The CDC serves as the national focus for developing and applying disease prevention and control, environmental health, and health promotion and education activities designed to improve the health of the people of the United States. Health topics, news travel, health publications with links to Missouri and St. Charles County.

The National Cancer Institute coordinates the National Cancer Program, which conducts and supports research, training, health information dissemination, and other programs with respect to the cause, diagnosis, prevention, and treatment of cancer, rehabilitation from cancer, and the continuing care of cancer patients and the families of cancer patients.

The NIMH conducts research on mental disorders and the underlying basic science of brain and behavior;
supports research on these topics at universities and hospitals around the United States;
collects, analyzes, and disseminates information on the causes, occurrence, and treatment of mental illnesses;
supports the training of more than 1,000 scientists to carry out basic and clinical research; and
communicates information to scientists, the public, the news media, and primary care and mental health professionals about mental illnesses, the brain, mental health, and research in these areas.

OncoLink was founded in 1994 by Penn cancer specialists with a mission to help cancer patients, families, health care professionals and the general public get accurate cancer-related information at no charge. OncoLink is designed to make it easy for the general public to navigate through the pages to obtain the information that they want. Through OncoLink you can get comprehensive information about specific types of cancer, updates on cancer treatments and news about research advances. We update the information everyday and provide information at various levels, from introductory to in-depth.

PubMed Central is a digital archive of life sciences journal literature, developed and managed by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM). With PubMed Central, NLM is taking the lead in preserving and maintaining unrestricted access to the electronic literature, just as it has done for decades with the printed biomedical literature. PubMed Central aims to fill the role of a world class library in the digital age. It is not a journal publisher. NLM believes that giving all users free and unrestricted access to the material in PubMed Central is the best way to ensure the durability and utility of the archive as technology changes over time. Access to PMC is free and unrestricted.