Really interesting new insight into autoimmunity...
"Such immune system disorders also disproportionately affect women. In the US, four in every five autoimmune patients are women.
New research has found this can be traced to an interaction between the two X chromosomes in people who've got a pair, predominantly cisgender women.
When there's two X chromosomes available, a cell can only use the information from one, or things get a bit messy."