Health & Science

A look at the brain's wiring can often reveal whether a person has trouble staying focused, and even whether he or she has attention deficit hyperactivity disorder, known as ADHD.

A team led by researchers at Yale University reports that they were able to identify many children and adolescents with ADHD by studying data on the strength of certain connections in their brains.

Doctors, patients and insurers have been struggling with how to determine who should be treated for hepatitis C now that effective but wildly expensive drugs can all but cure the disease. Treating prison inmates is a good investment that would save money in the long run, a study finds.

Board meetings for the Mendocino Coast District Hospital are usually pretty dismal affairs. The facility in remote Fort Bragg, Calif., has been running at a deficit for a decade and barely survived a recent bankruptcy.

But finally, in September, the report from the finance committee wasn't terrible. "This is probably the first good news that I've experienced since I've been here," said Dr. Bill Rohr, an orthopedic surgeon at the hospital for 11 years. "This is the first black ink that I've seen."

A government watchdog says the Department of Homeland Security can't say for sure whether its system to detect a biological terror attack actually works.

In a report released Monday, the Government Accountability Office says the BioWatch system has issued dozens of false alarms since its introduction. It recommends that Homeland Security, which oversees the system, hold off any upgrades until the department can be sure of BioWatch's current capabilities.

The Consumer Technology Association forecasts that 400,000 drones will be sold in the United States this holiday season. That's not to mention the commercial drones being developed by Google (now known as Alphabet), Amazon, Wal-Mart and others.

If you've ever been vaccinated, you may have seen the nurse head out of the room to go to the refrigerator to retrieve your injection. That's because most vaccines must be refrigerated during travel and storage or they lose their effectiveness.

Vaccines typically need what's known as a "cold chain." From the point of manufacture to the place where they're used, they need to be kept within a narrow temperature range, typically between 35 and 46 degrees Fahrenheit.

Only 19 percent of Americans — about 1 in 5 — say they trust the government "always or most of the time," according to a study released by the Pew Research Center on Monday. Yet clear majorities also favor the government taking "a major role" in fighting terrorism, responding to natural disasters, keeping food and drugs safe, protecting the environment, strengthening the economy and improving education.

Remember the headlines a few weeks back, when the World Health Organization categorized red and processed meats as cancer-causing?

Turns out, the techniques you use to prepare your meat seem to play into this risk.

As we launch into Thanksgiving week, consider this: Research shows that feeling grateful doesn't just make you feel good. It also helps — literally helps — the heart.

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