New study identifies key predictors of PFAS levels in US career firefighters
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Updates every hour. Last Updated: 25-Jun-2026 16:16 ET (25-Jun-2026 20:16 GMT/UTC)
Researchers at the University of Chicago Medicine have developed a set of polygenic risk score (PRS) models that significantly improved the ability to predict breast cancer risk in women of African ancestry. Using genetic data from more than 36,000 women, the team created the most comprehensive breast cancer prediction tool for this historically underserved population.
PHILADELPHIA—Pink noise—often used to promote sleep—may reduce restorative REM sleep and interfere with sleep recovery. In contrast, earplugs were found to be significantly more effective in protecting sleep against traffic noise, according to new study published in the journal Sleep from the University of Pennsylvania Perelman School of Medicine.
The findings challenge the widespread use of ambient sound machines and apps marketed as sleep aids.