Understanding Lower Back Pain — Causes, Myths, and Realities

person with lower back pain at the doctors
|

If you’ve ever felt that familiar ache in your lower back after sitting too long or lifting something heavy, you’re not alone. Nearly 8 out of 10 adults experience lower back pain at some point in their lives — making it one of the most common reasons people miss work or visit a doctor.

But here’s the kicker: most lower back pain isn’t caused by anything dramatic. In fact, many cases are linked to daily habits — posture, movement patterns, or muscle weakness — that can be corrected with awareness and the right approach.

In this post, we’ll break down what’s really going on when your back hurts, debunk a few myths, and explain why physical therapy is often the smartest first step toward lasting relief.

The Anatomy of Your Lower Back
Your lower back (or lumbar spine) is a remarkable piece of engineering. It supports the weight of your entire upper body while allowing you to bend, twist, and move freely.

  • Vertebrae: 5 stacked bones (L1–L5) forming the spine’s lower section.
  • Discs: Gel-like cushions between each vertebra that absorb shock and allow movement.
  • Muscles and Ligaments: These hold the spine together and control motion.
  • Nerves: The spinal cord passes through the center, branching into nerves that control your legs and core.

When any of these structures are irritated, overworked, or injured, pain signals are sent to your brain. That’s why pinpointing the exact cause can be tricky — what feels like a “disc problem” might actually stem from weak glutes, tight hip flexors, or even stress.

Common Causes of Lower Back Pain
Let’s look at the main culprits:

  • Muscle or Ligament Strain: One wrong twist, an awkward lift, or even sneezing too hard can strain soft tissues in your back. This is the most common cause of sudden pain and stiffness.
     
  • Poor Posture: Slouching at a desk, driving long hours, or lounging on the couch with a rounded spine can stress your lumbar discs and muscles over time.
     
  • Disc Degeneration or Herniation: As we age, spinal discs lose hydration and flexibility. Sometimes a disc bulges or ruptures, pressing on nerves and causing pain, tingling, or numbness down the leg — known as sciatica.
  • Arthritis and Spinal Stenosis: Osteoarthritis can narrow the spinal canal, squeezing nerves and creating chronic stiffness or pain.
     
  • Lifestyle Factors: Inactivity, obesity, or lack of core strength increase strain on your back muscles and joints. Even stress can cause tension-related back pain.

Myths About Lower Back Pain (and the Truth Behind Them)
There’s a lot of misinformation about back pain floating around — some of it downright harmful. Let’s set the record straight.

Myth #1: Bed Rest Is the Best Cure
Truth:
Extended bed rest weakens your muscles and slows recovery. Gentle movement actually helps your body heal faster.

Myth #2: Pain Always Means Injury
Truth:
Pain doesn’t always equal damage. Often, it’s your body’s way of signaling tension, fatigue, or inflammation — not necessarily something “broken.”

Myth #3: You Need an MRI Right Away
Truth:
In most cases, imaging isn’t needed immediately. Unless you have red flags (numbness, weakness, fever, or trauma), your physical therapist can assess and treat you safely without it.

Myth #4: Back Pain Is Inevitable as You Age
Truth:
Aging alone doesn’t cause pain. It’s the combination of poor movement habits, weakness, and inactivity that leads to trouble — all of which can be improved through physical therapy.

Why Physical Therapy Is the Best First Step
When your back hurts, your instinct might be to rest or reach for medication. But neither of those fixes the root cause. Physical therapists are experts in movement — they assess how your body moves, identify the underlying problem, and design a custom plan to help you recover and prevent future pain.

A Typical PT Evaluation Might Include:

  • Posture and movement analysis
  • Strength and flexibility testing
  • Core and hip stability checks
  • Education on safe movement patterns

From there, your PT will guide you through exercises, stretches, and posture adjustments tailored to your lifestyle — whether you sit at a desk, lift weights, or chase toddlers all day.

How Early Intervention Prevents Chronic Pain
The longer you wait to address back pain, the greater the risk it becomes chronic. Studies show that patients who start physical therapy early experience faster recovery, lower healthcare costs, and less chance of recurrence.

Think of it this way: the sooner you move right, the sooner your back remembers what “normal” feels like.


If your pain lasts more than a week, radiates down your leg, or interferes with sleep or daily activity, don’t tough it out. See your physical therapist at Lifestyle Physical Therapy. We can determine whether your pain is mechanical (movement-related) or requires further medical investigation.

If back pain is slowing you down, don’t wait for it to “go away.” Our licensed physical therapists at Lifestyle Physical Therapy can assess your movement, relieve your pain, and teach you how to protect your back for life.

Book a consultation today and start moving comfortably again!