Non-infectious diseases (also called Non-communicable diseases [NCDs]) are those diseases that are not caused by a pathogen and cannot be shared from one person to another. In contrast, transmissible diseases caused by pathogenic organisms are infectious diseases. There are many kinds of non-infectious diseases. Some examples of are cancer, asthma, and heart diseases.Non-infectious diseases may be caused by either the environment, nutritional deficiencies, lifestyle choices, or genetic inheritances. Unlike infectious diseases, non-infectious diseases are not communicable or contagious, although some kinds can be passed down genetically to the children of a carrier.

Extracted from www.wikipedia.org.