A study highlights the complex interplay between HIV, immune responses, and neurocognitive outcomes in adolescents.Researchers found that even with effective antiretroviral therapy (ART), residual HIV-related immune activity may persist in the central nervous system (CNS), potentially contributing to neuroinflammation and affecting brain development or cognitive function.The study emphasizes that blood-based viral load measurements alone may not capture all HIV-related biology, particularly within the CNS.

Key findings include ongoing immune activation linked to low-level viral activity in the cerebrospinal fluid (CSF) and potential links to memory, attention, and learning deficits.While current ART remains effective for viral suppression, the study underscores the need for therapies targeting hidden HIV reservoirs in the brain.

Longitudinal research is recommended to determine whether these immune signals predict future neurological changes or simply reflect a biological footprint of HIV.

The findings also stress that cure strategies must account for the CNS as a distinct immunological compartment, given the blood-brain barrier's role in limiting drug penetration and the persistence of long-lived cells harboring HIV.

This research does not question the success of ART but calls for more comprehensive monitoring to ensure holistic health outcomes for people living with HIV.