Name a factor that increases the risk of lead exposure in older homes.

Deteriorating lead-based paint or chipping, peeling surfaces are significant factors that increase the risk of lead exposure in older homes. Many homes built before 1978 used lead-based paint, which can pose serious health risks when it deteriorates. When paint chips or peels, it creates lead dust and particles that can be inhaled or ingested, particularly by children who are more likely to put their hands or objects in their mouths after contacting these surfaces. This exposure can lead to severe health issues, including developmental delays and cognitive impairments.

In contrast, well-maintained paint and surfaces would not increase risk, as they are intact and do not release lead particles. Newly installed windows and updated electrical systems also do not contribute to lead exposure. These improvements are generally part of efforts to modernize a home and do not involve lead hazards if they are installed properly. Therefore, recognizing the significance of deteriorating lead-based paint is crucial in assessing lead exposure risks in older homes.