Children's trace element lead exceeds the standard

When it comes to the issue of trace elements, many people are very concerned about it. There are always different understandings of some changes in the body. Regarding the trace elements of children, if the lead level exceeds the standard, it still depends on the individual's physical development. The more common reason is that they may not pay attention to their diet, or because they have recently eaten some fried foods, or snacks such as popcorn, which may cause excessive lead levels over time.

What is lead excess

Excessive lead exposure can have serious impacts on children's health, especially their physical and intellectual aspects.

Children's lead content exceeds the standard, that is, the lead content in the child's body exceeds the maximum limit of lead intake for children. Lead, a chemical element, is seriously harmful to the human body. Excessive intake of lead and its compounds can cause palpitations, irritability, damage to the nervous system, and even cause cancer and teratogenesis. Excessive lead content will have a very negative impact on children and should be taken seriously by parents.

The latest research in the United States confirms that children with blood lead levels exceeding 25 micrograms per liter are at risk of developing dental caries and abnormal learning behavior. Experts at home and abroad have recognized that if children's blood lead levels exceed 50 micrograms/liter, it will affect the children's intellectual development and cause problems with reading, calculation, memory and attention.

The World Congress of Pediatrics unanimously passed that as long as a child's blood lead level exceeds 100 micrograms/liter, regardless of whether there are clinical symptoms and other biochemical changes, the child will be diagnosed with lead poisoning, and blood lead levels exceeding 200 micrograms/liter will be classified as moderate lead poisoning. my country's Ministry of Health calls children's blood lead levels over 100 micrograms/liter hyperleademia, and over 200 micrograms/liter mild lead poisoning. Occupational doctors believe that clinical intervention should only be considered when blood lead levels exceed 450.

Symptoms of excessive lead

If children have excessive lead levels, problems will occur in all systems of the body, and may even be life-threatening. Common symptoms include:

1. Nervous system: irritability, hyperactivity, short attention span, aggressive behavior, slow reaction, drowsiness, movement disorders. Severe cases may include mania, delirium (a temporary neurological disorder characterized by confusion, bewilderment, incoherent speech, restlessness, agitation, and often delusions or hallucinations), visual impairment, and cranial nerve paralysis. When the blood lead level is around 1000 ug/L (4.826umol/L), symptoms of lead encephalopathy such as headache, vomiting, convulsions, coma, and even death may occur.

2. Digestive system: abdominal pain, constipation, diarrhea, nausea, vomiting, etc.

3. Blood system: microcytic hypochromic anemia, etc.

4. Cardiovascular system: hypertension and arrhythmia.

5. Urinary system: aminoaciduria, glucosuria, and hyperphosphaturia in the early stage; in the late stage, patients may experience symptoms of renal failure such as azotemia.

Subclinical lead poisoning mainly affects children's intellectual behavioral development and physical growth. Due to the lack of clinical manifestations sufficient to attract the attention of parents and pediatricians, it is often easily ignored. By the time it is discovered, the toxic effects of lead are difficult to reverse. Its hidden and progressive pathological characteristics make it more harmful to children's health. Therefore, it is the focus of research on childhood lead poisoning.