This document discusses the need to talk about how health data is used. It notes that people currently have little understanding of how their data is used by various organizations like the NHS, academics, and commercial groups. The document outlines resources and strategies to help improve public understanding of issues like how data is kept safe, whether it is identifiable, what choices people have, and the benefits of data use. It emphasizes the importance of language and transparency to build public trust and confidence in the important uses of health data for individual care, research, and improving health services.