Head injuries in sports

The Columbus Dispatch recently published the winning photos in its photo contest--semifinalist photo is 2 little boys colliding in a soccer game. They had on nifty uniforms, special shoes and knee socks--and no helmets or head protection. In his book
Making a good brain great, Daniel G. Amen, MD writes:
"A concussion or mild "traumatic brain injury" (TBI) is far more than just a bump on the head. According to the American Academy of Neurology, "There is no such thing as a minor concussion." A study from UCLA found that "the level of brain glucose use in people who suffered mild concussions was similar to that in comatose, severely brain-injured patients. . . Even mild head injuries result in major changes to the brain's metabolism and could make victims susceptible to more serious damage from a repeated blow."
Dr. Amen advises parents to never let their child knock the soccer ball with his head--heading drills, in which a child's head is knocked repeatedly, are of greater concern to pediatricians than is the occasional head-punt in a game. A study of adult soccer players found 81% had impairment of attention, concentration, memory, and judgment when compared to non-players of similar age and circumstances. He says football players are struck in the head 30-50 times per game and regularly endure blows similar to those experienced in car crashes.
Dr. Amen, who has seen over 30,000 brain scans, says: "I would not let my children hit a soccer ball with their heads, play tackle football, or snowboard without a helmet. I encourage my own kids to play tennis, golf, table tennis, and track. Your brain matters. Respect and protect it."