Environmental hypothesis: is poor dietary selenium intake an underlying factor for arsenicosis and cancer in Bangladesh and West Bengal, India?

Spallholz, Julian E.; Boylan, L. Mallory; Rhaman, Mofizur

doi:10.1016/j.scitotenv.2003.09.034

Cited by 135 publications

(90 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Tualatin River in Oregon, USA; Boeder and Chang 2008) and arsenic (e.g. India and Bangladesh; Spallholz et al 2004), that endanger human and ecosystem health.…”

Section: Natural Factors Affecting Water Quality In Ruralmentioning

confidence: 99%

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

Khatri¹,

Tyagi²

2014

Frontiers in Life Science

795

283

View full text Add to dashboard Cite

Although water constitutes 71% of the earth's surface, only 0.3% of it is available as fresh water for human use. Moreover, the quality of fresh water in ground and surface systems is of great concern, as potable water needs to have appropriate mineral content. Ground and surface water quality in rural and urban environments is affected by both natural processes and anthropogenic influences. Because of this, water is becoming scarcer as the population increases across the world. Natural processes leading to changes in water quality include weathering of rocks, evapotranspiration, depositions due to wind, leaching from soil, run-off due to hydrological factors, and biological processes in the aquatic environment. These natural processes cause changes in the pH and alkalinity of the water, and also phosphorus loading, increase in fluoride content and high concentrations of sulphates. Anthropogenic factors affecting water quality include impacts due to agriculture, use of fertilizers, manures and pesticides, animal husbandry activities, inefficient irrigation practices, deforestation of woods, aquaculture, pollution due to industrial effluents and domestic sewage, mining, and recreational activities. These anthropogenic influences cause elevated concentrations of heavy metals, mercury, coliforms and nutrient loads. This paper studies the effects of natural processes and human influences in rural and urban aquatic systems. Pollution due to environmental parameters such as heavy metal pollution, heavy metals and bacterial and pathogenic contamination of both urban and rural areas is discussed in detail.

show abstract

“…Tualatin River in Oregon, USA; Boeder and Chang 2008) and arsenic (e.g. India and Bangladesh; Spallholz et al 2004), that endanger human and ecosystem health.…”

Section: Natural Factors Affecting Water Quality In Ruralmentioning

confidence: 99%

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

Khatri¹,

Tyagi²

2014

Frontiers in Life Science

795

283

View full text Add to dashboard Cite

show abstract

“…Studies have shown beneficial effects for health, and it is implicated in the protection of body tissues against oxidative stress, maintenance of defences against infection, and modulation of growth and development as well as its possible anti-carcinogenic properties (Fishbein 1986;Hocman 1988;Schrauzer 1992Schrauzer , 2000Ganther 1999;Combs et al 2001;Spallholz et al 2004;Rayman 2005;Zeng et al 2005). Among the literature on selenium's beneficial effects, a review by Spallholz et al (2004) suggests that low selenium dietary intakes may be a contributory factor for arsenicosis and cancer in Bangladesh as well as in West Bengal in India. A relationship between low-level selenium status and the prevalence of cancer and heart disease has also been suggested by a number of different studies (Brawley et al 2001;Wojtczak 2003;Klein & Thompson 2004), although this remains controversial (Moyad 2002;Allen et al 2004).…”

Section: Selenium and Healthmentioning

confidence: 99%

Too much or too little? A review of the conundrum of selenium

Gore

Fawell

Bartram

2009

Journal of Water and Health

View full text Add to dashboard Cite

Chemical elements such as selenium, fluoride, iron, calcium and magnesium are essential to the human being, although some are toxic when absorbed in high doses. In this paper, the risks associated with insufficient and excessive intake of selenium in the diet are reviewed, focusing on drinking water. Two different approaches are used to derive recommended nutrient intakes (RNI) for adequate nutritional status and guideline values to prevent excessive exposure. The former is based on the daily intake which meets the nutrient requirements of 97.5% of the population. The latter is a value derivation based on an assumed daily per capita consumption at the individual level, a conservative approach used where there is any uncertainty and is related to a negligible risk to health at population level across life stages. There is an increasing need to develop a conceptual framework bringing together aspects of toxicity and essentiality especially for elements apparently exhibiting narrow or overlapping ranges between essentiality and toxicity and to provide guidance on the nature and severity of risks in order to better protect human.While there are a number of frameworks available, these generally only consider food. There is a need to include water, which can be a significant source in some circumstances.

show abstract

“…A recent study suggested that Se concentration of 60 µg/day for women and 60 µg/day for men are necessary for adequate intake [57]. Se deficiency in Bangladeshis has also been reported [95]. In a later report, these authors suggested that Bangladeshi foods are likely to have low concentration of Se due to low Se concentration in Bangladeshi soils [94].…”

Section: Introductionmentioning

confidence: 99%

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

Al-Rmalli

Jenkins

Haris

2017

BSI

View full text Add to dashboard Cite

Abstract. Millions of people in Bangladesh are exposed to high concentration of the toxic element arsenic (As) through drinking water and consumption of foods. It has also been reported that Bangladeshis have a low intake of the essential element selenium (Se), which is known to be important as an antioxidant and has been suggested to counteract the toxicity of As. We report here on total intake of As and Se in a Bangladeshi population, based on inductively coupled plasma mass spectrometric (ICP-MS) analysis of a range of Bangladeshi foods. The total daily intake of As and Se from foods was estimated to be 74.2 and 87.7 µg/day, respectively. If As from water, used for drinking and cooking rice, is included the TDI increases to 385 µg of total As per day. An important finding of our study, contrary to suggestions given in other reports, is that the Bangladeshi diet does not appear to be deficient in Se and this may explain why the blood Se concentrations in Bangladeshis is similar to the USA population. This requires further investigation and detailed dietary and human biomonitoring studies on the Bangladeshi population should be conducted. Rice and fish were the main sources of dietary As and Se for Bangladeshis. Leafy vegetables could also be a significant contributor of high concentration of As in the Bangladeshi diet. The flesh and eggs of Hilsha (Tenualosa ilisha) species of fish were found to contain particularly high levels of total arsenic (range 0.77-6.15 mg/kg) although this is likely to be dominated by the non-toxic organoarsenic species.

show abstract

Environmental hypothesis: is poor dietary selenium intake an underlying factor for arsenicosis and cancer in Bangladesh and West Bengal, India?

Cited by 135 publications

References 53 publications

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

Influences of natural and anthropogenic factors on surface and groundwater quality in rural and urban areas

Too much or too little? A review of the conundrum of selenium

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

Contact Info

Product

Resources

About