Iodine environmental availability and human intake in oceanic islands: Azores as a case-study

Linhares, Diana; Garcia, Patrícia; Almada, Alexandra; Ferreira, Teresa; Queiroz, G.; Cruz, J. Virgílio; Rodrigues, Armindo

doi:10.1016/j.scitotenv.2015.08.109

Cited by 7 publications

(8 citation statements)

References 36 publications

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“…The availability of iodine in nature differs by geographical area and deficiency is more associated with mountainous regions such as the Himalayas and Alps and areas with frequent flooding. In addition, other regions also have a scarcity of this mineral, such as Central Africa, Central Asia, Europe and in places where the soils are poor (6).…”

Section: Introductionmentioning

confidence: 99%

Insufficient iodine intake in pregnant women in different regions of the world: a systematic review

Candido¹,

Morais²,

Dutra³

et al. 2019

Archives of Endocrinology and Metabolism

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Objective:To determine the prevalence of insufficient iodine intake in pregnant women. Materials and methods: The search was performed in the electronic databases Medline (PubMed), Latin American and Caribbean Literature in Health Sciences (Lilacs) and Scopus. Review studies, experimental studies, those with adolescent pregnant women (< 20 years) and iodine supplementation were excluded. The selection followed the steps of identifying the articles in the databases, deleting the duplicates, and reading the titles, abstracts, and then the entire article. The search for the articles occurred in September 2017, using the descriptors "pregnant" and "iodine deficiency" NOT "supplementation" in English, Portuguese and Spanish. Results: Thirteen articles were included, the deficiency prevalence ranged from 16.1% to 84.0%, and the median of iodine intake was insufficient in 75% of the studies. There is no classification for mild, moderate or severe levels of iodine deficiency in pregnant women, which makes it impossible to know the real dimension of the problem. Conclusion: The high prevalence of insufficient iodine intake in pregnant women, observed worldwide, shows the need for a population classification in order to direct public policies.

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Section: Introductionmentioning

confidence: 99%

Insufficient iodine intake in pregnant women in different regions of the world: a systematic review

Candido¹,

Morais²,

Dutra³

et al. 2019

Archives of Endocrinology and Metabolism

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“…The problem was first recognized in Japan and was called "Aso volcano disease" [50], but during the course of the year, high fluoride concentrations (greater than the WHO guideline value of 1.5 mg/l) were also found in Africa, where the crater lakes of western Uganda often have high F concentrations (e.g.4.5 mg/l F in Lake Kikorongo) [51]. High concentrations of F were also found in eastern Turkey, near the Tendurek Volcano, where the natural waters contained fluoride levels between 2.5 and 12.5 ppm [52], and in oceanic islands, such as Tenerife Island (Canary-Spain) [53] and São Miguel Island (Azores-Portugal) [54][55][56].…”

Section: Human Health Effectsmentioning

confidence: 99%

“…Although these studies gather some information regarding the TE profile in the island volcanic soils, they were limited to areas of island without active volcanism and, therefore, TE contents may be even higher in the soils from where active manifestations of volcanism occur. Lately, there have been some studies that focused on the distribution of several TEs in all the volcanic complexes of São Miguel Island, evidencing a depletion of some TEs in the soils, such as iodine [55] and cobalt [78] and elevated concentrations of others, such as manganese [78].…”

Section: Distribution Of Tes In São Miguel Island Soilsmentioning

confidence: 99%

“…Since it is recognized that the ocean is the main reservoir of iodine and that the Azorean islands have geographical and climatic features that are clearly oceanic, Linhares et al [55] investigated the environmental availability of iodine and bioavailability to human populations, especially in children at school age. This study reinforced the observations obtained in the previous studies [84,86], revealing a deficient intake of iodine in the resident population of São Miguel Island, but it went further in the establishment of the causes.…”

Section: Iodinementioning

confidence: 99%

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Trace Elements in Volcanic Environments and Human Health Effects

Linhares¹,

Garcia²,

Rodrigues³

2021

Trace Metals in the Environment - New Approaches and Recent Advances

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Trace elements play an essential role in the normal metabolism and physiological functions of living beings. The distribution and concentration of trace elements in the environment results from both anthropogenic and natural origins; this chapter will focus on volcanism as one of the major natural sources of trace elements. In volcanic areas, the emissions and deposits of volcanogenic elements are key factors for geochemical mobility of trace elements and their distribution in the environment and, their effects on animals and human health. Volcanic areas have been associated with increased incidence of several diseases, such as fluorosis or even some types of cancer, leveraging the studies on the potential of this natural phenomenon as a promoter of diseases. As the Azores Archipelago is a volcanic area, with several manifestations of active volcanism, this region presents itself as an ideal study scenario for a multidisciplinary approach on environmental health problems, such as the exposure to toxic and/or deficient levels of trace elements. This chapter will present an integrated approach, describing the occurrence, the monitoring of trace elements and their characterization, the biological role in human body, and the human biomonitoring and health risk assessment, using case studies as examples.

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“…Iodine deficiency occurs in the soil when the return of the iodine to the soil is slow and in small amount compared to the original loss of iodine. Hence, all crops grown in this soil will be iodine deficient [12]. Low levels of iodine in the diet for people who do not get enough iodine from their food may lead to health problems collectively referred to as iodine deficiency disorders (IDD) [14].…”

Section: Iodine Deficiency Disorders (Idd) and Symptoms 21 Causes Ofmentioning

confidence: 99%

Urinary Iodine: Biomarker for Population Iodine Nutrition

Hussain¹,

Selamat²,

Kuay³

et al. 2020

Biochemical Testing - Clinical Correlation and Diagnosis

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Many reports or manuals had focused on the implementation of iodine deficiency disorder (IDD) elimination programme from the point of view of the programme managers. In this chapter, we will focus on the importance of urinary iodine testing, its related diagnosis and further biomarker testing suggested for further diagnosis related to thyroid health. This chapter will be relevant for the respondents to the monitoring programme, particularly the 8-10-year-old schoolchildren and pregnant women, i.e., the vulnerable targeted groups from either the iodine-deficient areas or the Universal Salt Iodization (USI) gazetted areas. USI has been proposed by the World Health Organization (WHO) as the most cost-effective programme to eliminate IDD, and it is also a way to increase the intelligent quotient (IQ) of the world population for the future. This chapter had been laid out so that the readers will know briefly the rationale behind the testing of urinary iodine among schoolchildren and pregnant women under the implementation of the USI programmes in their countries and their benefits, especially the utilisation of urinary iodine as the biomarker to portray the population iodine status. Diagnosis including iodine-induced thyroid diseases and further biomarkers measurement besides urinary iodine is also discussed briefly.

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Iodine environmental availability and human intake in oceanic islands: Azores as a case-study

Cited by 7 publications

References 36 publications

Insufficient iodine intake in pregnant women in different regions of the world: a systematic review

Insufficient iodine intake in pregnant women in different regions of the world: a systematic review

Trace Elements in Volcanic Environments and Human Health Effects

Urinary Iodine: Biomarker for Population Iodine Nutrition

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