A violent jolt or blow to the head can cause a traumatic brain injury (TBI), a condition that can cause temporary or lasting damage to the brain. TBIs can even cause changes to the tiny blood vessels in the brain. Now researchers think that these changes to the brain's blood vessels are linked to a number of cognitive symptoms, according to a new s...

(This is part 2 of a 2-part series on sports-related concussion injuries) A concussion is an injury to the brain that occurs when the brain "bounces" off the skull. While your skull and a thin protective layer of cushioning fluid provide some degree of protection against minor bumps, they can't protect against a forceful collision with a hard surfa...

(This is part 1 of a 2-part series on sports-related concussion injuries) The 2017 school year is in full swing for many kids across the country, and it's about to begin for millions more. That means plenty of kids will be returning to sports and socializing on the school playground, and unfortunately, it also means they'll be at an increased risk ...