“…5,9,36 Third and opposite, a background condition of chronic low T levels -which is estimated to characterize up to 20% of middle-aged/elderly men 27 -may facilitate overall greater incidence, higher severity, and greater probability of fatal events in men compared to women. 5 Fourth, SARS-CoV-2 needs androgen-regulated proteins to invade host cells, including TMPRSS2 for S priming and ACE2 for viral entry, which are expressed in multiple tissue 9,14,37,38 ; thereof, the high ACE2 expression in spermatogonia, Leydig, and Sertoli cells may eventually explain the case of a functional dysregulation in T production 28,29 and spermatogenesis 39,40 at the testicular level. Here, we hypothesize that the virus-host interaction mechanism in males is different, and more acutely linked to SARS-CoV-2 infection per se.…”