Disease Topics

• Sickness

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Disease, Disease

The micro-organisms that cause these diseases are known as pathogens and include varieties of bacteria, viruses, protozoa and fungi. Infectious diseases can be transmitted by as, by hand to mouth contact with infectious material on surfaces, by bites of insects or other carriers of the disease, and from contaminated water or food (often via faecal contamination), etc. In addition, there are sexually transmitted diseases. In some cases, micro-organisms that are not readily spread from person to person play a role, while other diseases can be prevented or ameliorated with appropriate nutrition or other lifestyle changes. Some diseases such as cancer, heart disease and mental disorders are , in most cases, not considered to be caused by infection (see Non infectious disease), although there are important exceptions. Many diseases (including some cancers, heart disease and mental disorders) have a partially or completely genetic basis (see Genetic disorder) and may thus be transmitted from one generation to another.

Conditions such as attention-deficit hyperactivity disorder and obesity are considered to be diseases by developed countries, but which have been regarded differently in other cultures.

As a comparison, consider pregnancy, which is not usually interpreted as a disease or sickness by the individual. On the other hand, it is considered by the medical community as a condition requiring medical care.

Fear of disease can still be a widespread social phenomenon, though not all diseases evoke extreme social stigma.

Source: Wikipedia > Disease