HIV or Human Immunodeficiency Virus is one of the most common and most discussed life threatening conditions worldwide. This virus attacks our natural defense system known as the immune system and makes it weaken to fight against infections. Our immune system helps us to fight against disease and infections and when Human Immunodeficiency Virus (HIV) enter our body it slowly damages our immune system and a person becomes more prone to several disease & infections. If HIV is left untreated for a long time it can lead to AIDS (Acquired Immunodeficiency Syndrome) that is a severe stage of infection where immune system become very weak.