Timeline of human awareness of mercury poisoning
1800 - "mad as a
hatter" emerged referring to effects of chronic mercury exposure. The hat industry used mercury metal in manufacturing.
1889 – Charcot associated
rapid oscillatory tremors to mercury
exposure.
1940- Wilson published his
classic textbook of neurology agreeing with Charcot’s statement on tremors. He
also described mercury-induced cognitive
impairments, such as inattention, excitement, and hallucinosis.
1961- In Japan researchers
attributed elevated urinary mercury levels with Minamata
disease.
Minamata disease is an example of organic toxicity. Local
villagers ate the fish after a factory disposed inorganic mercury into the
water. Local people began to exhibit signs of neurologic damage, such as visual
loss, extremity numbness, hearing loss, and ataxia. Fetus’s exposed to the
methylmercury were the most severely affected. Furthermore, because mercury was
also discovered in the breast milk of the mothers, the babies' exposure
continued after birth.
2013- The Minamata Convention
on Mercury was agreed upon at the fifth session of the Intergovernmental
Negotiating Committee in Geneva, Switzerland. It is a global
treaty to protect human health and the environment from the adverse
effects of mercury. The major highlights of the convention included a ban on
new mercury mines, the phase-out of existing ones, control measures on air
emissions, and the international regulation of the informal sector for
artisanal and small-scale gold mining.
Today- Mercury continues to exist in many of our daily objects.
Including in batteries, thermometers, light bulbs, and barometer manufacturing.
Some products used in the agriculture industry contain mercury. Some dental
amalgams that contain mercury are still used today. Moreover, some cosmetic
products contain mercury, such as skin lightening.
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