How Indoor Air Quality Affects Respiratory Health in Winter and Summer +++

How Indoor Air Quality Affects Respiratory Health in Winter and Summer https://www.news-medical.net/health/How-Indoor-Air-Quality-Affects-Respiratory-Health-in-Winter-and-Summer.aspx From elevated winter levels of polycyclic aromatic hydrocarbons (PAHs) in schools to humidity-linked infection risk in older adults, this review reveals how seasonal changes in indoor air may influence respiratory health and what can be done to reduce the burden. The Role of the Gut Microbiome in Gastrointestinal Cancer Development This article explains how host–microbiome interactions contribute to gastrointestinal cancer risk through microbial genotoxins, metabolic signaling pathways, immune dysregulation, and tumor microenvironment remodeling in colorectal and gastric cancers. It synthesizes current evidence to show how dysbiosis, microbial metabolites, and pathogen-driven signaling alter epithelial integrity, inflammation, and therapeutic response. https://www.news-medical.net/health/The-Role-of-the-Gut-Microbiome-in-Gastrointestinal-Cancer-Development.aspx Why Are Respiratory Infections More Common in Winter? Why do respiratory viruses surge each winter? From cold air and indoor crowding to seasonal immune shifts and shifting RSV–influenza dynamics, the science reveals how winter creates the perfect storm for viral spread. https://www.news-medical.net/health/Why-Are-Respiratory-Infections-More-Common-in-Winter.aspx