There are many competing theories about what causes Alzheimer's disease. For more than 30 years, Ruth Itzhaki has been accumulating evidence that viruses are involved in its development in the brain. We investigate this evidence in the third and final episode of Uncharted Brain: Decoding Dementia, hosted by Paul Keaveny and Gemma Ware from The Conversation.

Featuring interviews with Ruth Itzhaki, professor emeritus of molecular neurobiology at the University of Manchester in the UK, Dana Cairns, a postdoctoral research fellow at Tufts University in the US and Davangere P. Devanand, director of geriatric psychiatry and professor of psychiatry and neurology, Columbia University Medical Center in the US.

Uncharted Brain is produced by Tiffany Cassidy with sound design by Eloise Stevens. The executive producer is Gemma Ware. Read full credits here.

Further reading:

My work investigating the links between viruses and Alzheimer’s disease was dismissed for years – but now the evidence is building