Boxing safely

Hi, i'm a physics student, i have done boxing for 5 or 6 yesrs since middle school, however after highschool i stopped due to an injury. Since then i tried a couple of different sports but none interest me like boxing; i'm worried weather i can do it safely enough to not have any brain damage in the long run. Has anyone done boxing while studying? And if so do they have any damage because of it?
Any answer is useful, thanks