Homelessness is like other chronic medical problems: in need of a cure. That realization came to Margot Kushel as she was working as a resident physician at San Francisco General Hospital in the 1990s, and it has shaped her work ever since. More than a third of the patients in the inpatient wards were homeless, seeking medical care for issues that were often exacerbated by life on the streets. The patients rotating in and out of the hospital faced complex health problems. They had just one thing on their side: youth.