1. Rich in protein food. Excessive lead in human body will affect protein's metabolism and lead to weight loss. If the intake of protein is insufficient, the accumulation of lead in tissues will increase obviously. If the intake of sulfur-containing amino acids such as protein, methionine and cystine is increased, the symptoms of lead poisoning can be effectively suppressed and alleviated. Foods rich in protein include: milk, eggs, quail eggs, beef and bean products.
2. Foods high in calcium. The metabolic process of lead and calcium in the body is similar, and the intake of food with high calcium content can prevent the accumulation of lead. Foods rich in calcium are: shrimp skin (up to 250g per 500g of shrimp skin), milk, beans and their products, crabs, sesame seeds, shepherd's purse, celery leaves, radish leaves, lettuce leaves, almonds, melon seeds, peach kernels, oranges, potatoes and bone soup (adding a small amount of vinegar during cooking is beneficial to the dissolution of calcium).
3. Foods rich in iron. Iron supplementation can reduce the accumulation of lead in human body and prevent anemia caused by lead poisoning (because iron deficiency will increase the absorption of lead). Foods rich in iron include: pig blood, pig liver, pork tenderloin, black fungus, red dates, eggs, purple radish, celery, carrots, tomatoes, hawthorn, peaches, strawberries, longan and so on. Vitamin C can also promote the absorption of iron.
In addition, tea contains tannic acid and other substances, which can combine with lead in the body to form soluble substances, which are excreted with urine; Garlic can dissolve lead poisoning.
If the lead content in the body is high, it has reached the level of poisoning, and it cannot be solved by driving lead away from food. You must take lead expelling drugs (such as dimercaprol, Qian Guohua, Qian Cong, etc.). ) under the guidance of a doctor.
Among many "culprits" endangering human health and children's intelligence, lead is a big one. According to the authoritative investigation report, the average lead content in modern human body has greatly exceeded 500 times that of the ancients 1000 years ago! However, human beings lack active and effective protection measures. According to the survey, the average lead content in many children is generally higher than that in young people; Traffic police are more prone to lead poisoning than people in other industries.
After lead enters the human body, except a part of it is excreted through feces and sweat, the rest dissolves into the blood after several hours, which hinders the synthesis of blood, leading to anemia, headache, dizziness, fatigue, drowsiness, constipation and limb pain. Some mouths have a metallic taste, and symptoms such as arteriosclerosis, digestive tract ulcer and fundus hemorrhage are also related to lead pollution. Children with lead poisoning have developmental retardation, loss of appetite, inconvenient walking, constipation and insomnia; If you are a pupil, you will be accompanied by hyperactivity, hearing impairment, inattention and mental retardation. This is because lead enters the human body and invades the nerve tissue of the brain through blood, which makes the supply of nutrients and oxygen insufficient and causes brain tissue damage, which may lead to lifelong disability in severe cases. Especially, children are in the stage of growth and development, and their sensitivity to lead is higher than that of adults. Lead entering the body has a strong affinity for the nervous system, so the absorption of lead is several times higher than that of adults, and the victims are particularly serious. When lead enters pregnant women, it will cross the placental barrier, affect fetal development and cause deformity.
Effective prevention of lead poisoning is one of the topics that scientists are exploring and overcoming. But as an individual, it is very important to strengthen prevention and self-protection. First of all, don't use lead-containing materials to make tableware, and it is best not to use colored glazed ceramic products to hold acidic food and drinks; Try to go to streets or highways with large traffic and serious lead pollution as little as possible, especially for children. Drivers should not smoke gasoline with their mouths, keep a certain distance from the car in front when driving, and it is best to close the windows on crowded roads. Traffic police, auto repair and gas station staff should take a bath and change clothes in time after work, and go to the hospital for regular inspection so as to find and treat them in time.
In a word, to promote the scientific and safe use of lead, we should not only eradicate and avoid the pollution sources of lead as much as possible from the macro perspective, but also protect ourselves from lead infringement from the micro perspective.
Lead and its compounds have certain toxicity, which will do harm to 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. Reasonable nutritional measures can improve resistance, enhance the body's ability to detoxify toxic substances, reduce the absorption of toxic substances and promote their transformation into non-toxic substances and discharge them from the body, which is conducive to rehabilitation or alleviating poisoning symptoms.
The diet should contain enough high-quality protein from protein, especially protein, which is rich in sulfur-containing amino acids (such as cysteine), which is beneficial to reduce the lead concentration in the body and alleviate the symptoms of poisoning. Protein deficiency will reduce the body's ability to expel lead, increase the body's storage of lead, and increase the body's sensitivity to lead poisoning. Generally, the daily intake of protein should be 1.5g/ kg body weight, in which animal protein and legume protein, such as milk, eggs, lean meat, poultry, fish and shrimp, soybeans and bean products should account for more than 1/2.
People exposed to lead should pay attention to calcium supplementation, and the method of adjusting the proportion of dietary calcium and phosphorus can reduce the lead load of the body. Our people's diet is mainly grain, combined with meat and bean products. These foods are rich in phosphorus and can meet the demand of phosphorus, but the supply of calcium is relatively insufficient. Supplementing appropriate amount of calcium can reduce the absorption of lead, reduce lead toxicity and relieve the symptoms of lead poisoning.
People exposed to vitamin lead supplementation should pay attention to vitamin deficiency, and foods rich in vitamins, especially vitamin C, should be selected during dietary deployment. Lead can promote the consumption of vitamin C and make it lose its physiological function. Therefore, long-term exposure to lead will cause vitamin C deficiency in the body and even cause symptoms such as gingival bleeding. 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 by protecting sulfhydryl enzymes, and promotes the discharge of lead. Appropriate vitamin E supplementation can antagonize the peroxide reaction caused by lead, and 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. Among them, vitamin B 1 is particularly effective.