Effect of Wi-Fi Radiation on Heart Rate Variability, Salivary Cortisol Level and Cognition

The study aims to analyse the effects of Wi-Fi radiations from mobile phone towers on the level of salivary cortisol , its effects on cardiovascular system , and on the cognitive levels of the subjects. on thirty six subjects exposed to Wi-Fi radiation from mobile phone tower (Group I) and thirty six subjects not exposed to Wi-Fi radiation from mobile phone tower (Group II). The frequency domain parameters of Heart rate variability, salivary cortisol level between both the groups was statistically significant. LF,LF/HF component was increased in Group I, HF component was increased in Group II which signifies parasympathetic withdrawal and sympathetic dominance in Group I. Cognition level was slightly increased in Group II but not statistically significant between both the Groups.