In an interview with USA Today, Chastain said she wanted scientists to use her brain to try to understand concussions and chronic traumatic encephalopathy, a degenerative disease that has been found in the brains of athletes who have taken repeated blows to the head.
"Hopefully, what can be learned is, can doctors and scientists and neuroscientists look at the brain of someone like me, who has been playing soccer a majority of my life, and really dissect the brain and say, 'Here's where we see it beginning?' Could we then use that information to help say that before the age of 14, it's not a good idea to head the ball?'" Chastain told USA Today.
"No female athletes have been found to have had C.T.E. — it has been found in the brains of women with histories of head trauma — but the sample size has been small. Researchers at Boston University have examined 307 brains, most of which belonged to athletes. Only seven of them were women's.
"But with soccer's worldwide popularity and its growth among girls inspired by the likes of the United States' women's national soccer team, researchers are eager to learn more."
Cindy Parlow Cone, another former U.S. national team player, has also donated her brain to science.
When Chastain was asked by the Times if she had talked with teammates, she said: "I haven't had conversations with present players. I've had conversations with Cindy Parlow, Kristine Lilly, Mia. I don't really think it's a topic of conversation at this level. I think Abby Wambach — I'm trying to get her to come onboard because I think she will be an interesting brain study, decades from now, as the player who scored 75 goals with her head and probably put her head into places, like Michelle Akers, where they probably didn't belong. How many times did she hit her head on the ground after being run over by somebody?"
Chastain's brain will go to Boston University, which has led the way in the study of CTE.