David Suzuki simulates the barriers facing an Alzheimer's patient.

Untangling Alzheimer's is a dramatic and inspiring medical investigation driven by David Suzuki's journey to understand the science of Alzheimer's and the surprising new insights into its cause.

David has a very personal interest in the disease because his mother, aunt and two uncles died of it. We join David on an intimate journey as he explores the newest breakthroughs in this devastating disease as well as his own chances of contracting the cruel condition.

Alzheimer's today is the only leading cause of death that cannot be cured, prevented or even slowed. Worse, it's the only leading cause of death that is on the rise – and not simply because baby-boomers are getting older. Studies show that the increase is absolute across all age groups, and death rates continue to climb. With a new case developing every 69 seconds, scientists now speak of the Alzheimer's epidemic.

Listen to an interview with David Suzuki on Radio Q

Despite decades of work and millions of dollars invested in research, to this day no one knows what exactly causes this most deadly dementia. But surprising new theories about the roots of Alzheimer's may now be untangling the mystery.

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