Cognitive function and other physiological factors, such as stress levels, have long been associated with physiological health and immunocompetence. Markers of cognitive function, such as reaction time, vigilance, and processing speed, are central to human ability and optimal performance. Variability in these measures is common, as numerous environmental, physical, and mental factors can modify them, including sleep quality, dietary patterns, and other lifestyle choices.
A burgeoning body of scientific evidence suggests that intra-individual variability reaction time and other cognitive performance markers may reflect neurobiological disturbances and, thus, have valuable prognostic significance. Prior research has shown that a heightened variability in reaction time is explicitly associated with greater mortality risk in both younger and older adults. Now, the results of a recent 2022 study reveal a potential connection between cognitive performance and disease susceptibility that could transform our understanding of and approach to the brain-immune system pathway.
Cognitive performance is a critical capability that allows individuals to function accordingly in their everyday lives; it provides humans with the capacity for sustenance and self-preservation and the free will to engage in activities of their choice. However, many researchers have posed a question regarding the sustainability of the human body’s cognitive performance, particularly because cognition may not be an all-enduring ability and is subject to different levels of degradation.
Several studies have proposed this concept, and research shows that several factors could affect a person’s cognitive ability, along with the discovery that multiple types of cognition correlate to specific functionality in the human body.
After several assessments of this proposed thesis, oxidative stress was considered one of the most significant factors correlated to a decrease in cognitive performance. This type of degradation is associated with the inherent decline of the body – aging.