CRP and cancer: Increased levels of some inflammatory markers were observed in firefighters, e.g., pro-inflammatory cytokines or C-reactive protein (CRP), which may lead to occurrence local, acute inflammation that promotes a systemic inflammatory response (Gianniou et al. 2018; Barros et al. 2021), and thus may develop of cancer or other diseases (Han et al. 2018) (Table 4).