Pregnant Women Fear Bearing Children Due to Mercury Contamination
Deep in the Amazon, indigenous women express fear about becoming pregnant due to mercury contamination from illegal gold mining.
Rivers that have sustained their communities now carry mercury from illegal gold mining, threatening the health of their unborn children. Alessandra Korap, leader of the Munduruku people, states, “Breast milk is no longer reliable.”
Rany Ketlen’s Family Struggles with Unexplained Neurological Issues
In Sai Cinza, a Munduruku community surrounded by illegal mines, Rany Ketlen’s three-year-old family grapples with understanding why she has never been able to lift her head and suffers muscle spasms.
Rany is among at least 36 people in the area, mostly children, with unexplained neurological conditions according to preliminary data from a pioneering study on mercury contamination’s impact.
Consume Contaminated Fish or Go Hungry
Rany’s father, Rosielton Saw, has been working as a miner near their village for years, following in his father’s footsteps, Rosenildo.
Rosenildo acknowledges the danger of the mercury used, but explains that extracting 30 grams of gold per week is just enough to sustain them. The family regularly consumes surubim, a carnivorous fish that accumulates mercury in the river ecosystem.
In recent years, health authorities have reported numerous patients in the region suffering from similar conditions. However, lack of testing and limited access to healthcare have hindered a comprehensive understanding of the problem or identification of exact causes.
Mercury’s Lasting Impact, Even if Mining Ceases
Downstream from Sai Cinza, diplomats and world leaders will convene next month in the Amazon for the UN Climate Change Conference (COP30), dubbed the “COP of the Forests,” focusing global attention on threats to tropical rainforests and their inhabitants, including illegal mining across the region.
Despite President Luiz Inácio Lula da Silva expelling thousands of miners from indigenous lands since returning to power in 2023, the remaining mercury persists, circulating through air, water, and soil, perpetuating a prolonged health crisis.
The Brazilian government has intensified mercury level monitoring in the Munduruku indigenous territory, trained public health officials to identify early signs of mercury poisoning, and invested in potable water sources for remote communities, according to a statement from the Ministry of Health.
However, Paulo Basta, a researcher from the public health institute Fiocruz, states that even if gold mining in the Amazon ceased entirely, mercury deposits would remain for many more decades.
Establishing Causality is Challenging
The ongoing study aims to provide the crucial link missing from the puzzle: proving that mercury causes disabilities. Researchers are tracking 176 pregnant women to analyze their children’s health during their first years of life.
In Sai Cinza, preliminary data from investigators shows that, on average, study mothers had mercury levels five times higher than those considered safe by the Brazilian Ministry of Health, while their babies had three times that level. Rany Ketlen’s one-year-old sister, Raylene, is among them, though she has yet to show any symptoms.
“This mercury disease, if not actively sought, goes unnoticed,” says Cleidiane Carvalho, a nurse who has long sought to connect researchers with affected indigenous children. Without these studies, she fears the crisis “will remain unaddressed forever.”
Proving a causal relationship with mercury contamination has been a significant challenge, as indigenous communities often lack basic healthcare services and are vulnerable to various infectious diseases, all potential causes of neurological issues. Close primate marriages, which can cause genetic disorders, are also more common in small indigenous communities.
While mercury is likely among the causes of the 36 patients’ conditions without a hereditary genetic disorder, other factors cannot be ruled out, according to Fernando Kok, a geneticist at the University of Sao Paulo working with Fiocruz’s study.
Tests detecting mercury in people’s bodies are like snapshots of a patient’s recent diet, unable to definitively prove past contamination as the cause of neurological problems.
Key Questions and Answers
- What is the issue? Mercury contamination from illegal gold mining in the Amazon is causing health concerns, particularly for pregnant women and their unborn children.
- Who is affected? Indigenous communities, such as the Munduruku and Yanomami people, are at high risk due to their reliance on contaminated river fish and proximity to mining activities.
- What are the symptoms? Neurological issues, including muscle spasms and developmental delays, have been reported in children affected by mercury contamination.
- Why is establishing causality difficult? Indigenous communities often lack basic healthcare services, making it challenging to isolate mercury contamination as the sole cause of neurological problems.
- What is being done? Researchers are conducting a long-term study to determine if mercury contamination causes the observed neurological conditions in affected communities.
