The Science Behind Chiropractic Adjustments: What Happens During a Spinal Adjustment?

Dr Brad Pritchard • July 21, 2025

If you’re living with chronic pain, like neck tension that won’t quit or a low back that flares up every time you move, you’ve likely been told to “try chiropractic.” But before anyone lays a hand on your spine, you want answers. Real ones.


Keep reading to learn the science behind spinal adjustment, including what it does, how it works, and why so many people walk out of their appointment finally feeling like their body’s working with them instead of against them.

A man is examining a woman 's back on a table.

Why Does a Chiropractor “Crack” Your Back and Why Does It Feel So Good?

At its core, spinal adjustment is a hands-on technique where a chiropractor applies a controlled, precise force to a specific joint. That quick thrust realigns bones and sets off a cascade of effects throughout your nervous system, muscles, and brain. Some are local (where the adjustment happens) and others ripple outward.


What Happens Right at the Joint

When a vertebra is slightly misaligned or not moving correctly, it can irritate the surrounding nerves and soft tissues. An adjustment helps restore normal motion in the joint segment, unlocking stiffness, reducing inflammation, and relieving pressure on nearby structures. Clinical trialshave shown that this process is a measurable, physical reset at the spinal level.


Your Brain Is in on It Too 

What makes SM different from just cracking your own neck at home? The brain.


Spinal adjustment taps into the body’s pain regulation systems. When an adjustment happens, receptors in the joint send signals to the brain. That rush of input can override the pain messages already flooding in.


There’s also evidence it shifts activity in key brain regions that regulate muscle tone, balance, and mood. Chiropractic care meets physical, emotional, and neurological pain head-on.


Muscles Finally Let Go

Pain tightens everything. Over time, your muscles start to brace, even when there isn’t a threat.


Adjustments help reset this loop. Once the joint regains movement and the nervous system calms down, the surrounding muscles follow suit. The guarding eases, and flexibility returns.


You don’t have to “stretch it out” for months, hoping for relief. Your body starts to cooperate again.


Clinical Evidence of Chiropractic Care

Recent clinical reviews have found something worth paying attention to: people experienced up to 50% less back and neck pain after spinal adjustment. These statistics are supported by peer-reviewed medical studies published in reputable databases.


Even in the most rigorous tests, where some participants received placebo treatments (no actual adjustment), those who underwent spinal adjustment consistently
reported better results, not just for a few hours, but for weeks afterward.


These changes reflected
real improvements in how the body moved, felt, and functioned. Science is catching up to what patients have known for years: when the spine moves more efficiently, everything works more effectively.


Experience the Results of Science-Driven Healing

There’s no miracle fix, but that doesn’t mean you’re stuck where you are. Chiropractic care restores communication between your spine, brain, and muscles, helping you feel good again.


Still skeptical but secretly hopeful? Good, that’s the sweet spot. The trusted chiropractors at Oak Bay Family Chiropractic will show you what happens when pain stops calling the shots.


Book your first visit today to get your body back on your side.

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