Selenium Geochemistry and Health

  title={Selenium Geochemistry and Health},
  author={Fiona M. Fordyce},
  • F. Fordyce
  • Published in Ambio 1 February 2007
  • Environmental Science
Selenium (Se) is a naturally occurring metalloid element, which is essential to human and other animal health in trace amounts but is harmful in excess. Of all the elements, Se has one of the narrowest ranges between dietary deficiency ( 400 µg day-1) (1) making it necessary to carefully control intakes by humans and other animals hence the importance of understanding the relationships between environmental exposure and health. Geology exerts a fundamental control on the concentrations of Se in… 
Determinants of Native Selenium Mobility and Bioavailability
Selenium as an element occurs on the earths crust as metalloid element on average 0.09 μg/g, in association with sulfide as metal selenide [1]. Selenium is thought to exist in many soils in inorganic
Microbial selenium transformations in seleniferous soils
Selenium (Se) is an essential trace element for animals and displays a narrow range between dietary deficiency and toxicity. The toxicity of Se depends on its bioavailability, which is directly
Selenium biofortification for human and animal nutrition
Although the essential role of Se for the growth and survival of plants has not been confirmed yet, it is a beneficial element for plants, which can enhance resistance to stress, and the Se content in the human diet is recommended.
Selenium Cycling Across Soil-Plant-Atmosphere Interfaces: A Critical Review
An overview of current knowledge on Se cycling with a specific focus on soil-plant-atmosphere interfaces is given and sources, speciation and mobility of Se in soils and plants will be discussed as well as Se hyperaccumulation by plants, biofortification and biomethylation.
Biogeochemistry of selenium. A review
Selenium levels and speciation in environmental compartments and the dynamics of global Se cycling continue to be a subject of intense interest largely because Se is both an essential element and a
  • M. Kieliszek
  • Biology
    Advances in food and nutrition research
  • 2021
Liming and selenium application impact on plant available selenium in selected soils of Malawi
Selenium (Se) is an essential micronutrient for humans and other animals. Its deficiency in food can cause cancer, cardiovascular and other diseases in humans. In high concentrations, Se is toxic for


Soil, grain and water chemistry and human selenium imbalances in Enshi district, Hubei Province, China
China possesses one of the best epidemiological databases in the world on Se-related diseases which has been used in conjunction with geochemical data to demonstrate a significant geochemical control on human Se exposure and the precise geographical areas at risk and the geochemical controls on selenium availability have yet to be established.
Selenium in plant and animal nutrition
It is imperative that scientists and policy makers recognize the deficiency, adequacy, and toxicity effects of Se on animal health, and information is presented about these aspects of Se in the plant and animal system.
Selenium in agriculture and the environment
Symposium 2 Newer aspects of micronutrients in at risk groups
The purpose of the present short review is to describe some of these newly identified selenoproteins and how they may function in conferring the nutritional essentiality of Se.
The epidemiology of selenium and human cancer.
The relation between the trace element selenium and the etiology of cancer in humans remains elusive and intriguing, despite the number of epidemiologic studies published on the topic. We address
Studies on human dietary requirements and safe range of dietary intakes of selenium in China and their application in the prevention of related endemic diseases.
600 and 400 micrograms/d were suggested as the individual daily maximum safe selenium intake and the safe dietary selenum intake, respectively, in the prevention of Se-related endemic KD and Kashin-Beck disease.
Trace Elements in Human and Animal Nutrition
This book discusses the history of zinc, its application in agriculture, and its applications in the management of soil-Plant-Animal relations.
Endemic selenium intoxication of humans in China.
An endemic disease was discovered in 1961 in parts of the population of Enshi County, Hubei Province of the People's Republic of China and the morbidity was almost 50% in the 248 inhabitants of the five most heavily affected villages; its cause was determined to be selenium intoxication.