Why LINKS(Lead Information N Knowledge Sharing)

Lead is a major health hazard at many jobs. Lead can cause serious health problems. You can carry lead dust home with you and harm your household members. Children and fetuses are particularly more vulnerable to the effect of lead. The important sources of lead are automobile exhaust, and industrial process such as smelting of lead, recycling of lead batteries, manufacturing of lead based paints etc. Exposure to lead can occur through drinking water and food contaminated with lead. The population of developing nations like India is particularly more susceptible to lead poisoning because of the problem of malnutrition. Iron deficiency anemia, a common nutritional problem in Indian women (particularly during pregnancy) and children, can lead to greater absorption and therefore greater toxic effect at the same level of lead exposure. A good news is that lead poisoning is preventable!!!

How you can be a part of LINKS ?

By attending a day workshop on lead and lead related information. For futher details please email us at - nrclpi@gmail.com

Lead and IQ

Scientists think that even small amounts of lead in the body can lower intelligence, promote anti-social behavior, contribute to attention-deficits, and cause progressive mental decline. Scientists have also studied what happens to physical parts of the brain when lead is introduced.

Lead is a neurotoxin. Although it often does not produce any physical symptoms, it can interfere with the development of child's brain. In starker term, lead is a killer of intelligence. The most critical effect of lead toxicity occur among children exposed during fetal devlopment, post natal devlopment, or both. Result of studies by McMichael et al (1988) and Bellinger et al (1991) have shown that lead's adverse effect on the fetus and child occur at blood lead level previously thought to be safe. Developing brains are also more susceptible to the toxic effect of lead. Children need to learn vast quantities in the early years. When lead lower their Iqs, they have lost an important opportunity to learn.

Since Byers and lord study (1943), it has been widely recognized that children who recover from clinical lead intoxication are at higher risk for attention defects and poo classroom functioning, and have greater need for psychological services. Recent evaluation of 24 major cross sectional studies by Needleman and Gatsonis (1990) provide strong support for the hypothesis that children's IQ Scores are inversly related to lead burden. Weighing by the the inverse of the variance of earth estimate, we estimate that each 1 µg/dL change in the blood lead level result in a 0.25 point change in IQ.

Report show no evidence of threshold, reaction time under longer intervals of delay, which is a measures of attention, was prolonged in children with high lead levels.

In Children Encephalopathic symptoms and death occur at blood lead concentration of 80 - 100 µg/dL.

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