Foods that go through a fermentation process like sauerkraut, kimchi, kefir, kombucha and yogurt help you maintain a healthy gut and may also help improve your mood.

Source: https://www.cnet.com/health/mental/8-foods-to-boost-your-mood/

The peas were cooked for only a minute or two then tossed over a snow-white mound of ricotta and thick kefir, to be scooped up with a tangle of pea shoots and crisp new radishes, fat as golf balls.

Source: https://www.theguardian.com/food/2023/may/21/nigel-slater-recipes-herb-foccacia-green-olive-dip-pea-salad-with-ricotta

‘Traditional fermented foods such as yogurt, kefir and kombucha naturally contain live microbes,’ she says.

Source: https://metro.co.uk/2023/01/18/how-kefir-kimchi-and-kombucha-can-put-the-fizz-back-into-your-life-18118098/

You can get this from foods like yogurt and kefir.

Source: https://www.cnet.com/health/mental/why-your-anxiety-may-be-to-blame-for-your-upset-stomach/