The two targeted groups who are at the most risk for lead poisoning.

The two targeted groups who are at the most risk for lead poisoning.

• A. Pregnant women and children under 6
• B. Pregnant women
• C. Children under 6
• D. Adults

Answer: (A)

Lead poses the greatest harm to developing nervous systems, so the groups most vulnerable are young children and pregnant women. Children under six are especially at risk because their brains are rapidly developing, they absorb more lead relative to their body weight, and their behaviors (like hand-to-mouth activity) can increase exposure. Pregnant women are at risk because lead can cross the placenta and affect fetal development, potentially impacting growth and neurodevelopment. Because these two groups face the most serious consequences from exposure, they are the focus of screening and preventive efforts. Adults can be affected too, but the severe developmental impacts seen in young children and fetuses are not the same in adults.

Lead poses the greatest harm to developing nervous systems, so the groups most vulnerable are young children and pregnant women. Children under six are especially at risk because their brains are rapidly developing, they absorb more lead relative to their body weight, and their behaviors (like hand-to-mouth activity) can increase exposure. Pregnant women are at risk because lead can cross the placenta and affect fetal development, potentially impacting growth and neurodevelopment. Because these two groups face the most serious consequences from exposure, they are the focus of screening and preventive efforts. Adults can be affected too, but the severe developmental impacts seen in young children and fetuses are not the same in adults.