Indeed, in the 1960s, one study showed that a repressed
expression of emotions in cancer patients contributed to a type C
personality (‘cancer-prone’). In a recent prospective study,37 patients
with breast cancer tended to have an increased risk for bearing the
‘high commitment’ characteristic, which could contribute to cancer
risk through immune and hormonal pathways. In this study, we
found that negative personality was likely associated with NSCLC.
We also confirmed that tobacco smoke (duration, smoking starting at
young age and pack-years) was associated with NSCLC risk