Exposed to Methylmercury

Overview

This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus. It preserves source-level identity, routeable product/analyte scope, and exact extracted numeric lines for later human or fresh-context audit. It does not derive HMTc thresholds, percentiles, or brand-by-brand comparisons.

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:

• C.B.; Basta, P.C. Clinical, Laboratory a high prevalence of anemia (25%), low vaccination coverage (15%), and low IQ (average 68.6). The
• and Neurodevelopmental Findings in Total Hair Mercury (Total Hg) levels ranged from 0.16 µg/g to 10.20 µg/g (mean: 3.30 µg/g; median:
• Children from the Yanomami-Ninam 3.70 µg/g). Of 117 children tested, 93 children (79.4%) had levels ≥ 2.0 µg/g (had no significant
• Intelligence Quotient (TIQ), the average value was 68.6, ranging from 42 to 92 points (median: 69.5;
• chi-square test. For all analyses, a significance level of 5% was considered. All statistical
• 3.0; maximum: 143.9 months). During the assessments, 47 children (39.2%) were under
• 5 years of age, and among them, 13 (10.8% of the total) were under 2 years old. Children
• sample, respectively. There was a slight predominance of boys (52.5%) over girls (47.5%),
• with no statistically significant differences between age groups (Table 1).
• Table 1. Sociodemographic and clinical characteristics of the study population of the Yanomami
• once, with a slightly higher proportion of hospitalizations among girls (35.1%) compared to
• boys (27.0%) (p-value: 0.337) (Table 1). Approximately one-third of caregivers (n = 36; 30%
• health booklet for verification (n = 84), it was observed that only 15.5% of the children were
• coverage was slightly higher among boys (19.0%) compared to girls (11.9%) (p-value: 0.365)
• between genders (p-value = 0.438, Table 1). However, it was noted that 93 children (79.4%)
• had a value exceeding 2.0 µg/g. The Hg levels ranged from 0.16 µg/g to 10.20 µg/g, with
• The average hemoglobin level among the tested children (n = 110) was 12.1 g/dL
• boys (25.4%) (p-value: 0.640) (Table 1). In the Lasasi, Caju, and Ilha villages, the highest
• prevalences were identified, with 38.2%, 33.3%, and 25.0% of the children having anemia,
• was 68.6, ranging from 42 to 92 points (median: 69.5; standard deviation: 10.5; 25th
• ranges employed by the Wechsler scale are as follows: 90–109, considered average; 80–89,
• in accordance with the test manual to categorize the sample (19). The TIQ mean of the
• evaluated children was 68.6 and the median was 69.5, indicating that the intellectual
• In this group, 55.2% of the evaluated children showed intelligence deficit; 34.5% were
• was 68.6, ranging from 42 to 92 points (median: 69.5; standard deviation: 10.5; 25th per-
• ranges employed by the Wechsler scale are as follows: 90–109, considered average; 80–89,
• in accordance with the test manual to categorize the sample (19). The TIQ mean of the
• evaluated children was 68.6 and the median was 69.5, indicating that the intellectual func-
• this group, 55.2% of the evaluated children showed intelligence deficit; 34.5% were con-
• the Lasasi village (51.3%),
• Lasasi village (51.3%), followed
• boys (p-value: 0.975) (Table 2). The majority of caregivers (63.3%) reported that
• girls and boys (p-value: 0.975) (Table 2). The majority of caregivers (63.3%) reported that their child
• in boys (p-value: 0.445) (Table 2). Regarding dietary habits, 88.3% of caregivers reported
• (84.2%) (p-value: 0.118) (Table 2). Finally, 90.8% of caregivers reported that their children
• The analysis of the nutritional status (Table 3) indicates that the median of the weight-
• 0.19); the median of the height-for-age indicator was −2.66 Z-scores (standard deviation:
• 1.0; minimum: −5.7; maximum: −1.10); and the median of the BMI (Body Mass Index)
• reveals that 43.8% of the children have deficits in weight-for-age, and 77.3% have deficits in
• were tested, and one was considered as best adjusted (Table 4). A negative association was
• Table 4. Results from the linear regression model between Total Intellectual Quotient and mercury
• Health Organization (WHO) at 2.0 µg/g (20). Notably, 93 children (79.4%) exceeded this

Methods (brief)

• need to collect and store venous blood samples. Children were considered anemic when
• Hair samples were collected to evaluate the mercury levels, in order to reflect the
• of contaminated fish. Briefly, samples were collected from the occipital region, stored in
• sample, respectively. There was a slight predominance of boys (52.5%) over girls (47.5%),
• 3 Total Hg dosed from hair samples, missing information from 3 children. 4 Total IQ obtained by the Snijders-
• in accordance with the test manual to categorize the sample (19). The TIQ mean of the
• in accordance with the test manual to categorize the sample (19). The TIQ mean of the
• analyzing mercury levels in hair samples.

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

Verification notes

• Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing wiki/sources/ pages before creation.
• Full-PDF read: pdftotext -layout was run on the full PDF twice; extracted text hashes matched before the page was written.
• Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
• Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
• HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.

Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.