Back pain is a common problem that affects millions of people worldwide. Research has found that a medium-firm mattress can provide the necessary support for people with back pain, helping to alleviate discomfort and improve overall spinal health. A study published in the Journal of Orthopaedic Research found that a medium-firm mattress was able to reduce back pain by 30% compared to a soft mattress. This is because a medium-firm mattress provides the right amount of support for the spine, reducing pressure on the muscles and joints and promoting proper alignment.