It’s Not Just Stress – It’s Believing Stress Is Killing You That May Actually Kill You Sooner
A 2012 Health Psychology study with prospective mortality follow-up shows a surprising interaction effect
As professionals in medicine, psychology, public health, organizational leadership, or coaching, we routinely counsel patients and employees about “managing stress.” We cite the well-established links between chronic stress and poor cardiovascular, immune, and mental health outcomes. But a decade-old paper that still feels remarkably fresh reminds us that the subjective appraisal of stress may be just as important as the objective load – and in some cases, even more predictive of hard endpoints like death.
Keller and colleagues (2012) asked a deceptively simple additional question in a large, nationally representative U.S. sample:
“How much do you think stress has affected your health in the past year – a lot, some, hardly any, or not at all?”
The results, published in Health Psychology, are worth revisiting.
The Study at a Glance
Data source: 1998 National Health Interview Survey (NHIS) Sample Adult Core + supplemental module (n ≈ 28,753 adults after exclusions)
Weighted to represent ~186 million U.S. adults
Prospective mortality linkage via the National Death Index through 2006 (8–9 years follow-up)
Key independent variables:
Amount of stress experienced in the past year (4 levels: almost none → a lot)
Perceived effect of stress on health (3 levels collapsed: hardly any/none, some, a lot)
Outcomes: Self-rated health, psychological distress (Kessler-6), and all-cause mortality
Fully adjusted for sociodemographics, income, smoking, physical activity, chronic conditions, insurance status, etc.
Main Findings
Both higher stress and the belief that stress harms health were independently associated with
Worse self-rated health
Higher psychological distress (ORs up to 7.35 for high stress and 5.10 for strong belief)
For mortality, the interaction term was what mattered.
Neither variable alone significantly predicted all-cause death after full adjustment.
But individuals who reported a lot of stress AND believed it affected their health a lot had a 43% increased risk of premature mortality (HR = 1.43, 95% CI 1.20–1.71).The authors estimate this synergistic perception–stress combination was associated with approximately 20,000 excess U.S. deaths per year during the follow-up period – a public-health burden comparable to Parkinson’s disease or hypertension-related mortality at the time.
Why This Matters Clinically and Organizationally
This interaction aligns beautifully with Lazarus and Folkman’s transactional model: secondary appraisal (how threatening we judge the stressor to be and whether we believe we can cope) drives the physiological response at least as much as the primary stressor itself.
Possible mechanisms the authors and subsequent literature suggest:
Heightened vigilance to somatic symptoms → amplified allostatic load (McEwen)
Lower perceived control or resilience → poorer health behaviors or treatment adherence
A form of nocebo effect: expecting harm from stress may become self-fulfilling
We now have experimental evidence (Crum et al., 2013; 2017) that adopting a “stress-is-enhancing” mindset can blunt cortisol responses and improve performance under pressure. The Keller findings provide the rare prospective mortality evidence that the opposite mindset – “stress-is-debilitating” – may literally shorten lives when paired with high objective stress.
Practical Implications for Professionals
Screen for mindset, not just stress load. Add one or two questions in intake forms or wellness assessments: “To what extent do you believe the stress in your life is harming your health?” High endorsers under high load are a higher-risk subgroup.
Target stress appraisal in interventions. Cognitive reappraisal, mindset coaching (“stress can enhance focus and energy”), and resilience training (e.g., Penn Resilience Program, SMART stress training) move beyond simple relaxation techniques.
Corporate wellness programs should measure and track employees’ stress mindsets longitudinally – they may be more predictive of absenteeism, healthcare claims, and even turnover than traditional stress scores.
Patient education matters. Telling someone “stress is killing you” without context may paradoxically worsen outcomes. Frame it as “Your body is built to handle short bursts of stress; chronic uncontrollable stress is the problem – and we can increase your sense of control.”
Reference
Keller, A., Litzelman, K., Wisk, L. E., Maddox, T., Cheng, E. R., Creswell, P. D., & Witt, W. P. (2012). Does the perception that stress affects health matter? The association with health and mortality. Health Psychology, 31(5), 677–684. https://doi.org/10.1037/a0026743
Full text (open access): https://pmc.ncbi.nlm.nih.gov/articles/PMC3374921/
Fourteen years later, this paper remains one of the strongest pieces of evidence that how we think about stress can be just as consequential as the stress itself. In high-stakes professions where stress is non-negotiable, teaching people to relate to stress differently may be one of the highest-leverage interventions we have.