| Summary: | How might rare medical conditions be a force for good? This probing documentary reveals the extraordinary people who are helping international scientists make medical breakthroughs. A woman who can smell Parkinson's disease helps doctors find a new way to diagnose this debilitating condition. A pioneering stem cell trial provides hope for those with multiple sclerosis. And a patient's inability to sense pain inspires a new generation of pain relief. The World's Most Extraordinary People meets the scientists and patients at the heart of these stories - and takes us right to the edge of scientific understanding. In this episode, Weston uncovers the cases of an engineer who fixed his own heart, a toddler whose bones were repaired before he was even born, and a girl whose immune system attacked her own brain. We meet a man who can taste words and find out how his condition is helping develop new ways to enable blind people to navigate and even recognize colors. And we encounter a man who was immobilized by MS but can now cycle and scuba-dive thanks to a pioneering new treatment that has reversed his disease.
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