Movement is the answer, not bed rest
Low back pain is among the most democratic of human afflictions — four in five people will know it at some point, and New Zealand is no exception, bearing $4 billion in ACC costs over eleven years as testament to its quiet, pervasive weight. Yet for all its prevalence and economic consequence, most episodes resolve within six weeks, and the path through is less about dramatic intervention than about trusting the body's capacity to heal when kept in motion. Dr Bryan Betty's account of the condition is ultimately a reminder that the most common suffering is rarely the most mysterious, and that wisdom often lies in resisting the urge to do less.
- Four in five people worldwide will experience low back pain, making it not a medical outlier but a near-universal feature of human life.
- New Zealand's ACC has spent $4 billion on back injury claims over eleven years, exposing the enormous economic pressure this everyday condition places on the nation.
- Certain warning signs — leg weakness, loss of bladder control, or pain following a fall — demand urgent medical attention and separate the routine from the serious.
- The counterintuitive truth at the heart of treatment is that bed rest, the instinctive response, actively works against recovery — movement is the medicine.
- Most cases resolve within six weeks through pain relief, gentle stretching, and physiotherapy, with long-term prevention resting on exercise and weight management rather than clinical complexity.
Walk into almost any GP's surgery in New Zealand and low back pain will be somewhere on the day's roster. Dr Bryan Betty puts the scale plainly: four out of five people worldwide will experience it at some point in their lives. It is not a rare condition — it is nearly universal.
The burden extends well beyond personal discomfort. Low back pain is New Zealand's leading cause of workplace disability and time off work, and ACC has spent $4 billion managing related claims over the past eleven years. Yet the condition carries a counterintuitive truth: most episodes resolve on their own within about six weeks, without serious intervention.
The causes are often unremarkable — muscle strain from lifting or twisting, poor posture, prolonged sitting, age-related spinal degeneration, and even stress, which tightens muscles and amplifies pain signals. But not all back pain is equal. Leg weakness or numbness that worsens, loss of bladder control, groin numbness, severe pain after a fall, or pain accompanied by fever are red flags requiring prompt medical assessment.
For the majority of cases, the treatment approach runs counter to instinct. Bed rest is not the answer — movement is. Staying active, supported by paracetamol, anti-inflammatories, or muscle relaxants where appropriate, and guided by physiotherapy, gives the body its best chance to recover. Imaging is rarely necessary for a typical episode. The longer work is prevention: regular exercise and weight management, unglamorous habits that quietly protect the spine over a lifetime.
Walk into almost any GP's surgery in New Zealand and you'll find low back pain is one of the most routine complaints on the day's roster. Dr Bryan Betty, speaking on the topic, notes a striking statistic: four out of five people worldwide will experience low back pain at some point in their lives. It's not a rare condition. It's nearly universal.
The scale of the problem extends far beyond individual discomfort. Low back pain stands as the leading cause of disability and work absence in New Zealand. Over the past eleven years, the country's Accident Compensation Corporation has spent $4 billion managing claims related to back injuries—a figure that underscores how deeply this condition shapes the nation's health and economic landscape. Yet here's the counterintuitive part: most people who develop low back pain will recover without serious intervention. The typical episode resolves within about six weeks.
The causes are often mundane. Muscle or ligament strain from lifting, bending, twisting, overuse, or falls accounts for many cases. Poor posture, prolonged sitting, and lack of physical activity contribute significantly. As people age, the spine undergoes degenerative changes—arthritis of the lower back becomes more common. Stress and anxiety play a role too, tightening muscles and amplifying pain signals. The body's response to psychological pressure can manifest directly in the lower back.
But not all back pain is created equal. Certain warning signs demand immediate medical attention. Weakness or numbness in the leg that worsens over time warrants investigation. Severe pain following a fall should be evaluated. Loss of bladder control or numbness in the groin area are red flags that suggest something more serious is happening. Pain that remains constant, grows worse, or arrives alongside fever or elevated temperature requires a GP's assessment. When these symptoms appear, further investigations may be ordered.
For the majority of cases—those without these danger signs—the treatment approach is surprisingly straightforward, though it runs counter to what many people instinctively do. Bed rest is not the answer. Movement is. Staying active, moving as much as possible, helps the body recover more effectively than immobilization. Pain relief comes through paracetamol or anti-inflammatory medications like ibuprofen, when safe to use, or muscle relaxants to ease spasm. Gentle stretching and physiotherapy accelerate healing and restore function.
Long-term prevention shifts the focus to lifestyle. Regular exercise strengthens the muscles that support the spine. Weight loss reduces the load the back must carry. These aren't dramatic interventions—they're the unglamorous work of maintaining a body that will serve you for decades. Most people won't need imaging like X-rays to recover from a typical episode. The spine will heal itself, given time, movement, and modest support. The challenge isn't usually medical complexity. It's convincing people that doing less—resting in bed—is precisely the wrong move.
Citas Notables
Most cases don't need an X-ray and will resolve in a few weeks— Dr Bryan Betty
Keep moving, don't stay in bed, move as much as possible— Dr Bryan Betty
La Conversación del Hearth Otra perspectiva de la historia
Why does low back pain affect so many people if it's usually not serious?
Because it's not about severity—it's about the sheer mechanics of how we live. We sit, we bend, we lift. The back is under constant demand. Most people will strain it at some point, just like most people will catch a cold.
But if most cases resolve in six weeks, why does ACC spend billions on it?
Because those six weeks add up across millions of people. Someone off work for six weeks, then another person, then another. Multiply that by the entire working population over eleven years. The individual cases are manageable. The aggregate cost is enormous.
So the real problem isn't the pain itself—it's the time away from work?
That's part of it. But there's also the fear. People think back pain means something is broken. They think they need to rest completely. That fear keeps them immobilized, which actually makes recovery slower.
What's the hardest part of treating it, then?
Convincing people to move when every instinct tells them to stay still. The evidence is clear—movement helps. But it feels counterintuitive when you're in pain.
And the warning signs—how do people know when to actually worry?
Leg weakness, numbness, loss of bladder control—those are the ones that matter. They suggest something beyond a simple strain. Most people won't see those. Most will just have pain that gradually improves as they stay active.