Slide show: Causes of back pain
Illustration of spinal compression fractures
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As you age, the amount of calcium in your bones decreases. This lowers the density or mass of your bones, making them porous and brittle — a condition known as osteoporosis.

If you have osteoporosis, daily lifting and other routine activities can cause compression fractures — cracks, usually on the forward-facing sides of one or more vertebrae. Compression fractures often lead to back pain.

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