Sometimes our bodies will encounter changes through life that will bring heightened risk of back pain. Perhaps the most common is aging. As we get older, our backs are more prone to strain and injury. Some cancers and arthritis can cause stiffness and swelling in the back. During pregnancy, the weight that is gained in the process cause many women to experience strain to the back. If you are prone to feelings of high stress, this can cause considerable tension in your back, and it has been observed that depression and anxiety can agitate back pain even further. Sometimes conditions start from birth, like scoliosis, which unnaturally affects the curvature of the spine.