Women with higher blood levels of two common per- and polyfluoroalkyl substances, also familiarly known as PFAS, were more likely to develop estrogen receptor-negative, or ER-negative, breast cancer, according to a new study by the National Institutes of Health (NIH), part of the U.S. Department of Health and Human Services (HHS). PFAS are a large group of chemicals used in common consumer products. Often referred to as “forever chemicals,” PFAS do not break down easily in the environment and can remain in the body for years.

Results from a clinical trial funded by the National Institutes of Health (NIH) in five major United States cities show that delivering integrated HIV and substance use disorder (SUD) services using peer navigation in mobile medical units reduced all-cause deaths by 71% compared to participants who received peer navigation to community-based services alone. While scientists found no difference in the use of daily, oral preexposure prophylaxis (PrEP) and medication for opioid use disorder (MOUD) between the groups, the secondary outcome of reduced mortality was significant.

An NIH-funded scientific team has shown that a new brain-computer interface (BCI) can allow people with vocal tract and bodily paralysis to convey both speech and upper-body gestures simultaneously. While BCIs have facilitated one or the other in the past, this new system is the first to enable both modes of communication at once, more closely replicating natural expression.

An NIH-funded study has shown that the GLP-1 drug semaglutide extended lifespan in older, healthy mice by tempering the detrimental effects of aging. Researchers directly compared the effects of the treatment to those of reduced food intake, finding that the drug mimicked the anti-aging benefits of calorie restriction, conferring even greater benefits in some areas.

A National Institutes of Health (NIH)-funded scientific team has shown that under the right circumstances, 3D cell culture models of human brain tissue, known as organoids, can express features of later stage brain development. This breakthrough could turn previously unattainable, long-term, benchtop studies of neurodevelopmental disorders into a reality.