Testing by the VA found 44, 500 of 570, 000 Iraq and Afghanistan vets had suffered what it called mild traumatic brain injuries.

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Dr. Wendy Wright, a neurologist who has not been involved in my care, said the medical field is still evolving in treating mild traumatic brain injuries such as concussions.

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There are an estimated 1.5 million mild to moderate brain injuries, predominantly concussions, in the U.S. each year with 75% of people seeking medical care.

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