Dr. Thomas Perls is one of the world's top experts on centenarians -- people over 100.

After discovering how healthy his older patients were at the Boston Medical Center, he helped launch the New England Centenarian Study.

He talked to Growing Bolder about his exciting research, including the discovery of longevity genes which could be used to develop age-slowing drugs.

To see if you have what it takes to live to 100, click here to use Dr. Perls' life expectancy calculator.

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