At a Pentagon that keeps statistics on just about everything, there is no central clearinghouse for this kind of data, and the Army hasn't consistently asked about prescription-drug use, which makes it difficult to track. Given the traditional stigma associated with soldiers seeking mental help, the survey, released in March, probably underestimates antidepressant use. But if the Army numbers reflect those of other services — the Army has by far the most troops deployed to the war zones — about 20,000 troops in Afghanistan and Iraq were on such medications last fall. The Army estimates that authorized drug use splits roughly fifty-fifty between troops taking antidepressants — largely the class of drugs that includes Prozac and Zoloft — and those taking prescription sleeping pills like Ambien.
In some ways, the prescriptions may seem unremarkable. Generals, history shows, have plied their troops with medicinal palliatives at least since George Washington ordered rum rations at Valley Forge. During World War II, the Nazis fueled their blitzkrieg into France and Poland with the help of an amphetamine known as Pervitin. The U.S. Army also used amphetamines during the Vietnam War.
The military's rising use of antidepressants also reflects their prevalence in the civilian population. In 2004, the last year for which complete data for the U.S. are available, doctors wrote 147 million prescriptions for antidepressants, according to IMS Health, a pharmaceutical-market-research firm. This number reflects in part the common practice of cycling through different medications to find the most effective drug. A 2006 federally funded study found that 70% of those taking antidepressants along with therapy experience some improvement in mood.
When it comes to fighting wars, though, troops have historically been barred from using such drugs in combat. And soldiers — who are younger and healthier on average than the general population — have been prescreened for mental illnesses before enlisting.
The increase in the use of medication among U.S. troops suggests the heavy mental and psychological price being paid by soldiers fighting in Iraq and Afghanistan. Pentagon surveys show that while all soldiers deployed to a war zone will feel stressed, 70% will manage to bounce back to normalcy. But about 20% will suffer from what the military calls "temporary stress injuries," and 10% will be afflicted with "stress illnesses." Such ailments, according to briefings commanders get before deploying, begin with mild anxiety and irritability, difficulty sleeping, and growing feelings of apathy and pessimism. As the condition worsens, the feelings last longer and can come to include panic, rage, uncontrolled shaking and temporary paralysis. The symptoms often continue back home, playing a key role in broken marriages, suicides and psychiatric breakdowns. The mental trauma has become so common that the Pentagon may expand the list of "qualifying wounds" for a Purple Heart — historically limited to those physically injured on the battlefield — to include posttraumatic stress disorder (PTSD). Defense Secretary Robert Gates said on May 2 that it's "clearly something" that needs to be considered, and the Pentagon is weighing the change.
Using drugs to cope with battlefield traumas is not discussed much outside the Army, but inside the service it has been the subject of debate for years. "No magic pill can erase the image of a best friend's shattered body or assuage the guilt from having traded duty with him that day," says Combat Stress Injury, a 2006 medical book edited by Charles Figley and William Nash that details how troops can be helped by such drugs. "Medication can, however, alleviate some debilitating and nearly intolerable symptoms of combat and operational stress injuries" and "help restore personnel to full functioning capacity."
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