A study on CRP and risk for lung cancer concluded that there is a possibility for its incidence in those with elevated concentrations; however, a recent multiethnic bidirectional Mendelian randomization did not reveal a causal association between CRP and lung cancer, and neither did another large study that also supported that circulating CRP could aid as a prediagnostic marker of lung cancer as early as 8 years in advance for current smokers [801,802,803]. Here, CRP is linked to lung cancer.