ACE2 protein protects against severe COVID-19 in women, study shows 1 According to new research, because women have two copies of the ACE2 protein, they are less likely to suffer from severe COVID-19, unlike men who have one copy. Female COVID-19 patients face less severe disease complications and a lower risk of dying than male patients thanks to hormones and chromosomes that contribute to a stronger immune response, according to new research. The study was conducted at the University of Alberta, Canada. “The highlight of our study is how the sex differences in COVID-19 are linked to a...