http://www.smh.com.au/sport/greater-risk-of-concussion-for-women-experts-warn-as-codes-beckon-women-to-contact-sports-20180209-h0vuxe.html
Allegedly, at least what I've heard, the Doc kicking off all this debate in the media actuals gains funds from research sponsorship on female sports injuries.
But it's a known known, it's been known for decades, the unknown is the actual definitive cause and the potential cure.