The human gastrointestinal tract harbors a vast array of microorganisms, which play essential roles in maintaining metabolic balance and immune function. While bacteria dominate the gut microbiome, fungi represent a much smaller, often overlooked fraction. Despite their relatively low abundance, fungi may significantly influence both health and disease. Advances in next-generation sequencing, metagenomics, metatranscriptomics, metaproteomics, metabolomics, and computational biology have provided novel opportunities to study the gut mycobiome, shedding light on its composition, functional genes, and metabolite interactions. Emerging evidence links fungal dysbiosis to various diseases, including inflammatory bowel disease, colorectal cancer, metabolic disorders, and neurological conditions. The gut mycobiome also presents a promising avenue for precision medicine, particularly in biomarker discovery, disease diagnostics, and targeted therapeutics. Nonetheless, significant challenges remain in effectively integrating gut mycobiome knowledge into clinical practice. This review examines gut fungal microbiota, highlighting analytical methods, associations with human diseases, and its potential role in precision medicine. It also discusses pathways for clinical translation, particularly in diagnosis and treatment, while addressing key barriers to implementation.

Libraries contain a large amount of organic material, frequently stored with inadequate climate control; thus, mold growth represents a considerable threat to library buildings and their contents. In this essay, we review published papers that have isolated microscopic fungi from library books, shelving, walls, and other surfaces, as well as from air samples within library buildings. Our literature search found 54 published studies about mold in libraries, 53 of which identified fungi to genus and/or species. In 28 of the 53 studies, Aspergillus was the single most common genus isolated from libraries. Most of these studies used traditional culture and microscopic methods for identifying the fungi. Mold damage to books and archival holdings causes biodeterioration of valuable educational and cultural resources. Exposure to molds may also be correlated with negative health effects in both patrons and librarians, so there are legitimate concerns about the dangers of contact with high levels of fungal contamination. Microbiologists are frequently called upon to help librarians after flooding and other events that bring water into library settings. This review can help guide microbiologists to choose appropriate protocols for the isolation and identification of mold in libraries and be a resource for librarians who are not usually trained in building science to manage the threat molds can pose to library holdings.

Molds readily grow on wet books, documents, and other library materials where they ruin them chemically, mechanically, and aesthetically. Poor maintenance of libraries, failures of Heating, Ventilation, and Air Conditioning (HVAC) systems, roof leaks, and storm damage leading to flooding can all result in accelerated fungal growth. Moreover, when fungal spores are present at high concentrations in the air, they can be linked to severe respiratory conditions and possibly to other adverse health effects in humans. Climate change and the accompanying storms and floods are making the dual potential of fungi to biodegrade library holdings and harm human health more common. This essay is intended for microbiologists without much background in mycology who are called in to help librarians who are dealing with mold outbreaks in libraries. Our goal is to demystify aspects of fungal taxonomy, morphology, and nomenclature while also recommending guidelines for minimizing mold contamination in library collections.

Regulating national genome sovereignty presents a critical challenge, particularly when policy mechanisms designed to control population-level genomic data produce counterproductive outcomes. These policies primarily seek to prevent exploitation and protect privacy; however, they often generate unintended consequences in practice. Although such measures are intended to safeguard national interests and ensure the responsible use of genomic resources, they may also reduce opportunities for equitable participation in global genomic research. Restrictive governance frameworks can impede scientific exchange, delay biomedical discoveries, and limit the diversity of datasets required to advance precision medicine and public health. As genomic research increasingly depends on international collaboration and large-scale data sharing, balancing national sovereignty with scientific openness has become a central governance challenge. Stringent data restrictions can fragment scientific communities and ultimately restrict populations’ access to biomedical innovations they are intended to protect. We examine the structural origins of this tension through the lenses of ethics, data privacy, equity, and governance, highlighting the limitations of exclusionary, ownership-based approaches in genomic science. To resolve this paradox, we propose an Adaptive Genomic Sovereignty Stewardship Model (AGSSM), a flexible governance framework that emphasizes responsible stewardship, controlled access, reciprocity, and adaptive governance while safeguarding national strategic interests and facilitating open, equitable scientific collaboration. By balancing protection with responsible international cooperation, the AGSSM offers a practical pathway to strengthen public trust, support innovation, and ensure that the benefits of genomic research are shared more fairly.