Pain in the lower left back could indicate a problem with the muscles, joints, mid-back, or organs in the pelvic area. Common sources of pain include muscle injuries, kidney problems, and arthritis.

The most common cause of low back pain on the left side is a muscle strain. Other causes of lower left back pain include a kidney infection, herniated disc, and pregnancy. To treat lower left back ...

One-sided back and hip pain can occur on the left or right side ... repetitive movements damage muscles over time. Stressful, repetitive motions can cause the low-back muscles to become stiff ...

Your journey to getting shredded doesn't involve just situps and planks. Your midsection can power so much more.

A nationwide Chinese study found that older adults with sarcopenia, an age-related loss of muscle mass and strength, experience significantly higher rates of lower back pain compared to their peers ...