Effect Of Sudarshan Kriya Yog on IgG Levels Against Covid 19 and Cortisol Levels in Fully Vaccinated Subjects

Abstract

Background: The COVID-19 pandemic has created an urgent need to strengthen both immune defense and psychological resilience. While vaccination provides significant protection, variability in antibody responses and the negative impact of stress on immunity highlight the importance of complementary interventions. Stress elevates cortisol levels and suppresses immune function, whereas mind-body practices such as yoga may enhance immunity and reduce stress. Sudarshan Kriya Yoga (SKY), a rhythmic breathing technique, has been associated with both psychological and physiological benefits. This study was undertaken to evaluate the impact of SKY on immunoglobulin G (IgG) antibody levels against COVID-19 and serum cortisol in fully vaccinated adults. newlineAim and Objectives: To determine the impact of Sudarshan Kriya Yoga on IgG antibody levels against COVID-19 and on serum cortisol levels in vaccinated individuals. Objectives: To determine the levels of serum IgG and cortisol after one week of SKY practice in vaccinated participants. To determine the levels of serum IgG and cortisol after three weeks of practice. To compare IgG and cortisol levels after eleven weeks between intervention and control groups. newlineMaterial and Methods: This interventional study was designed to evaluate the effects of Sudarshan Kriya Yoga on IgG and cortisol levels in 222 vaccinated participants were recruited and divided equally into a yoga intervention group (n=111) and a control group (n=111). The mean age was 45.77 ± 9.75 years in the control group and 44.6 ± 11.46 years in the yoga group, with near-equal gender distribution. The intervention group received certified SKY training and practiced regularly, while the control group followed routine activity. Serum IgG antibodies against COVID-19 and serum cortisol were measured at baseline (week 1), week 3, and week 11 using standard immunoassays. newline newline