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Our bodies are home to approximately 100 trillion bacteria living inside us and on us-a vast community known as the microbiome. The Secret World Inside You explores the rapidly evolving science that is revealing the complexities of the human microbiome and reshaping our ideas about human health, offering new perspectives on common health problems including allergies, asthma, and obesity. 

2:45 video activation energy using snowman analogy

Digital resources using sea urchins to engage across topics

When it comes to what you bite, chew and swallow, your choices have a direct and long-lasting effect on the most powerful organ in your body: your brain. So which foods cause you to feel so tired after lunch? Or so restless at night? Mia Nacamulli takes you into the brain to find out.