Disease is an abnormal functionality of an organism’s body and mind. Most commonly when we use word disease we refer to diseases associated to body but there are psychic portion of this also. The sickness carry with them various symptoms and criterions. Sometimes the symptoms are itself diseases. There are innumerable illness present in the world but most common are influenza, cancer, hepatitis, heart diseases, typhoid, HIV AIDS, Malaria, chicken pox, measles , pneumonia, genetic, allergies disorders high blood pressure, diabetes and stomach disorders.
Some diseases are transferable and some restrict themselves to a specific person. Most of the them are transferred from one human being to another via blood, air, body fluids and use of infected materials. Such diseases include hepatitis, HIV Aids, skin related problems and some virus such as Swine flue. Such infections can be caused from various sources like from biting of insects like mosquitoes cause malaria and dengue virus. Skin diseases like chicken pox can be transferred from one individual to another via touching and eating together with the infected person. High blood pressure is considered to be a disease of old age. However this disease can also affect the body due to unhealthy eating habits and depression. Another disease which is associated to unhealthy eating habits is diarrhea and related stomach disorders. Allergies of various forms are also common and almost every individual even the animals suffers some kind of allergy. Allergies are curable if diagnosed properly.
Though we can associate diseases with various sources and reasons but the fact is that nobody knows when any specific disease can harm or attack a person. Some diseases like cancer and heart diseases can attack a person without showing any significant symptoms. However the incurable disease like HIV Aids is caused if human beings ignore the necessary precaution before indulging in sex or taking drugs. Some diseases can be cured forever and some are chronic which are hard to diagnose. Such diseases include cancers of various types, heart diseases, diabetes and Aids. Aids can be controlled by taking necessary precautions whereas others can be countered by timely diagnosis. To refrain from any disease it is indispensable to visit a doctor for regular and thorough check up of body. Precautions are necessary for avoiding most common diseases which become life threatening later