A disease that is inherited through family-related factors is considered hereditary. This means that the disease is caused by genetic mutations or variations that are passed down from parents to their offspring. Examples of hereditary diseases include cystic fibrosis, sickle cell anemia, and Huntington's disease. Endemic refers to a disease that is consistently present in a particular geographic region or population. Infectious diseases are caused by pathogens such as bacteria, viruses, or parasites and can be transmitted from person to person.