Research published in Nicotine & Tobacco Research analyzed repeated cross-sectional survey data from 9,996 participants ages 16 and older who reported currently smoking. It found that while most smokers (76.9%) reported purchasing tobacco only from legal sources, 23.1% reported purchasing tobacco from illicit sources at least once in the previous six months during 2025, up from 12.2% in 2023.

An international team led by researchers at Hiroshima University has developed a new way to detect subtle, early-stage changes in human skin collagen before any visible signs of damage appear. The study, published in ACS Nano, reveals that the molecular organization and supramolecular chirality—or structural handedness—of dermal collagen collapse before the visible fiber network actually thins or fragments.

More than half of U.S. states are grappling with an outbreak of gastrointestinal illness caused by a foodborne parasite, America’s top health agency reported Tuesday.

Using computational tools, researchers from the Johns Hopkins Kimmel Cancer Center and the Johns Hopkins University School of Medicine have developed a method to predict which patients with a primary liver cancer called hepatocellular carcinoma (HCC) would most benefit from combination treatment using immunotherapy and a targeted therapy that blocks growth signals on which the tumor depends. The work, supported in part by the National Institutes of Health, was published online July 14 in the Proceedings of the National Academy of Sciences.

“I think you always believe it’s never going to happen to me.” That is how one parent described learning that their newborn baby had been identified as being at possible risk of a rare genetic condition through routine newborn screening.