Estherina Trachtenberg, is a postdoctoral researcher at the University of Cambridge and science communicator. She writes about research at the intersection of social connection, prosocial behaviour, and health, with a focus on social psychoneuroimmunology and related biological mechanisms. Her research examines how social connection and prosocial behaviour relate to brain and immune processes across the lifespan. She has extensive experience in science communication, writing, and lecturing, and is actively involved in public engagement through initiatives such as Big Little Science and Pint of Science. She began her academic journey as a nurse and volunteered in nursing roles for many years at a free clinic and in rural areas in Nepal. Estherina is passionate about making research accessible, rigorous, and useful for diverse audiences. Bluesky: https://bsky.app/profile/estherina.bsky.social