ⓘ Health effects by subject ..

Health effect

Health effects are changes in health resulting from exposure to a source. Health effects are an important consideration in many areas, such as hygiene, pollution studies, occupational safety and health, nutrition and health sciences in general. Some of the major environmental sources of health effects are air pollution, water pollution, soil contamination, noise pollution and over-illumination. A non-stochastic or deterministic health effect has a severity that is dependent on dose and is believed to have a threshold level for which no effect is seen. Stochastic health effects occur by cha ...

Effects of Agent Orange on the Vietnamese people

Agent Orange is a chemical weapon most notably used by the U.S. Military during the Vietnam War, classified as defoliant. Its primary purpose was strategic deforestation, destroying the forest cover and food resources necessary for the implementation and sustainability of the North Vietnamese style of guerilla warfare. The U.S. Agent Orange usage reached an apex during Operation Ranch Hand, in which the material was sprayed over 4.5 million acres of land in Vietnam from 1961 to 1971. The use of Agent Orange as a chemical weapon has left tangible, long-term impacts upon the Vietnamese peopl ...

Health impact of asbestos

All types of asbestos fibers are known to cause serious health hazards in humans. Amosite and crocidolite are considered the most hazardous asbestos fiber types; however, chrysotile asbestos has also produced tumors in animals and is a recognized cause of asbestosis and malignant mesothelioma in humans, and mesothelioma has been observed in people who were occupationally exposed to chrysotile, family members of the occupationally exposed, and residents who lived close to asbestos factories and mines. During the 1980s and again in the 1990s it was suggested at times that the process of maki ...

Built environment

In the engineering and social sciences, the term built environment, or built world, refers to the human-made environment that provides the setting for human activity, ranging in scale from buildings to cities and beyond. It has been defined as "the human-made space in which people live, work and recreate on a day-to-day basis." The built environment encompasses places and spaces created or modified by people to serve their needs of accommodation, organisation and representation. The sciences of the built environment cover architecture, urbanism, building technology, civil engineering, land ...

Health effects of coal ash

Coal ash, also known as coal combustion residuals, is the mineral residue that remains from burning coal. In this article, is examined the possibility that exposure to coal ash and to the toxic substances it contains poses a health risk to workers in coal-fired power plants and residents living near coal ash disposal sites.

Effects of flooding on skin

There are several different types of skin conditions that may result from flooding. In a flood emergency, many residents are forced to wade through flood waters to escape, rescuers are exposed to flood waters in the effort to help, and citizens choose to walk in water for recreation. These waters contain pathogens and chemicals which are thus exposed to individuals that come into contact with the waters. Some of the potential contaminants in the flood water include raw sewage, oil, gasoline, and household chemicals such as paints sometimes lead based and insecticides. A major concern is la ...

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