We could all use a little kindness in our lives. Surprisingly, a little altruism can actually have big benefits for our own health! Michael discovers that small acts of kindness can not only boost your mental health and improve your relationships but also boost the immune system. Dr Tristan Inagaki from the San Diego State University explains to Michael how her research has revealed that those performing acts of kindness had lower levels of systemic inflammation, which could reduce the risk of many major diseases. Meanwhile, our volunteer Sam enjoys finding ways to consciously incorporate kindness into his week.

Series Producer: Nija Dalal-Small Science Producer: Catherine Wyler Researcher: Sophie Richardson Researcher: Will Hornbrook Production Manager: Maria Simons Editor: Zoe Heron A BBC Studios production for BBC Sounds / BBC Radio 4.