The autonomic nervous system (ANS or visceral nervous system) is the part of the peripheral nervous system that acts as a control system functioning largely below the level of consciousness, and controls visceral functions.
ART significantly extends the likelihood of surviving for several decades, according to the U.S. Department of Health & Human Services. If untreated, HIV-positive persons typically live in clinical latency for around 10 years. Individuals on ART are not likely to have their HIV infection reach the AIDS stage. If the viral infection progresses to that stage, survival is estimated at around three years.
More info: http://www.cdc.gov/hiv/resources/brochur... The time varies depending on the individual, though the median age is estimated to be around 10 years. Anything from your genetic makeup, to your age, stress levels, and nutrition can affect how long it takes for HIV to develop into AIDS.