Selenium and mercury in the Brazilian Amazon: opposing influences on age-related cataracts
2011

Selenium and Mercury's Impact on Cataracts in the Amazon

publication

Author Information

Author(s): Minoia Claudio, Ronchi Anna, Pigatto Paolo D., Guzzi Gianpaolo

Primary Institution: Laboratory of Environmental and Toxicology Testing, “S. Maugeri” IRCCS, Pavia, Italy

Hypothesis

Is there a correlation between selenium and mercury levels and the occurrence of age-related cataracts?

Conclusion

The study suggests a correlation between age-related cataracts and mercury and selenium levels, but also highlights potential adverse effects of high selenium concentrations.

Supporting Evidence

  • High selenium levels can lead to adverse health effects like hair loss and diabetes.
  • Selenium may help reduce mercury toxicity in some cases.
  • There is evidence of a synergistic effect between selenium and mercury.

Takeaway

This study looks at how selenium and mercury might affect eye health in older people living in the Amazon. It found that too much selenium could be harmful, even if it seems to help with mercury's bad effects.

Limitations

The study did not address the potential adverse health effects of high selenium levels adequately.

Participant Demographics

Adults in the Brazilian Amazon.

Digital Object Identifier (DOI)

10.1289/ehp.1003242

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