Mindlessly switching from your smartphone to other media devices and back again might lead to added pounds, scientists say. A small, new study found that heavy-duty media multitaskers also tended to be heavier, weight-wise. It’s possible that these devices are actually changing the brain, theorized lead author Richard Lopez, a postdoctoral fellow in psychology at…  read on >

Almost one in five multiple sclerosis patients may be misdiagnosed with the autoimmune disease, according to a new study. Of 241 previously diagnosed multiple sclerosis (MS) patients referred to two major Los Angeles medical centers for treatment, nearly 18% did not actually have the autoimmune disease, the researchers found. Those patients spent an average of…  read on >

Sunscreen may do double duty when you’re outside on a summer day, keeping you cool as it protects your skin from the sun’s harmful rays. New research suggests how: When unprotected skin is exposed to the sun’s ultraviolet (UV) rays, skin cells typically see a drop in levels of nitric oxide. This compound helps the…  read on >

Traffic pollution causes about 4 million new asthma cases in children worldwide each year, new research shows. Two-thirds of these kids live in urban areas, according to the study by researchers at George Washington University in Washington, D.C. “Our findings suggest that millions of new cases of pediatric asthma could be prevented in cities around…  read on >

Have you started feeling like your allergies are acting up earlier every year, or maybe they’re lasting longer? New research suggests it’s not just your imagination — climate change appears to be disrupting nature’s usual calendar. Areas with an earlier spring had a 14% higher rate of seasonal allergies (hay fever), the researchers found. “Climate…  read on >

Living near a major road may significantly increase a young child’s risk of developmental delays, a new study claims. It also found that children whose mothers were exposed during pregnancy to high levels of specific types of traffic-related air pollution had slightly higher odds of developmental delays. “Our results suggest that it may be prudent…  read on >

Scotland is already seeing a payoff for vaccinating adolescent girls for human papillomavirus (HPV). Since the vaccine became routine about a decade ago, cervical cancer cases in young Scottish women have plummeted, a new study reports. HPV is one of the most common sexually transmitted infections. Vaccination protects against HPV types 16 and 18, which…  read on >

Scientists have been cataloging bacteria and fungi inside the International Space Station (ISS), and they say their efforts will should keep astronauts safe and could also have benefits on Earth. The team analyzed samples collected from eight locations on the space station during three flights across 14 months. The samples came from the viewing window,…  read on >

U.S. health officials say they are investigating an outbreak of E. coli gastrointestinal illness that’s already affected 72 people across five Eastern states. The origin of the foodborne illnesses remains unknown, the U.S. Centers for Disease Control and Prevention said late Friday. “The investigation is still ongoing and a specific food item, grocery store, or…  read on >