Why are children more susceptible than adults to chemicals?

Children are more susceptible to chemicals than adults due to their developing bodies and higher metabolism rates, which can lead to a greater absorption of harmful substances. Their smaller size means that they have a higher surface area-to-volume ratio, resulting in increased exposure relative to their body weight. Additionally, their organs and systems are still maturing, making them less capable of detoxifying and excreting harmful chemicals. Finally, children often engage in behaviors, such as hand-to-mouth activities, that increase their risk of exposure.