2021-05-08: Teenage girls face almost double the risk of concussion playing soccer, compared with teenage boys (risk ratio 1.88, 95% confidence interval 1.69 to 2.09, P<0.001)…. Reported by Gareth Iacobucci. COMMENT: This report is based on a good study and is to be believed, but it raises a question: what’s the difference between boys and girls? The two explanations I can think of are: (1) Concussion in soccer is due mostly to blows to the head sustained in “heading” the ball …. when something hits the head, the blow is transmitted to the brain under the point of impact, causing…