Immunologist Arya Ökten reframes the immune system not as a standalone defense force but as a body-wide communication network. Drawing on her own norovirus research, she shows how immune cells coordinate across the body's mucosal surfaces—such as the gut, lungs, and skin—and even carry protection from mother to nursing infant, which could lead to smarter, site-specific vaccines. She then follows the signals to the gut–brain axis, explaining how the microbiome and immune communication shape mood and mental health, and why something as simple as eating more fiber can matter. Arya Ökten received her bachelor's degrees in applied mathematics and biology from Brown University and is a sixth-year doctoral candidate in the Yale Immunobiology Department. In the lab, Arya studies how our immune system protects us against viral infections. Outside the lab, she is committed to making learning about mathematics and science enjoyable for people of all ages, perhaps best exemplified by the children's book she co-wrote with her father: The Mathematical Investigations of Dr. O and Arya. This talk was given at a TEDx event using the TED conference format but independently organized by a local community.
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