How do you know if your child has lead poisoning?
The previous Weibo of "silver bracelets can make children stupid" exploded!
To what extent did it explode? Weibo hot search instantly ranked first, more than 4,000 parents participated in the discussion, and the cumulative number of readings was 120 million......
All of a sudden, everyone was very nervous:
"Lead" is indeed the "number one killer" of children's intellectual development!
There are many kinds of "metal trace elements" in the human body, which will have certain physiological functions to a greater or lesser extent. However, lead is an exception!
Not only does it not have any physiological function in the body, but also its toxicity has no lower limit, and any dose concentration can cause damage to the body. The phrase "to talk about toxicity out of dose is to play hooligan!" is not applicable to lead!
And it's not uncommon, and there's a good chance it's hidden in your husband's hands......
Image source: Science Family Parenting Original
"Doctor!
My son has become hyperactive, inattentive, and grumpy in just a few months, what's going on?"
In December 07, Ms. He anxiously took her son to see a doctor:
Before, my son had a quiet personality, but in the last six months, his mood has become particularly unstable!
Especially in the past 1 or 2 months, when he was just in the first grade, he often had disputes with his classmates, and the teacher had to come to me almost every other day.
Last Friday, my son accidentally touched him at the same table, but my family treasure actually grabbed the other party's hand and bit someone!
After a hospital examination, it was found that the little boy had "blood lead as high as 112 micrograms per liter", which was already lead poisoning.
But the strange thing is that after the boy took the lead removal drug for 3 months, the lead content in his body did not decrease but increased, soaring to 163 micrograms per liter! Later, after learning more about his family's living habits and family situation, he understood:
The little boy's father and grandfather are both old smokers! Every day, he consumes four packs of cigarettes at home.
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Experts say:
Ingestion of lead dust is a major source of lead exposure in children. Not only does cigarettes contain 0.8 micrograms of lead per gram, but when someone smokes, the smoke adsorbs the lead in the air, making the air 60 times more lead than fresh air.
These lead dust are mainly concentrated at a height of about 1 m above the ground, which is close to the height of most children's mouths and noses, so children are more likely than adults to cause lead poisoning due to passive smoking.
The boy was exposed to smoke for a long time, and his bones also contained lead. When a child takes lead removal medicine, the lead in the blood will be excreted, but the lead in the bones will be released into the blood, and the child will continue to smoke passively during this period, which is the main reason why the blood lead does not decrease but increases.
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At present, the standard for lead poisoning in mainland China is as follows: blood lead content greater than 100 micrograms/liter is lead poisoning.
-- Principles for the Grading and Treatment of Hyperleademia and Lead Poisoning in Children (Trial)
100 micrograms/liter, what is the concept?
At present, the only way to accurately detect lead poisoning in children is to test for blood lead, not trace elements!
Hang "pediatrics", "physical examination" and "hematology" can be, and it is best to check up 1 time a year for babies aged 0~6.
General diagnostic criteria for lead poisoning are:
Normal: less than 100 mcg/L
Hyperleademia: 100~199 μg/L
Mild lead poisoning: 200~249 micrograms/L
Moderate lead poisoning: 250~449 μg/L
High grade of lead poisoning: more than 450 mcg/L
For every 100 micrograms/liter increase in blood lead, a child's IQ dropped by 6.67 points.
Even if the blood lead level is lowered through subsequent treatment, the child's previously affected neurological development will be difficult to recover!
Babies under the age of 6 (especially under 3 years old) are more susceptible to the toxic side effects of lead.
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Chronic poisoning occurs when the amount of lead accumulated in the body reaches a toxic dose due to prolonged, low-dose exposure (e.g., secondhand smoke).
Image source: Science Family Parenting Original
But pay attention!
The presence of these symptoms does not necessarily mean that lead poisoning is the same as lead poisoning, and the absence of symptoms does not necessarily mean that blood lead is normal. Most children with elevated blood lead concentrations will not have symptoms associated with the overt clinical manifestations of lead poisoning.
Therefore, it is recommended to take your child to do a "blood lead test" once a year is the most accurate!
Image source: Science Family Parenting Original
In daily life, there are many things that contain lead, such as:
Image source: Science Family Parenting Original
I believe you must be panicked when you see "old-fashioned popcorn", "preserved eggs" and "canned fruits", how can any child not eat these?
We've listed some of the most frequently asked questions to answer:
1. I make a bowl of "preserved egg and lean porridge" for the baby almost every morning, does it have any impact?
As early as 2015, the mainland improved the production process to produce "lead-free" preserved eggs, but "lead-free" preserved eggs do not mean that they are completely lead-free, according to relevant national regulations, preserved eggs with a lead content of no more than 0.5 mg/kg, can be marked as "lead-free".
Therefore, for preserved eggs, pregnant women and children should eat less, and it is best not to eat them. (Old-fashioned popcorn, canned fruit is also best left uneaten)
2. Does it affect the child's appetite to chew on toys and pencils during homework?
The coating on the outside of spray-painted toys and pencils contains a certain amount of lead, which can indeed cause lead poisoning if the child chews regularly. Especially for low-quality toys, the content of three-no products is even higher.
Therefore, when buying toys/stationery, go to regular stores, do not buy three-no products, and the habit of chewing toys and stationery should also be corrected in time or replaced by other things.
3. Often bake and barbecue for the baby, does that tin foil contain lead?
He Rongxing, an associate professor at the School of Chemistry and Chemical Engineering of Southwest University, said that if the material of tin foil is pure aluminum or pure tin, it will have little impact on the human body. However, if it is industrial aluminum or industrial tin, it contains other impurities, such as lead, chromium and other heavy metals, which must be harmful to the human body.
So don't buy low-quality tin foil, take advantage of the small advantage and suffer a big loss......
4. Grandparents often take their babies to the underground parking lot to play in the summer, will the exhaust contain lead?
In the United States, 170 million people have had their IQs drop due to "leaded gasoline exhaust".
Although unleaded gasoline is now widely used, it has to be said that unleaded gasoline is not "0" lead gasoline, let alone harmless gasoline, and the degree of automobile exhaust pollution is still not negligible.
Therefore, prevention is better than cure!