A Convergence Model of Carcinogenesis: Chronic Inflammation as a Unifying Biological Mechanism

Abstract

Cancer is increasingly recognised as a multifactorial disease arising from interactions between inherited susceptibility, environmental exposures, occupational hazards, lifestyle behaviours and chronic disease. Although chronic inflammation is widely acknowledged as an important contributor to tumour development, it is generally considered as one component within a complex network of carcinogenic mechanisms. This paper proposes an alternative interpretation: that chronic inflammation may represent a unifying biological mechanism through which diverse carcinogenic influences accumulate and interact. The hypothesis emerged directly from observations reported in the author’s previously published pilot survey of 134 individuals with medically diagnosed cancer. Rather than identifying isolated risk factors, the survey demonstrated that most participants exhibited multiple concurrent environmental, hereditary and lifestyle exposures, with approximately 71% presenting five or more recognised cancer risk factors. Chronic inflammatory conditions were also highly prevalent. These observations prompted consideration of whether apparently unrelated risk factors might converge through common inflammatory pathways. Current understanding of inflammatory biology demonstrates that persistent inflammation promotes oxidative stress, genomic instability, cytokine signalling, angiogenesis, immune dysregulation and tumour progression. Collectively, these mechanisms provide a biologically plausible explanation for how multiple carcinogenic influences may exert cumulative effects. The present hypothesis does not replace established models of carcinogenesis. Instead, it proposes a convergence framework that integrates existing evidence and provides a testable basis for future investigation into the role of chronic inflammation in multifactorial cancer risk.