血铅超标危害大：专家揭示铅中毒对儿童不可逆损伤及预防措施

Group 1 - Lead exposure primarily affects children due to their underdeveloped bodies, leading to irreversible impacts on multiple systems [1] - The World Health Organization identifies lead as one of the top ten toxic chemicals of public health concern, with no safe threshold in the human body [2] - Current safety reference standard for blood lead levels in China is set at 100 micrograms per liter, although levels as low as 50 micrograms per liter can still cause cognitive and behavioral issues in children [2] Group 2 - Key populations for blood lead testing include children, pregnant women, and the elderly, with hospitals using ICP-MS methods for detection [2] - Environmental factors are the main contributors to lead poisoning, with certain foods like lead-containing preserved eggs and old popcorn machines posing risks [2] - Recommendations for reducing lead exposure include maintaining personal hygiene, cleaning toys, and avoiding lead-containing utensils [3] Group 3 - Nutritional interventions can help lower blood lead levels, such as increasing protein-rich foods and vitamin C intake, which can bind with lead and promote its excretion [3]