An old mattress or mattress that's unfit for your body type and sleep position can cause back pain or exacerbate an existing issue. For example:
- An Old, Unsupportive, or Sagging Mattress– If your mattress is old or starting to sag, it can cause uneven areas of support for the spine. When your mattress sags in the middle, the lower part of your spine can be pulled out of alignment by dipping too far into the mattress.
- Wrong Firmness for Your Body and Sleep Position– Sleeping on a mattress that’s too soft or too firm for your body weight and sleeping preference can put strain on the lower back by pulling or pushing your spine out of its neutral alignment.
- Lack of Pressure Relief at the Hips– For side sleepers especially, pressure building up at the hips can tilt the pelvis and pull your lower back out of alignment. Without enough cushioning at the hips, your spine may feel the strain.