Young people who drink heavily may be at risk of fatal liver disease. South_agency/Getty Images hide caption

An early prototype of the silicon-chip-sized particle accelerator that physicists at Stanford are working on. Eventually, miniature accelerators might have a role in radiating tumors, the scientists say. SLAC National Accelerator Laboratory hide caption

UCLA researchers are using a radioactive tracer, which binds to abnormal proteins in the brain, to see if it is possible to diagnose chronic traumatic encephalopathy in living patients. Warmer colors in these PET scans indicate higher concentrations of the tracer. UCLA hide caption

Some critically ill patients who received a CAR-T cell treatment have remained cancer-free for as long as five years, researchers say. But the price is high. Fanatic Studio/Collection Mix: Subjects RF/Getty Images hide caption

When the heart pushes too hard, as it does when blood pressure is elevated, it can cause damage that can lead to a stroke, says Dr. Walter Koroshetz. John Rensten/Getty Images hide caption

Information that could refine the uses of approved drugs may lie deep inside patients' medical records. Ariel Skelley/Getty Images hide caption

A homeless man in Denver draws heroin into a syringe. Treatment centers in the city say patterns of drug use seem to be changing. While most users once relied on a single drug — typically painkillers or heroin or cocaine — an increasing number now also use meth. Andy Cross/Denver Post via Getty Images hide caption

A drug user prepares a hit of heroin inside VANDU's supervised injection room. Rafal Gerszak for NPR hide caption

Time outdoors leaves you vulnerable to tick bites and the diseases they can transmit. New research seeks to a better picture of the geographic spread of ticks that carry dangerous pathogens. Ascent/PKS Media Inc. via Getty Images hide caption

Prescription opioids like OxyContin flooded Missouri during the past six years. Photo Researchers/Science Source hide caption

At safe injection sites like Insite, in Vancouver, Canada, drug users can inject drugs under the watch of trained medical staff who will help in case of overdose. Elana Gordon/WHYY hide caption

A new study finds certain drugs that can boost the immune system show promise for developing anti-aging treatments in the future. David Pereiras / EyeEm/Getty Images/EyeEm hide caption

Research shows that people taken to an emergency room after a suicide attempt are at high risk of another attempt in the next several months. But providing them with a simple "safety plan" before discharge reduced that risk by as much as 50 percent. FangXiaNuo/Getty Images hide caption

"Don't come near me until the permethrin on your clothes has dried." Manuel Breva Colmeiro/Getty Images hide caption

The Genetic Information Nondiscrimination Act still prohibits your insurer from using the results of genetic tests against you. But the ACA's additional protections may be in doubt if certain states get their way. Gary Waters/Ikon Images/Getty Images hide caption

Senate Majority Leader Mitch McConnell (from left), Supreme Court nominee Brett Kavanaugh and Vice President Pence met on Capitol Hill Tuesday, ahead of meetings with Republican senators. Democrats vow to challenge Kavanaugh's nomination in upcoming hearings. Chip Somodevilla/Getty Images hide caption

Activists outside the Supreme Court in January voiced their support for abortion rights nationwide. Alex Wong/Getty Images hide caption