Head injury’s effects may last

Associated Press

CHICAGO — Concussions and other head injuries in early adulthood may significantly raise the risk of depression decades later, a new study warns, raising disturbing implications for football and hockey players, motorcyclists and others who have taken blows to the head.

Other research has shown that head trauma patients may be prone to depression shortly after suffering their injuries. But the new findings suggest that the risk persists even 50 years later.

The study involved 1,718 World War II veterans hospitalized for various ailments during the war and questioned 50 years later. About 11 percent who had had head injuries said they currently had major depression, compared with 8.5 percent of those hospitalized during the war for other reasons.

Overall, the lifetime prevalence of major depression was 18.5 percent in the head-injury group and 13.4 percent among the other veterans, Drs. Tracey Holsinger and Brenda Plassman of Duke University and colleagues reported in January’s Archives of General Psychiatry.

The researchers found similar depression rates in veterans who had suffered their head injuries in combat and in those whose injuries occurred elsewhere. Thus it is unlikely that post-traumatic stress syndrome, which can include symptoms of depression, would explain the findings, the researchers said.

Plassman said the findings could mean that people who suffer head injuries today — for example, football players or motorcyclists — will have a greater risk of depression. A sizable portion of the veterans who suffered head injuries did so in noncombat situations such as motor vehicle accidents and sports, she said.

Men with the most severe head injuries — loss of consciousness or amnesia for a day or more — faced a higher risk of developing depression than men with the most mild injuries — those who blacked out or had amnesia for less than 30 minutes, the study found.