In recent years, scientific research has found that the average lead content in the modern human body is 500 times higher than that of the ancients thousands of years ago. The high content of lead in the human body is extremely harmful-reducing memory, leading to anemia, nerve palsy, kidney function decline, and menstrual disorders in women. Especially children.

　　1: What is lead?

　　Lead is a heavy metal element whose concentration in human blood should be zero. Not only does it have no physiological effect on the human body, on the contrary, There are many pathogenic effects.

　　Although humans have recognized the dangers of lead poisoning for a long time, how to lead poisoning and lead damage in babies has not been given due attention.

　　2: The source of lead?

　　(1) Environmental lead source:

　　Industrial waste gas, soot, mining pollution, environment Pollution, automobile exhaust, contaminated crops, aquatic products, industrial farming agricultural products (adults have the most opportunities for absorption)

　　(2) Household lead sources:

　　 tap water, tableware, plastic products , Inferior toys, prints, teaching aids, stationery, paints, cosmetics, hair dyes, nail polish, etc.

　　(3) Bad habits:

　　Bite your fingers, bite foreign objects, mistakes Food, not washing your baby''s hands, working clothes to go home, no comprehensive anti-lead awareness, etc.

　　3: The harm of lead?

　　 stature and intelligence Low health, low immunity, anemia, ADHD, inattention, mental illness, and abnormal behavior.

　　4: Symptoms and manifestations of lead poisoning?

　　(1): Poor eating, picky anorexia, and often get distracted or dazed when eating. Foreign food, biting nails, biting toys, biting foreign objects, pencils, painting tools;

　　(2): Capricious timid, crying, temper tantrum, emotional instability, unable to sit still, small movements More, less focused, not paying attention to other people’s speeches, and disobeying discipline

　　 (3): I often lose my way around doing things, procrastinate, and have poor self-care ability. Difficult to adapt to collective life, difficult to get along with children, emotionally irritable, easy to conflict, unwilling to go to nursery school, kindergarten, and difficult to separate from parents.

　　 (4): Some children have low immunity, often have a cold, cough, fever, diarrhea, short height, and insufficient weight. The effect of calcium supplementation is not obvious, and there is often abdominal pain.

　　(5): How does lead enter the body?

　　The respiratory and digestive tracts are the means of lead absorption. The digestive tract absorbs 90% of the lead and the respiratory tract absorbs 10% of the lead

　　6: Why are children most susceptible to lead?

　　(1) Children are more likely to absorb lead than adults (0-6 years old) The digestive tract is taken into the body 90% of the respiratory tract into the body accounts for 10% The digestive tract is the main way for children to absorb lead. The absorption rate of lead in adult digestive tract is 5-10%. Children are as high as 42-53%;

　　(2)Children have a hand-mouth movement to make the lead in the environment pass through the entrance of the hand strap

　　(3) 1 meter range on the ground Inside is the part with the highest concentration of lead in the air. The height of the child is in the lead-breathing breathing zone (1 meter range), so that it absorbs more lead through the respiratory tract than adults.

　　 (4) Compared with adults, children have only one-third of the ability of the body to discharge lead. Even if the same amount of lead is ingested, the lead retained in children is still up to 30%.

　　(5) The younger you are, the higher your susceptibility to lead. Most of the cases of lead poisoning in children occur under 6 years old. Children grow fast and have a strong metabolism. Organs and cause serious harm, especially the central nervous system, brain tissue, skeletal system, blood system, urinary system, immune system.

　　How to keep children away from lead hazards in life?

