STEVE INSKEEP, HOST:
OK, last time you visited a doctor, you may have seen somebody enter your information directly into a computer instead of on paper. Many doctors have computerized their records, and the federal government wants to see more of that.
The Department of Veterans Affairs is already there. Millions of vets already have their records online. Amy Standen, of our member station KQED, says that information could become raw material for medical research.
AMY STANDEN, BYLINE: What haunts Carl Schuler about his two tours in Iraq is the fact that he came out of them largely unscathed. This was not the case for his best friend, who was badly injured when his truck was hit by a roadside bomb.
CARL SCHULER: You start thinking about, well, how fair is that? You know, here's my best friend, this is how he ends up; you know, 80 percent burns, two members in the vehicle were killed. And here I am in a similar situation, and all of us ended up being OK. I mean, that's - it's a tough thing to deal with.
STANDEN: Back in the States, Schuler has struggled with problems that will sound familiar to a lot of vets. He's had to tame his road rage. And sometimes, he can be a bit withdrawn. What's gotten him through all of this is helping other returning soldiers. He's a counselor for vets who are having financial problems. And it was that same impulse - to help vets - that brought him to a VA Medical Center in Palo Alto, California, on a recent morning.
UNIDENTIFIED WOMAN #1: And last name, sir.
SCHULER: Schuler, S-C-H...
STANDEN: Schuler came to take part in something called the Million Veterans Program, or MVP. The idea is to build a huge database with both medical histories and blood samples from a million U.S. veterans. What makes this possible is that the VA has been keeping computerized medical records for more than two decades. Dr. Jennifer Hoblyn specializes in mental illness at the VA, Palo Alto.
DR. JENNIFER HOBLYN: Not only do we have all their clinical records, laboratory vital signs, pharmacy database, we have annual assessments that we will do that we can track people; assessments of depression, PTSD, suicide screening, alcohol and substances, traumatic brain injury.
STANDEN: The VA will remove the names, so the data is anonymous. Then, they'll pair the records with blood samples from a million U.S. vets. If they succeed, it will be the biggest medical database in the world.
ROBERT HIATT: This is actually a good thing all around, as far as I'm concerned.
STANDEN: Robert Hiatt is an epidemiologist at the University of California, San Francisco. He says when he was starting out in this field, he'd send data collectors with clipboards from doctor's office to doctor's office, pulling folders out of shelves and manually tallying up the numbers. But as this research has grown more sophisticated, scientists like Hiatt need far more data. Instead of hundreds of cases to compare, they now want thousands.
HIATT: Big numbers are important because the effects are small. And in order to detect small effects and to have some confidence in them, you need large numbers.
STANDEN: At the VA, a major focus of research is on post-traumatic stress disorder - PTSD - which is relatively common but hard to predict. Some soldiers suffer terribly. Others don't. To know why, you'd need to look for patterns across large numbers of veterans. Joel Kupersmith directs research for the Veterans Health Administration.
JOEL KUPERSMITH: We'll look at patients with PTSD, and patients who don't have PTSD, and then try to look at their genes and see if there's a gene that's there in the patients with PTSD that isn't in the patients who don't have it.
STANDEN: The answers, most likely, won't just be in the DNA. They'll have to do with complicated interactions of genes and environmental factors, like diet or where you come from.
UNIDENTIFIED WOMAN #2: Nice to meet you, too. Go ahead and have a seat.
STANDEN: Recently the Million Veteran Program signed on its 10,000th participant. Clinics, like the one in Palo Alto, are stepping up their recruitment efforts.
UNIDENTIFIED WOMAN #2: You're just going to feel a little poke.
STANDEN: Staff here say the number one concern they hear is about privacy - whether the information will make its way to employers or insurers. That means reassuring thousands of vets that the data cannot be connected with their names.
UNIDENTIFIED WOMAN #2: Nice and easy.
STANDEN: Carl Shuler says he knows that taking part in this program isn't likely to improve his own health, or even that of the soldiers that he served with. But he considers it an extension of his work to help other vets.
SCHULER: This was just another piece of that puzzle.
STANDEN: A way to continue his service, even now that he's back home.
For NPR News, I'm Amy Standen in San Francisco.