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.
Generally speaking, the time it takes to go from HIV infection to AIDS is around 5-10 years if no medical intervention is made. Differences in time can be due to any number of factors, including: the genetic strain of HIV a person has been infected with (some of which may be more or less virulent than others)