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How do spinal disks change with age?

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In children, spinal disks are gel- or fluid-filled sacs. They begin to solidify as you age. By early adulthood, the disk's blood supply has stopped, the soft inner material has begun to harden, and the disk is less elastic. By middle age, the disks are tough and quite unyielding -- they feel like a piece of hard rubber. These changes make the outer protective lining weaker, so the disks are more prone to injury.

SOURCES: 

Medtronic Sofamor Danek, Inc. 

The Mayo Clinic.

Reviewed by David Zelman on April 21, 2017

SOURCES: 

Medtronic Sofamor Danek, Inc. 

The Mayo Clinic.

Reviewed by David Zelman on April 21, 2017

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What is a herniated disk?

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