■ Lead poisoning may be life-threatening.
Dr. Ren said that lead and its compounds have certain toxicity, which will cause harm to the nervous system, hematopoietic system, digestive system, kidney system, cardiovascular system and endocrine system. At present, the most common lead poisoning belongs to mild chronic lead poisoning. The main pathological changes are that lead affects the metal ions and enzyme system in the body, causing autonomic nerve dysfunction, anemia and low immunity.
Lead poisoning can affect many organs of human body, including nausea, vomiting, loss of appetite, abdominal distension, constipation, bloody stool, abdominal cramps, dizziness, restlessness, insomnia, lethargy, irritability, pallor, palpitation, shortness of breath, low back pain, edema, proteinuria, hematuria, renal tubular urine, and even severe renal failure. If pregnant women accidentally lead poisoning during pregnancy, it will also cause miscarriage, stillbirth or deformity.
■ Prevent lead poisoning in many ways.
Prevention of lead poisoning should start with diet and living habits. First of all, printed materials such as newspapers should not be used as food packaging in the diet. When food is packed in food bags, direct contact with food, especially acidic food, should be avoided. Wash vegetables and fruits before eating, and peel them as much as possible to prevent pesticide residues of lead.
In terms of living, try not to use lead-containing paint to decorate the walls, floors and furniture at home, otherwise once the paint crumbs peel off, the lead in the paint will easily cause lead pollution in the living room. Try to use lead-free cosmetics, hair dyes, etc. In addition, don't walk near roads with many cars, because automobile exhaust and soil around roads contain a lot of lead.
Diet should contain enough high-quality protein, such as eggs, lean meat, poultry, fish and shrimp, soybeans, bean products, etc., accounting for more than 1/2. Foods rich in vitamins, especially vitamin C, should be selected in dietary distribution. Appropriate vitamin C supplementation can not only make up for the consumption of vitamin C by lead, but also slow down the symptoms of lead poisoning. Vitamin C can also combine with lead in the intestine to form lead ascorbate with low solubility, which reduces the absorption of lead. At the same time, vitamin C also directly or indirectly participates in the detoxification process and promotes the discharge of lead. Appropriate vitamin E supplementation can resist the peroxide reaction caused by lead, while vitamin D supplementation can affect the absorption and deposition of lead by regulating calcium and phosphorus. Supplementing vitamins B 1, B2, B6, B 12 and folic acid can also improve symptoms and promote the recovery of physiological functions.
■ Eat some lead-free food properly.
Many natural foods have certain preventive and lead-discharging effects. Protein contained in milk can combine with lead to form insoluble matter, and calcium contained in milk can prevent the absorption of lead. Tannic acid in tea can form a soluble complex with lead, which is excreted with urine. Iodine and alginic acid in kelp can promote the discharge of lead. Sulfide in garlic and onion can dissolve the toxic effect of lead. Seabuckthorn and kiwifruit are rich in vitamin C, which can prevent the absorption of lead and reduce lead toxicity. Food contains some inorganic anions or acid radicals, such as iodine ions, phosphate ions and molybdate ions. , can combine with lead to promote its excretion from the stool. These nutrients are rich in fruits and vegetables, so people exposed to lead should eat more fruits and vegetables.
Lead: Occupational lead poisoning leads to infertility, mainly because it interferes with the normal formation of sperm. It damages epithelial cells of seminiferous tubules and reduces sperm motility. There are also extremely strong embryonic side effects. As long as one of the couples is exposed to lead, abortion and premature delivery may occur.
Residents living in cities with rapid industrial development and increasingly prosperous traffic. It is inevitable to inhale lead from the atmosphere every day. "Lead" is the protoplasm poison of cells, and the "lead" entering human body will cause serious harm to human health. Among them, children are sensitive to lead poisoning When people often inhale lead-containing air, they may have mild early symptoms of neurasthenia, such as headache, muscle and joint pain, general weakness, insomnia, loss of appetite and so on. When too much lead is accumulated in the human body, the above symptoms will be further aggravated, accompanied by clinical manifestations of lead poisoning. However, the clinical manifestations of "lead" poisoning are often similar to the symptoms of other diseases, such as: IQ decline caused by "lead" and mental retardation caused by neurodysplasia of brain cells, lead anemia and iron deficiency anemia; Numbness and weakness of hands, feet and limbs, poor neurotrophic and microcirculation, muscle weakness and numbness, "leading to" abdominal cramps and appendicitis abdominal pain; Lead "hypertension and arterial degeneration hypertension." Lead "leads to infertility and general infertility. Growth retardation caused by "lead" is similar to growth retardation caused by other reasons, which easily leads to misdiagnosis and mistreatment, and often leads to adverse consequences.
