Most people know that stress doesn’t feel good. What’s less commonly understood is what it’s actually doing inside the body — and why prolonged stress is one of the most significant drivers of physical health decline.
Acute Stress vs Chronic Stress
Not all stress is harmful. Short-term, acute stress — the kind that helps you meet a deadline or react quickly in an emergency — actually has some beneficial effects on the immune system. The body mobilises its resources, performs well under pressure, and recovers.
The problem is chronic stress: the low-level, ongoing kind that never fully switches off. Work pressure that doesn’t let up. Financial worry that runs in the background. The relentlessness of a life that never quite slows down. This is where the body starts to struggle.
What Prolonged Stress Does to Immunity
When the body is under sustained stress, cortisol — the primary stress hormone — is released continuously rather than in short bursts. Research published in Molecular Biology Reports found that long-term exposure to elevated cortisol significantly reduces circulating lymphocytes (the immune cells responsible for fighting infection), leading to a loss of immune responsiveness. [1]
Over time, chronic stress also causes the body to become resistant to cortisol’s normal anti-inflammatory signalling — meaning rather than suppressing inflammation, dysregulated cortisol levels begin to promote it. This chronic, low-grade inflammation has been linked to a wide range of conditions including cardiovascular disease, autoimmune disorders, and increased susceptibility to infection. [2]
What This Looks Like Physically
In a clinical setting, the effects of chronic stress show up in very tangible ways:
• Muscles that stay chronically tense and don’t release fully, even with treatment
• Slower recovery from injury or illness
• Pain that’s disproportionate to the physical cause, or that flares during high-stress periods
• Persistent fatigue that sleep doesn’t fully fix
• Frequent colds and infections as immune function dips
What Helps
Managing chronic stress isn’t just good for mental health — it’s a physical health intervention. Regular movement, quality sleep, time spent in genuine rest, and supportive bodywork all help regulate the nervous system and reduce the physiological load of sustained stress.
Remedial massage, in particular, works directly on the nervous system — helping to shift the body from sympathetic activation (the stress state) into parasympathetic recovery, where healing and immune regulation happen most effectively.
The Takeaway
The body doesn’t separate stress from physical health — they’re the same system. Taking chronic stress seriously, and doing something about it, is one of the most meaningful things you can do for your long-term physical wellbeing.
If stress has been showing up in your body, that’s worth addressing. Book a session here.
References
[1] PMC — The multifaceted impact of stress on immune function (2025)
[2] Springer — The Impact of Everyday Stressors on the Immune System and Health
