Dr. Nir Barzilai was just a young child when he realized that he would one day age—and that it might not be a very pleasant experience when he did. Observing his grandfather, who looked so old and barely moved but had somehow achieved so much in his life, Barzilai wondered how all this had come to be. And thus began a lifelong fascination with the mysterious condition of aging that would ultimately lead him on a quest for answers.

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