HIV can be transmitted through bodily fluids and causes AIDS by attacking and destroying CD4 cells. This leaves the immune system vulnerable to infections and illnesses. While not all with HIV develop AIDS, earlier treatment leads to better outcomes. Stigma from HIV/AIDS causes social isolation, poverty, and mental health issues. Proper treatment with antiretroviral drugs can suppress the virus and prevent development of AIDS, but delayed treatment allows more harm to the immune system and higher transmission risk.