Mercury Exposure and Health Effects in Indigenous People from

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

• of total mercurypeople, two (13.3%)
• (MeHg). one (6.7%)
• the values three (20%)inon a Yanomami
• individually (Table 1) (3,5,7,13,25).
• The Munduruku ethnic group NIhas been the 25% > 10 µg/g
• Santos E. C. O. (Rondônia) Table 1. Non-occupational
• 25% > 10 µg/g 26% NIGSTM1 null
• Vega C. M. et al., (Rondônia) 92.3%
• (Pará) Munduruku MeHg: 7.4 70% MeHg ≥ 6
• NI NI NI NI 2.9 28%NI Associated
• Klautau- 15 mothers NI NI 62% retardation and
• Perini J. A. et al., (Pará) 7.0 ± 4.5 49% (2/102 children).
• 36.8% (total)
• the study design and data type, thereby enhancing the credibility of the results (Table 2).
• Table 2. The risk-of-bias assessment of the studies included in the article was conducted based on the
• was approximately 68%. In general, exposure to mercury decreased among women of
• issue, as 22% of the woman continued showing high mercury levels > 10 µg/g in 2012.
• investigated, whose children showed median values of 6.55 µg/g of TotalHg, ranging from
• 2.0 to 20.4 µg/g, and among mothers, a median concentration of 8.30 µg/g was found,
• concentration in the general population was 8.37 µg/g and ranged from 0.52 to 83.89 µg/g.
• (92.3%) of the tribe’s general population had levels above reference values (15). However,
• than 50% of exposed individuals, but with mean and median levels of TotalHg higher than
• Table 3. Acute and chronic symptoms of mercury exposure in adults and children and fetal risks.
• They also found that 62.2% of the Kayabi sample population had an average mercury
• the subjects evaluated, TotalHg concentrations ranged from 0.16 to 10.20 µg/g, with an
• average of 3.3 µg/g; 79.4% had levels above 2 µg/g, and there was no significant difference
• median MeHg level was 7.115 µg/g, and the highest concentrations were recorded in the
• ductive age (8), especially in riverside and rural communities, whose levels ranged from
• BMI, and blood pressure. TotalHg levels in the three MK villages ranged from 2.5 ± 1.4
• assessed, TotalHg concentrations ranged from 1.4 to 23.9 µg/g, exhibiting a significant
• assessed. The median concentration of TotalHg was 7.4 (2.0–22.8 µg/g). From these,
• 30.3% some peripheral neuropathy, and 34.8% reduced cognitive performance, which is
• all communities, especially the Ianomami. TotalHg concentrations ranged from 0.8 µg/g

Methods (brief)

• Accepted: 23 October 2024 tions in hair samples in indigenous people from the Brazilian Amazon. Results: Using total
• Published: 22 July 2025 mercury (TotalHg) values in hair samples, we analyzed exposure levels, prevalence, and
• Citation: da Conceição Nascimento toxic effects. We found 15 epidemiological studies with a cross-sectional design and sample
• strated mercury levels in hair samples above the reference limit of 6 µg/g established by the
• the measurement of total mercury (TotalHg) in hair samples, which is a biomarker indicative
• (MeHg) in hair samples. The studies considered prevalence, exposure levels, and effects
• studies, some did not show mercury concentrations in hair samples (6) (Figure 1).
• ologies, including differences in sample size and selection methods, we cannot guarantee
• tradition, these sample size
• through the values measured in hair samples and the prevalence and effects of this exposure
• hair samples and tribe.
• representative samples but without High
• (2002) (27) sample; unclear confounding
• sample limited focus multivariate
• Clear criteria Small sample No explicit Pearson
• Limited sample No Appropriate
• Achatz et al. for the samples; health
• (1998) (26) small sample variance testing

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

• Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
• Mercury
• Mercury
• Lead

Verification notes

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Update history

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