“A small scientific study of veterans exposed to bomb blasts while serving in Iraq and Afghanistan uncovered signs of lasting brain damage even in cases where there were no outward symptoms such as headaches, dizziness or confusion,” USA Today reports.  

“Even though a soldier may not appear hurt by a blast wave doesn’t mean there aren’t small changes to the brain, concludes the report published Monday in The Journal of Head Trauma Rehabilitation.” “The authors cautioned that it remains unclear whether those changes will alter how the service member functions in the long run.”