From Newsleader.com July,2016
Sports like girls soccer have been calculated to result in 33 concussions per 100,000 player outings and wrestling has about 24 concussions per 100,000 player outings a year, according to The Head Case Co. In comparison, the most recent study — completed in 2012 — shows that at least one football player sustains a concussion for every game played.

On the same note, while soccer has fewer concussions per year when compared to football, the severity of concussions sustained in soccer is significantly higher.

In the entire article girls lacrosse was never mentioned...

my daughter's friend plays on a team where they are all forced to wear them and she says she has a headache during and after every time she wears the head gear.