SciLine’s next media briefing will cover: what is known about how gender identity develops, including the role of external factors such as family, school, and community environments; what is involved in the process of medical transition, including the use of puberty blockers and hormone treatments; and research findings on how the outward, social transition to a different gender—and the age at which that transition occurs—can impact a person’s mental health. Three experts will brief reporters and then take questions on the record.