The excessive burst of new brain cells
after a traumatic
head injury that scientists have traditionally believed helped in recovery could instead lead to epileptic seizures and long - term cognitive
decline, according to a new Rutgers New Jersey Medical School study.
Dr Rissel added that
after helmets were made compulsory, he and his colleague discovered «a continued but
declining reduction in the ratio of
head injuries to arm
injuries [and]... it is likely that factors other than the mandatory helmet legislation reduced
head injuries».