Our spines contain many discs that sit between the vertebrate (bones) of our spine. Younger individuals tend to have discs that are flexible and elastic. As we age, these discs become increasingly rigid. A less elastic disc is more likely to be injured than a flexible one. A herniated disc, also known as a slipped disc, occurs when one of these spinal discs ruptures and moves out of place. This can pinch the nerves in your spine or even your spinal column.
The older you get, the more at risk you are of a herniated disc. However, herniated disc injuries can also happen during injury or strain to your back. Middle aged and older men are at higher risk for herniated disc. Other conditions may also be a contributing factor, such as being born with a thinner or thicker spinal canal, or spinal stenosis, a condition that causes the space around your spinal cord to shrink.