Yolo Healthy Aging Alliance (YHAA) was born out of a June 2010 countywide, community-based summit sponsored by the Yolo Commission on Aging and Adult Services and the In-Home Supportive Services (IHSS) Advisory Committee. Yolo Healthy Aging Alliance (YHAA) was created to promote the well-being of older adults through education, collaboration, and advocacy , and to serve as The Unified Voice for Older Adults in Yolo County.