The most authoritative study conducted on the disorder and Vietnam veterans, in 1988, the National Vietnam Veterans Readjustment Study, estimated that at the time, 500,000 of the 3.14 million Americans who served in Vietnam had P.T.S.D., and a total of 1 million had experienced it at some point.
Even as Vietnam veterans now enter their 60s and begin to die off, the number seeking P.T.S.D. treatment is growing — up 11.6 percent from 2003 to 2005, the latest figures available. “We have new Viet vets coming in every week,” said David Bressem, who runs the Vet Center clinic here and is Mr. Van Cott’s therapist.
On so many fronts, the country still pays for the Vietnam War.
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