After the birth of his first child, Dr. Peter Attia became his own first patient in a new speciality: longevity medicine.

Today, the Stanford-trained doctor is prescribing a radical change in how Americans think about their own health care. His patient-driven, prevention-focused "Medicine 3.0" concept is designed to help people thrive in the last decade of their lives, a period typically plagued by sickness and immobility.

"The marginal decade's not going anywhere. We will all have a final decade of life," Attia, 52, told 60 Minutes contributing correspondent Norah O'Donnell. "My goal is to make the marginal decade as enjoyable as possible."

Why training for the marginal decade is important

More than 90% of American senior citizens suffer from at least one chronic disease, such as hear

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