　　※Correct children’s bad hygiene habits, wash hands frequently, cut nails frequently;

　　※Clean your baby’s toys frequently, and items that may be put in your mouth;

　　※Do not take your baby to the roads with heavy traffic, bare ground, and walk and play near industrial and mining enterprises;

　　※The first 15 seconds of the faucet flow in the early morning should not be directly used for food, especially not for preparing milk powder, rice flour and drinking water. It can be used to mop the floor and wipe the furniture;

　　※ In industrial and mining enterprises, workshops, and family members engaged in lead operations, take frequent showers, do not wear work clothes home, especially wash hands and cut nails frequently;

　　※Select low-lead or zero-lead poison for home decoration Decoration materials, paints and coatings;

　　 ※Do not open windows frequently in the homes near roads, industrial and mining enterprises, and open storage yards. Regularly clean furniture and objects that your baby often touches. Keep the ground clean and free of dust;

　　※Do not push the stroller to walk by the road, cross the road, and stay in areas with more lead dust;

　　※Wash the vegetables and fruits , Fruit peeled and eaten as much as possible;

　　※Control the intake of fat, pay attention to dietary rules, high fat will aggravate the harm of lead to the central nervous system;

　　※Do not try to be direct inside the family Use coal fuel;

　　※Family meals avoid high-lead foods such as preserved eggs, popcorn, canned foods, and industrialized foods;

　　 ※Ensure that the baby eats regularly at every meal Pay attention to nutritional balance, especially foods that contain enough calcium, iron, zinc, dietary fiber, plant acids, and vitamin C in the diet.

　　9: What are the foods that eliminate lead?

　　90% of the lead enters the body through the digestive tract, so the nutrients prevent the lead from entering the body through the intestine Is the most effective method.

　　 (1): Often eat kelp, seaweed, yam, konjac products, fungus, white fungus, garlic, onion, beans and other foods that promote the removal of lead.

　　 (2): Eat foods rich in calcium: milk and dairy products, shrimp skin.

　　 (3): Eat more foods rich in dietary fiber: Coarse grains and root vegetables have more dietary fiber.

　　 (4): Eat more foods rich in VC: broccoli, green pepper, bitter gourd, fresh dates, lemon, citrus, strawberry, kiwi, etc.

　　When the blood lead exceeds 25 micrograms per liter of blood, it is necessary to use nutritious food to discharge lead, because the nutrients in the food cannot reach the amount of lead.

　　10: Lead safety standards:

　　China’s blood lead testing standards and classification

　　 1994, 30 countries in the world The officials and scholars of the region and the region held the first global children’s lead poisoning prevention conference. The definition standard for children’s lead poisoning is: more than or equal to 10/g/dl, regardless of whether there are corresponding clinical symptoms and signs, and changes in biochemical indicators , You can diagnose lead poisoning. (10μg/dl = 100 μg/l)

　　Blood lead content greater than or equal to 100 μg/l is lead poisoning

　　Blood lead safety standards?

　　United States Dr. Bruce Lanfell, a researcher at the Children’s Hospital of the Cincinnati Medical Center, believes that even if children’s blood lead levels meet the 100-microgram/liter standard, the toxic and side effects of lead on children are still obvious. Low IQ and movements make their performance disappointing. Nitman of the US Centers for Disease Control (CDC) believes that even if the blood lead level is as low as 25 micrograms per liter, there are still obvious learning disabilities, which will impair children''s ability to read, math, and short-term memory. Taking the 25-microgram/liter standard as a pointer will mean that 13 million people in the United States still have "lead damage." He believes that the current standards are insufficient to protect children''s health.

　　American experts believe that the blood lead content of 25 micrograms per liter (25 μg/L) is the barely acceptable safety standard. China’s current blood lead classification is:

　　0-99 micrograms /Liter normal

　　100-200 micrograms/elevated blood lead disease

　　200-250 micrograms/liter mild lead poisoning

　　250-450 micrograms/liter Moderate lead poisoning

　　 over 450 micrograms per liter of severe lead poisoning

　　In 1999, experts of the International Union for the Elimination of Children’s Lead Poisoning warned that if China does not prevent children’s lead poisoning , 20 years later, Chinese IQ is 5% lower than Americans, which means that 20 years later, Of the more than 100 million people who bid farewell to children’s age, 3 to 5 million have mental retardation, 10 to 13 million people have changed from ordinary people to mediocre, 2 million have high IQs to ordinary people, and 3-5 out of 100 people These are people with intellectual disabilities.