Regarding the question of life expectancy after taking medication for AIDS, generally speaking, taking medication after being infected with AIDS does not affect life expectancy. For example, a person can live to be 80 years old, but if he is infected with AIDS and takes antiretroviral drugs at the same time, he can also live to be 80 years old, and his life expectancy will not be affected by the antiretroviral drugs, and he will live to be in his 70s or 60s. Therefore, AIDS patients who take antiretroviral drugs normally do not have to worry about their life expectancy. However, they must take them regularly and on time, and after HIV infection, they must go to the local CDC for drug registration and systematic antiretroviral treatment. For the prevention of HIV infection, the main thing is not to have close and intimate contact with strangers.