The present century health care system has made great innovations for the diagnosis and treatment of diseases. Despite this, the diagnosis of parainflammation is difficult due to absence of symptoms in individuals. The development of diseases could generally be mitigated by early detection and control of parainflammation since it appears to be a unifying factor for infectious and non-infectious diseases. The present review describes the value of the neutrophil to lymphocyte ratio as a biomarker for the detection of parainflammation in disease asymptomatic (apparently healthy) individuals.