So, how can I know if I have lead poisoning? For adults or children living in lead-polluted environment, if one of the above symptoms appears, we should pay special attention to whether it is caused by the harm of lead. If you want to know whether you have lead poisoning, you can diagnose it by checking the lead content in blood, urine or hair. The lead content in blood and urine indicates that lead has recently entered the body, while the lead content in hair indicates the long-term absorption of lead by the human body. It is a good method to determine blood lead, urine lead and hair lead by atomic absorption spectrophotometry and ICP. If your body has some of the above-mentioned bad symptoms, and the lead content in blood per deciliter reaches 10 microgram, or the lead content in urine per liter exceeds 0.08 mg, you can be sure that you have lead poisoning. If the content of lead in your hair exceeds 9.4 micrograms per gram, it means that you have been poisoned by lead in the past and are still suffering from lead poisoning.
The damage of lead to human system is the main cause of chronic lead poisoning and acute attack of lead poisoning. If the "lead" content in the body is found to be too high through the examination of blood, urine and hair, it must be treated as soon as possible.
Harm of lead to human life
Lead is one of the earliest metals to master its application technology, and it is widely used. Lead is a kind of metal with certain toxicity. Frequent contact without attention to prevention may lead to lead poisoning. The toxicity of lead, as well as the knowledge of symptoms, diagnosis, detoxification and poison test of lead poisoning, have been recorded in ancient Chinese medical books, such as Memories of Injustice and Compendium of Materia Medica in Song Dynasty.
Both water and food contain trace amounts of lead, and the average adult's daily intake of lead from water and food is at least about 0. 1 mg. It can be seen that in daily life, lead mainly enters the human body through diet and digestive tract.
Lead is toxic to all parts of the human body. To put it simply, the toxic effects of lead are: lead can cause heme synthesis disorder, thus causing anemia; On the other hand, it can cause vasospasm and some obvious symptoms of lead poisoning, such as abdominal cramps, toxic encephalopathy, nerve paralysis and so on. When abdominal cramps may be accompanied by retinal arteriolar spasm and hypertension, the patient looks pale; The so-called "lead capacity" is caused by the contraction of skin blood vessels. Lead poisoning encephalopathy is a kind of hypertension, which is caused by cerebral vasospasm, cerebral anemia and even brain edema.
The most common symptoms after lead poisoning are neurasthenia, dyspepsia, paralysis and toxic encephalopathy. For example, short-term exposure to high concentrations of lead can lead to severe abdominal cramps and toxic hepatitis.
Basic symptoms of lead's harm to human life
Age class
Symptoms of lead poisoning
children
Behavioral function changes, simulated learning difficulties, decreased spatial comprehensive ability, dyskinesia, hyperactivity, impulsiveness, decreased attention, increased invasiveness, decreased IQ, anemia, hypertension, acute lead poisoning nephropathy, decreased immunity, zinc deficiency, iron deficiency, calcium deficiency, etc.
adult
Decreased immunity, headache. Dizziness, insomnia, dreaminess, memory loss, fatigue, muscle and joint pain. Chronic nephropathy, digestive dysfunction, hepatitis, hypertension, nephritis. Sexual dysfunction, loss of fertility, female abortion, premature delivery, infertility, stillbirth, etc. Poisoning can also cause damage to myocardial cells and cause heart disease.
husband
Lead poisoning bile. Memory loss, poor calculation ability, dull expression, spastic paralysis of knees, finger deformation, dyskinesia, mental disorder, speech frustration and unconsciousness. There will also be severe abdominal cramps and severe hemoglobin anemia.