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An X-ray demostrating the characteristic finding of lead poisoning in a humans-dense metaphyseal lines.

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Lead Poisoning: Why It’s Happening Now | HowStuffWorks NOW

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1/27/2016: Two U.S. towns have found dangerous levels of lead in their water supply. We dig into why this is happening, what exactly lead poisoning is and what some solutions might be.

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Lead poisoning was among the first know and most widely studied work and envioronmental hazards. One of the first metals to be smelted and used,lead is thought to have been discovered and first mined in Anatolia around 6500 BCE. Its density,workability,and corrosion resistance were among the metal's attractions.

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Outcome is related to the extent and duration of lead exposure. Effects of lead on the physiology of the kidneys and blood are generally reversible;its effects on the central nervous system are not. While peripheral effects in adults often go away whwn lead exposure ceases,evidence suggest that most of lead's effects on a child's central nervous system are irreversible. Childre with lead poisoning may thus have adverse health,cognitive,and behavioral effects that follow them into adulthood.

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In most cases,lead poisoning is preventable by avoiding exposure to lead. Prevention strategies can be divided into individual,preventive medicine,and public health

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Diagnosis includes determining the clinical signs and the medical history,with inquiry into posible routes of exposure. Clinical toxicologists,medical specialists in the área of poisoning ,may be involved in diagnosis and treatment. The main tool in diagnosing and assessing the severity of lead poisoning is laboratory analysis of the blood lead level (BLL).

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Lead may be found in food when food is grown in soil that is high in lead,airborne lead contaminates the crops,animals eat lead in their diet,or lead enters the food either from what it was atored or cooked in.

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Symptoms may be different in adults and children;the main symptoms in adults are headache,abdominal pain,memory loss,kidney failure,male reproductive problems,and weakness,pain,or tingling in the extremities.

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In 2013 lead is believed to have resulted in 853.000 deaths. It occurs most commonly in the developing world. Those who are por are at greater risk. Lead is believed to result in 0.6% of the world's disease burden. People have been mining and using lead for thousand of years. Descriptions of lead poisoning date to at least 2000 BC,while efforts to limit lead's use date back to at least the 1500s. Concerns for low levels of exposure begin in the 1970s with there being no safe threshold for lead exposure.

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Exposure to lead can occur by contaminated air,water,dust,food,or consumer products. Children are at greater sick as they  are more likely to put objects in their mouth such as those that contain lead Paint and absorb a greater proportion of the lead that they eat. Exposure at work is a common cause of lead poisoning in adults with certain occupations at particular risk. Diagnosis is tipically by measurement of the blood bad level. The Center for Disease Control (US) has set the upper limit for blood lead for adults at 10 ug/dl and for children at 5 ug/dl. Elevated lead may also be detected by changes in red blood cells or dense lines in the bones of children as seen on X-ray.

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Lead poisoning is a type of metal poisoning caused by lead in the body .The brain is the most sensitive .. It causes almost 10% of intelectual disability of otherwise unknow cause and can result in behavioral problems.Some of the effects are permanent. In serve cases anemia,seizures,coma,or death may occur.