much higher rate of autoimmune disorders observed in females which he attributes to females having cellular heterogeneity due to their two populations of cells using two different X chromosomes combined with their more robust immune system. In the final chapter of the book, Moalem argues why sex chromosomes matter in medicine as he calls for a long-overdue reconsideration of our male-centric, one-size-fits-all view of the body, a view that even today continues to frame women through the lens of men. The Better Half'' has been translated into 21 languages and made the PEN/E. O. Wilson Literary Science Writing Award longlist for 2021. References External links http://sharonmoalem.com Farrar, Straus and Giroux Living people American geneticists University of Toronto alumni Icahn School of Medicine at Mount Sinai alumni Jewish physicians American physicians Year of birth missing (living people)