Minamata Disease Essay

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Minamata Disease Minamata disease also known as Chisso-Minamata is a neurological syndrome caused by severe mercury poisoning. Symptoms include ataxia, numbness in the hands and feet, muscle weakness, narrowing of vision and damage to hearing and speech and sometimes paralysis and insanity eventually leading to death. Minamata disease was first discovered in Minamata, Japan in 1956. The disease was caused by the very toxic substance Methyl Mercury being released into industrial waste water by the Chisso Corporation from 1932-1968. The deadly substance was then absorbed by sea creatures in the water such as shellfish and crustaceans which were then eaten by the people leading to them being poisoned with the substance therefore infecting them with the virus. The impact on the food chains was visible at first sight; before the people started to become infected many cats were yelling and throwing themselves off bridges that the people thought they were committing suicide. Also all the animals that ate fish in the area slowly started to die leaving lack of food to the animals above and so on leading great amounts of animals to die. The Effect of the disease on humans was very severe, first the people began to have numbness in their limbs and lips rand difficulty hearing and seeing. Others began to have shaking arms and legs and brain damage some were just shouting uncontrollably. The disease also infected the lady’s womb infecting a baby if present making the baby born with deformities such as deafness, blindness, gnarled limbs and mental problems. The effect on the environment was that animals and plant life that relied on the sea or creatures in the sea died in fast numbers. Plants such as seaweed which are a main part of the people and animals diet also died so even fish that were not intoxicated by the wastewater they would have later been by the
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