When Pain Carries a History: Why Recovery and Rehabilitation Need a Wider Lens

My own work sits across post-injury rehabilitation, nervous system regulation and personalised nutrition, often alongside therapists and rehabilitation professionals. Over time, I found myself increasingly drawn towards these more complex cases. The people doing everything they have been asked to do, working hard with skilled professionals, yet recovery still feels slower, more unpredictable, or harder to understand than expected.  

That curiosity led me towards three areas that deserve wider conversation within rehabilitation - long-term stress physiology, intergenerational biology and nutrigenomics.  

The first is stress history. Many clinicians are already aware that prolonged stress influences healing, sleep, inflammation and pain perception. What becomes interesting is how far back some of those physiological patterns may go. Adverse childhood experiences (ACEs), chronic relational stress, repeated periods of unsafety, or years spent in heightened vigilance can shape autonomic regulation and HPA-axis activity long before an injury occurs.  

A nervous system that has spent decades managing high alert may respond differently to pain, rehabilitation load and sleep disruption than one with a different physiological history. This does not replace biomechanics or tissue healing, though it can widen understanding around why two people with similar presentations progress differently. This is where I have found a somatic and trauma-informed lens useful - not as a psychological explanation for pain, but as another layer of physiology worth considering.  

The second area is intergenerational biology. Research into epigenetics and stress transmission has moved well beyond fringe discussion. Studies involving famine, war trauma and prolonged stress suggest that cortisol regulation, immune responses and inflammatory patterns may influence future generations. What drew me towards this area was seeing how often family histories emerge in conversation. Recurring patterns of chronic pain, autoimmune illness, disrupted sleep or long-standing stress across generations can sometimes widen the rehabilitation picture and offer context where recovery feels harder to predict.  

The third area is nutrigenomics, which explores how genetic variation may influence neurotransmitter metabolism, inflammation, detoxification pathways and recovery patterns. It does not predict destiny or sit above clinical reasoning, though it can add another layer of understanding when progress feels unexpectedly complicated.  

Two examples appear regularly in pain and recovery work. COMT is an enzyme involved in clearing dopamine and adrenaline from the system. Certain variants slow that process, meaning some individuals may hold stress chemistry for longer and demonstrate greater sensitivity to stress and pain. Research has linked slower COMT activity with higher reported pain intensity and greater pain sensitivity in some populations.  

TNF-alpha, one of the body's inflammatory signallers, also varies genetically. Certain variants are associated with increased inflammatory signalling, which may influence recovery, soreness and response to physical load. These are only two examples among many. SNPs linked with inflammation, collagen formation, oxidative stress, methylation and recovery can all contribute to how a patient experiences rehabilitation. Standardised protocols remain valuable, though biology is rarely standardised.  

The same rehabilitation programme may meet very different physiology depending on who is sitting in front of you. Stress history, family patterns, sleep quality, inflammatory burden and genetic variation can all influence recovery. My interest in this area comes from recognising perspectives that sit alongside skilled clinical practice and may help explain some of the patients whose progress sits outside expected timelines.  

The people who often do well in rehabilitation are rarely defined by imaging alone. Broader questioning, multidisciplinary collaboration and complementary perspectives can sometimes help clinicians understand the person as well as the presentation. Pain does not always begin with tissue alone, and recovery sometimes asks us to look a little further than the scan.