This is a consensus statement by a committee that included experts in allergy and clinical immunology, building engineering, environmental health, epidemiology, exposure assessment, microbiology, public health, and toxicology. The Institute of Medicine conducted a comprehensive review of the scientific literature regarding the relationship between damp or moldy indoor environments and the manifestation of adverse health effects, particularly respiratory and allergic symptoms. The review focused on the noninfectious health effects of fungi, including allergens, mycotoxins, and other biologically active products. Chapters include a multidisciplinary review of the literature on building issues related to wetness, mycology, epidemiology, as well as a review of the toxicology literature. In addition, it made recommendations or suggested guidelines for public health interventions and for future basic science, clinical, and public health research. This is the most up-to-date statement on the health effects of molds in indoor air. It includes a good bibliography, and a well-reasoned evaluation of a very difficult area of environmental science. It is available on the World Wide Web through the National Academies Press at www.nap.edu, or the Institute of Medicine at email@example.com, and will be available in portable document format (PDF) for printing.