Hair extensions may contain chemicals linked to cancer and reproductive issues
A new study finds a variety of hair extensions—from natural to synthetic—contain chemicals associated with cancer, birth defects and reproductive issues
Top medical groups join forces to review vaccine science as CDC faces criticism
The American Medical Association is launching an effort to evaluate vaccine safety and effectiveness independently of U.S. government health agencies
Brain swelling is one of measles’ nastiest side effects, and it’s happening in South Carolina
The South Carolina measles outbreak has triggered rare but serious brain swelling in some children
A ‘shadow CDC’ is scrambling to fill gaps in public health data
Dozens of routinely updated CDC databases have gone quiet. Here’s what states and medical societies are doing to preserve U.S. public health
A century of hair clippings show lead exposure rates have plummeted
There’s no safe level of exposure to lead—but a small, strange study shows we’ve made incredible progress in recent decades
U.S. life expectancy hits all-time high
Americans are living longer than ever but still well behind the life expectancy of other developed countries
Babies who attend daycare share ‘good’ germs, too
Socializing children at a young age helps them develop greater diversity in their microbiome, according to an analysis of baby-to-baby transmission of gut bacteria
Sonic booms can protect Earth from dangerous space junk
Scientists are using technology developed to study earthquakes to address an out-of-this-world risk
RSV is surging—antibody shots and vaccines can protect babies
Cases of respiratory syncytial virus are increasing, but vaccines and antibody shots can keep young children out of the hospital
As the U.S. marks a year of measles outbreaks, is the disease back for good?
The U.S. has held its measles-free status for more than 25 years. Experts say unrelenting outbreaks in the past year may change that
EPA’s pollution rule change worries experts, cancer survival hits milestone, and astronauts evacuate the ISS
Why the EPA’s air pollution rule change could make the air dirtier, how cancer survival hit a record-high, and what we know about the first-ever medical evacuation from the International Space Station
CDC Will Continue a Controversial Vaccine Study in Africa
This clinical trial in Guinea-Bissau would withhold vaccination from some babies, sparking ethical concerns