1. Yoghurt
Live yoghurt is an excellent source of so-called friendly bacteria, also known as probiotics. Look out for sugar-free, full-fat versions and add your own fruit for a tasty breakfast. Yoghurt drinks can contain high numbers of bacteria that are good for the gut, far more than you would find in a normal yoghurt. Do be mindful though as they can have a high sugar content.
2. Kefir
This probiotic yoghurt drink is made by fermenting milk and is packed with good bacteria (which can help to reduce a leaky gut). It originated in the mountainous region between Asia and Europe, as well as Russia and Central Asia. It also makes a great addition to smoothies and soups, or you can use it as a base for salad dressing (add lemon juice and seasoning).