U.S. Department of Health and Human ServicesThe Department of Health and Human Services (HHS) is the United States government’s principal agency for protecting the health of all Americans and providing essential human services, especially for those who are least able to help themselves. The Department of Health and Human Services is the principal agency for protecting the health of all Americans. It is comprised of the Office of the Secretary and 11 operating divisions. The agencies perform a wide variety of tasks and services, including research, public health, food and drug safety, grants and other funding, health insurance, and many others.