Lower back pain affects up to 80% of people at some point in their lives, making it one of the leading causes of disability worldwide. Understanding the causes of lower back pain can help you take early action and prevent symptoms from worsening.
Muscle Strain and Poor Posture
Muscle and ligament strain is the most common cause of acute lower back pain. This often occurs due to lifting heavy objects incorrectly, sudden movements, or overuse during physical activity.
Poor posture—especially prolonged sitting with inadequate back support—places continuous strain on the lumbar spine. Over time, this can lead to muscle fatigue, stiffness, and chronic discomfort.
Herniated Discs
Spinal discs act as shock absorbers between the vertebrae. When a disc becomes damaged or weakened, its inner material can protrude outward, creating a herniated disc.
This can compress nearby nerves, causing pain in the lower back that may radiate into the buttocks or legs. Disc-related pain is often aggravated by bending, coughing, or sitting.
Spinal Stenosis
Spinal stenosis involves the narrowing of the spinal canal, typically due to age-related degeneration. As the space for nerves decreases, patients may experience pain, numbness, or weakness in the lower back and legs, particularly when walking or standing.
Lifestyle and Occupational Risk Factors
Several everyday factors increase your likelihood of developing lower back pain:
- Sedentary behaviour and lack of exercise
- Excess body weight placing strain on the spine
- Jobs involving heavy lifting or repetitive movement
- Long hours of driving or desk work
- Smoking, which impairs circulation to spinal tissues
When to Seek Specialist Advice
If your pain persists beyond a few weeks, worsens, or is accompanied by neurological symptoms (such as numbness or weakness), it’s important to seek professional assessment.
