CIENCIASMEDICASNEWS

miércoles, 15 de julio de 2026

More than 50 million Americans lack local radiation cancer treatment

https://www.news-medical.net/news/20260715/More-than-50-million-Americans-lack-local-radiation-cancer-treatment.aspx Radiation oncology treatment sites are quietly disappearing across the United States, leaving more than 50 million people without a local practice site, according to a new national study. A new study published in the International Journal of Radiation Oncology • Biology • Physics shows that beneath stable national figures, radiation oncology treatment sites are disappearing unevenly across the United States, leaving more than 50 million Americans without a local practice site.

Life sciences leaders face urgent workforce redesign challenge as AI reshapes productivity, skills and operating models

https://www.news-medical.net/news/20260715/Life-sciences-leaders-face-urgent-workforce-redesign-challenge-as-AI-reshapes-productivity-skills-and-operating-models.aspx As artificial intelligence continues to transform drug discovery, clinical development, manufacturing, commercial operations and enabling functions across life sciences, senior HR and workforce transformation leaders are facing a new strategic challenge: how to redesign work, skills and operating models for an AI-enabled future.

Study sheds light on the prognostic value of blood test for predicting cognitive impairment risk

https://www.news-medical.net/news/20260715/Study-sheds-light-on-the-prognostic-value-of-blood-test-for-predicting-cognitive-impairment-risk.aspx A blood test for the biomarker phosphorylated tau 217 (p-tau217) recently received federal clearance, but questions have emerged around the extent to which such tests can accurately predict whether a cognitively healthy individual will go on to develop cognitive impairment-a key symptom of Alzheimer's disease. A new, international study involving researchers across three continents and led by experts from the Mass General Brigham Neuroscience Institute sheds new light on the prognostic value of such tests. The study found that cognitively unimpaired individuals with very high levels of the biomarker had a 38% absolute risk of developing cognitive impairment over the next five years-and higher risk over the next 10 years. Results are presented at the Alzheimer's Association International Conference and simultaneously published in JAMA.

Cured Meats, Nitrates, and Cancer Risk: Why Food Source and Processing Matter

https://www.news-medical.net/health/Cured-Meats-Nitrates-and-Cancer-Risk-Why-Food-Source-and-Processing-Matter.aspx Cured and processed meats can promote the formation of carcinogenic N-nitroso compounds through nitrite chemistry, heme iron, smoking, and high-temperature cooking. Evidence most strongly links regular processed meat intake with increased colorectal cancer risk, while plant-derived nitrate behaves differently within an antioxidant-rich food matrix.

Blood circRNAs may predict Alzheimer’s before symptoms emerge

https://www.news-medical.net/news/20260702/Blood-circRNAs-may-predict-Alzheimere28099s-before-symptoms-emerge.aspx?utm_source=news_medical_newsletter&utm_medium=email&utm_campaign=alzheimer_s_disease_newsletter_9_july_2026 A blood-based circRNA signature could help identify early Alzheimer’s biology and progression risk, offering a promising new layer beyond amyloid and tau testing. In a recent study published in the journal Nature Medicine, researchers identified circular ribonucleic acids (circRNAs) in blood with high predictive value for biomarker-confirmed early Alzheimer’s disease (AD) diagnosis. Combining these circRNAs with established markers, such as phosphorylated tau-217 (pTau217), yielded the highest predictive ability. These findings suggest that circRNA investigations could eventually complement blood-based AD biomarker panels to identify people with early AD biology or elevated progression risk. However, the findings need to be validated in larger, diverse prospective clinical cohorts.

NIST Receives New Patent for Microbe-Killing Water Heater July 14, 2026

https://www.nist.gov/news-events/news/2026/07/nist-receives-new-patent-microbe-killing-water-heater It’s easy to take hot running water for granted. Simply twist a knob, and it comes pouring out. But hot plumbing comes with a risk — the potential growth of harmful bacteria. Researchers at the National Institute of Standards and Technology (NIST) have just been granted a patent for a water heater system that kills a class of harmful bacteria, reducing the risk of Legionnaires’ disease and other life-threatening infections, while reducing the associated risk of scalding. Warm water in household pipes can be a breeding ground for harmful bacteria. Raising water heater temperatures kills bacteria more thoroughly but can also scald human skin. NIST researchers have secured a patent for a water heater design that raises water temperature to kill harmful bacteria before cooling it to a safe temperature.