Because industrial waste gas and automobile exhaust contain large amounts of lead, lead in the air or soil can attach to children's hands through dust and direct contact. Frequent handwashing can minimize the harm caused by lead.
Stay away from foods high in lead, such as popcorn, french fries, century eggs, canned foods, and puffed snacks. This is because the equipment used to make popcorn and puffed snacks is made from lead alloys. Lead has a very low melting point, and during the heating process, a large amount of lead can enter the food. The raw materials for century eggs contain lead oxide and lead salts, and lead can penetrate the eggshell and enter the egg. Traditional century eggs have a very high lead content; even if a child eats only a small amount, their lead intake can exceed 5 times the daily allowable intake for a 2-year-old. Canned foods or beverage cans are soldered with lead-containing tin. When stored for long periods or used for acidic foods, lead can easily leach out. Lead also has a strong ability to penetrate, making it easy to enter the food. In daily life, in addition to avoiding foods high in lead as much as possible, children can also eat more lead-expelling foods, such as tomatoes, celery, and peaches.
Children should try to stay away from high-lead environments, such as roadsides, bus stations, and gas stations, because the air in these places contains a large amount of lead, which, when inhaled by children, can cause direct harm.