When your back hurts, the first question is usually what did I do? The honest answer about back pain causes is that it is rarely one single thing, and often not what you would expect. Understanding the real causes, and the common myths, helps you worry less and recover better.
This is Part 2 of our lower back pain series. Here we look at the most common back pain causes, why poor posture is blamed more than it deserves, how everyday muscle strain and overload play a part, and the lifestyle risk factors that make back pain more likely.
What Causes Back Pain? The Honest Answer
Most lower back pain is non-specific, which means there is no single, identifiable structure to blame. Instead of one clear injury, back pain usually comes from a mix of factors: how much you move, how you load your body, your sleep, your stress levels and more. Sometimes it flares after an obvious event, and sometimes it builds gradually for no clear reason at all. That can feel unsatisfying, but it is actually good news, because it means there is a lot you can influence.
Common Back Pain Causes
While every back is different, some causes come up again and again. Everyday overload, such as lifting something awkwardly or doing far more than usual, is common. So is the opposite: too little movement, which leaves the back stiff and deconditioned. Occasionally a specific structure like a disc is involved, and if pain travels down the leg it may point to nerve irritation such as sciatica, but even then the pain is usually manageable. The point is that most causes are everyday and reversible, not signs of serious damage.
Is Poor Posture Really to Blame?
Poor posture gets blamed for almost everything, but the evidence does not support it as a major cause. There is no single correct posture, and research shows that how you sit or stand has surprisingly little to do with whether your back hurts. What matters more is staying in any one position too long. So while poor posture is an easy scapegoat, the fear of poor posture often does more harm than the posture itself. We cover this in detail in our dedicated posture article.
Muscle Strain and Everyday Overload
A common and genuine cause is simple muscle strain. When you load the muscles and tissues of the back beyond what they are used to, whether lifting, twisting or a sudden spike in activity, a muscle strain or irritation can follow. The reassuring part is that a muscle strain is rarely serious and tends to settle with time and gentle movement. Managing your load, rather than avoiding activity altogether, is the key to preventing the next one. If you want the detail, see our guide on whether to stretch a muscle strain.
Lifestyle and Risk Factors
Beyond any single event, a range of risk factors make back pain more likely. Low physical activity, long periods of sitting, being overweight, poor sleep and high stress all feature, as does a sudden jump in activity after a quiet spell. These risk factors often stack up together, quietly lowering your back’s tolerance over time. The good part is that they are things you can usually change, and addressing even one or two of these risk factors often makes a real difference to how your back feels.
The Real Back Pain Causes vs the Myths
It helps to separate the real back pain causes from the myths. Myths include the idea that back pain always means something is out of place, that a scan will reveal the exact cause, or that poor posture is wrecking your spine. In reality, most are everyday and multifactorial, scans often show harmless changes that do not match the pain, and your back is far more robust than it feels. Knowing this changes how you respond, usually for the better.
Common Questions About Back Pain Causes
What is the most common cause of back pain?
For most people, there is no single cause. Non-specific back pain from everyday load, inactivity and lifestyle factors is far more common than any specific injury.
Does poor posture cause back pain?
Not as much as people think. Poor posture is widely blamed, but the evidence links it only weakly to back pain. Staying in one position too long matters more than the position itself.
What are the main risk factors for back pain?
Common risk factors include low activity levels, prolonged sitting, poor sleep, high stress, carrying extra weight, and sudden increases in activity. Most of these risk factors are things you can improve.
How BeFit Can Help With Back Pain
At BeFit Training Physiotherapy, we help you find the factors actually driving your back pain, rather than blaming the wrong thing. Our physiotherapy team assesses your movement, history and lifestyle, then targets the causes that matter for you, and evidence-based strength and conditioning builds a more resilient back. Initial consultations run for 45 minutes, one-on-one.
Our team at Edgecliff and Coogee would be glad to help. No referral is required, and HICAPS is available on-site for immediate health fund claiming.
Book an appointment at BeFit Training Physiotherapy — no referral needed.
Edgecliff: (02) 9327 7749 | Coogee: (02) 7205 2805 | befittrainingphysio.com/book-now
Related Services at BeFit
Learn more about how our team can help:
Lower Back Pain Physiotherapy
Strength & Conditioning
Sports Physiotherapy
Further Reading
Lower Back Pain Explained: What You Need to Know (Part 1)
How to Know Which Lower Back Pain Treatment Works (Part 3)
How to Ease Lower Back Pain With the Right Exercises (Part 4)
How to Know if Bad Posture Is Causing Your Back Pain
How to Know if You Should Stretch a Muscle Strain
References
Hartvigsen J, et al. What low back pain is and why we need to pay attention. Lancet. 2018.
Maher C, Underwood M, Buchbinder R. Non-specific low back pain. Lancet. 2017.
Parreira P, et al. Risk factors for low back pain and sciatica: an umbrella review. Spine J. 2018.
Australian Physiotherapy Association. Clinical guidelines. physiotherapy.asn.au.
