Scientist discovers link between Covid-19 and 5G Coronavirus disease (COVID-19) public health policy has focused on the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus and its effects on human health while environmental factors have been largely ignored. In considering the epidemiological triad (agent-host-environment) applicable to all disease, we investigated a possible environmental factor in the COVID-19 pandemic: ambient radiofrequency radiation from wireless communication systems including microwaves and millimeter waves. SARS-CoV-2, the virus that caused the COVID-19 pandemic, surfaced in Wuhan, China shortly after the implementation of city-wide (fifth generation [5G] of wireless communications radiation [WCR]), and rapidly spread globally, initially demonstrating a statistical correlation to international communities with recently established 5G networks. In this study, we examined the peer-reviewed scientific literature on the detrimental bioeffects of WCR and identified several mechanisms by which WCR may have contributed to the COVID-19 pandemic as a toxic environmental cofactor. By crossing boundaries between the disciplines of biophysics and pathophysiology, we present evidence that WCR may: cause morphologic changes in erythrocytes including echinocyte and rouleaux formation that can contribute to hypercoagulation; impair microcirculation and reduce erythrocyte and hemoglobin levels exacerbating hypoxia; amplify immune system dysfunction, including immunosuppression, autoimmunity, and hyperinflammation; increase cellular oxidative stress and the production of free radicals resulting in vascular injury and organ damage; increase intracellular Ca2+ essential for viral entry, replication, and release, in addition to promoting pro-inflammatory pathways; and worsen heart arrhythmias and cardiac disorders. Source of full research: (https://bit.ly/3I8zRZP)