Early HIV Treatment Protects Brain Health for Millions

Nearly two million South Africans over 50 are living with HIV today, and scientists have discovered something crucial about protecting their long-term brain health.

Research from the University of Cape Town reveals that HIV can enter the brain within just two weeks of infection. The virus travels through infected white blood cells, triggering inflammation that can damage brain tissue over time.

The good news? Starting antiretroviral therapy immediately stops this damage in its tracks. Professor John Joska, who directs UCT's HIV Mental Health Research Unit, explains that while the treatment can't reverse existing damage, it prevents any further harm from occurring.

"Today, people with HIV are living near normal lifespans," says Joska. The focus has shifted from survival to ensuring those years are lived with full cognitive health.

Modern HIV medications are making an even bigger difference. In 2019, South Africa switched from efavirenz to a newer drug called dolutegravir, which has proven remarkably protective for brain health.

Research led by Associate Professor Sam Nightingale found that people who switched to dolutegravir looked neurologically similar to people without HIV after just eight months. The older medication caused nightmares, anxiety, and even psychosis in some patients during the first two months of treatment.

The Bright Side

This research matters beyond South Africa's borders. Around 20% of people living with HIV across sub-Saharan Africa are now over 50, representing millions who stand to benefit from early treatment protocols.

Scientists are also rethinking how they diagnose cognitive issues in people with HIV. Traditional testing methods often overdiagnosed impairment by not accounting for factors like education level and socioeconomic background.

The new approach looks at real-life symptoms alongside medical evidence, reducing unnecessary stigma. This shift recently helped overturn a ban that prevented people with HIV from becoming airline pilots in the United Kingdom.

The message from researchers is clear and hopeful: immediate treatment after HIV diagnosis protects the brain, and modern medications work even better than their predecessors. For the growing population of older adults living with HIV, this means aging with cognitive health intact and living full, productive lives without the double burden of stigma.