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Season 9Apr 18, 2024

The promise of a miracle cure

Doris Tyler was losing her sight, so she tried a new stem cell treatment that changed her life — but not as she had hoped.

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Don, left, and Doris Tylor in their home in Banner Elk, North Carolina.
Don, left, and Doris Tylor in their home in Banner Elk, North Carolina.
Reema Khrais

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Doris Tyler has been full of energy her whole life. When she was young, she yelled so loud in the stands at baseball games that her family joked they could hear her all the way from home. Later, she became a music teacher at an elementary school, where students adored her. Even after she retired, Doris was always busy with something, whether it was helping out her church or devising creative desserts for her grandchildren.

But then she started to lose her sight, and with it, her sense of self and love of life. She couldn’t drive anymore, and she struggled to read the fine print on her beloved sheet music. Even cooking became a struggle without her husband Don’s help. 

Doris’ blurry vision was diagnosed as macular degeneration, and it was only getting worse. She tried the treatment her doctor recommended to stabilize the condition, but after a while that stopped working too. 

And that’s when she and Don heard about a hopeful new field of medicine: stem cells, which promised to heal a variety of conditions by using the body’s own cells. The stem cell treatment for macular degeneration was expensive — $8,000, more than Doris and Don had in their savings account — but their community rallied around them to help pay for it. Doris was thrilled to have found a potential cure.

“It would either improve my sight or it would stay the same,” Doris said she was told, “which when you think you’re going blind, that sounds pretty good, you know?” 

The treatment ended up changing Doris’ life, but not in the way she’d anticipated. Instead of relief, it brought more heartache. 

This week, we talk with biologist Paul Knoepfler about the largely unregulated stem cell industry and share Doris’ story of betrayal, retribution and unconditional love. 

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The promise of a miracle cure