimchi or get some sauerkraut or get some yogurt and that would do the same thing.

So when we're looking at food categories, we use something called the Nova food category and it categorizes food into four things.

So you've got Nova group one, which is whole foods.

And these are things like eggs and milk.