Major European Study Finds Antiretroviral Therapy Reverses Accelerated Biological Ageing in HIV Patients by Four Years

New research from ESCMID Global 2026 shows antiretroviral therapy significantly reduces accelerated ageing in HIV patients.

By: AXL Media

Published: Apr 20, 2026, 8:14 AM EDT

Source: Information for this report was sourced from ESCMID Global

A Transformative Shift in HIV Long-Term Health Monitoring

A landmark study unveiled today at the ESCMID Global 2026 congress in Munich, Germany, has established that antiretroviral therapy (ART) can reduce the accelerated biological ageing process in people living with HIV by nearly four years. The research utilized a newly developed plasma proteomic ageing clock (PAC), a diagnostic tool designed to estimate physiological age based on patterns identified across hundreds of blood proteins. This discovery provides clinicians with a quantifiable measure of how effective treatment impacts the long-term health and cellular vitality of patients beyond simply suppressing viral loads.

Quantifying the Rapid Progression of Untreated Viral Infection

Before the initiation of treatment, the study found that individuals with detectable HIV in their blood experienced a median biological age acceleration of 10 years. The research team, drawing from the Swiss HIV Cohort Study, analyzed 294 longitudinal samples to track the trajectory of this ageing process. Dr. Barry Ryan, a lead author from EPFL Switzerland, noted that uncontrolled infection is consistently linked to faster ageing across multiple markers, including telomere shortening and epigenetic changes, emphasizing the severe physiological toll of untreated viraemia.

Significant Recovery Observed Following Treatment Initiation

The introduction of ART led to a statistically significant mean reduction of 3.7 years in proteomic age after a median treatment duration of only 1.55 years. Data indicates that as patients maintain suppressive therapy, their biological age continues to move closer to their chronological age. This suggests that the body undergoes a period of sustained biological recovery when the virus is properly managed. The findings reinforce the clinical consensus that starting ART promptly after a diagnosis is essential for preventing permanent physiological advancement.