A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs.

Diseases and Conditions information from the Centers for Disease Control and Prevention.

What is Alzheimer's disease? What happens to the brain in Alzheimer's disease? How many Americans have Alzheimer's disease? How long can a person live with Alzheimer ...

The starting place for exploring information on heart disease and cardiology.

Thyroid Disease information and support, featuring conventional and alternative news and information on hypothyroidism, hyperthyroidism, Hashimoto's, Graves' disease ...

Alzheimer's Disease. Esther Heerema is a licensed social worker who has worked with hundreds of individuals with Alzheimer's disease and other dementias.

A plague? Nuclear fallout? It's heart disease, which includes diseases of the heart and circulatory system. The No. 1 killer stalking the world ...

Different types of heart disease that affect the heart and steps that women can take to reduce the risk factors for heart disease.

Index of comprehensive articles on medical diseases and conditions. Covers all aspects of medicine produced by doctors.

Free, comprehensive guides on hundreds of diseases and conditions from Mayo Clinic experts.