Is your gut microbiome as healthy as it could be? We often think of digestion as just a way of processing food, but your gut plays an integral role in your overall wellbeing, influencing everything from inflammation to immunity.

In this episode of Which? Shorts, we explain what benefits a healthy microbiome can provide for your overall wellbeing, and how you can decide how likely you are to benefit from taking probiotic supplements.

Plus, we reveal what we did to test some of the most popular prebiotics and probiotics to decide which ones are worthy of our coveted Which? Best Buy.

This episode is read by Erica McKoy and is based on an article written by Martha Roberts, originally published in the May 2026 issue of Which? magazine.

Read our reviews of the probiotic we’ve tested on our website & sign up for our free fortnightly Healthy Living newsletter.