For example, they’ve been shown to help with ‘leaky gut’ syndrome, which is a symptom of irritable bowel disease, as the acids help to “maintain a tight intestinal barrier”.

How to improve postbiotic health

Holland and Barrett’s Triple Action Biotic (a mix of pre-, pro-, and postbiotics) is the first postbiotic supplement on the market – but more are expected to come as research develops. In the meantime, there’s an obvious solution: eat more fibre. But it’s more complex than simply pouring an extra bowl of bran flakes, says Glover. “Not all fibre is created equally. Things like bran flakes, for example, or wheat bran, aren’t very good at stimulating probiotic bacteria to ferment and create postbiotics. You need prebiotic fibre, and a diverse range of it so that all the different strains of bacteria can be fed,” he explains.

The best sources of prebiotic fibre include:

-Kiwi

-Leafy, green vegetables

-Beans and pulses, such as chickpeas and butter beans

-Oats

The long-term answer surely lies in a diverse diet. Supplements are there to help and enhance that and could be helpful for healing and supporting a strong gut. Get on top of your postbiotics and you won’t just feel better, but you’ll be well ahead of the trend.

Postbiotics are set to be the next big thing in gut health – here’s everything you need to know