What is a teratogen?

A teratogen is defined as an agent that interferes with the normal development of an embryo or fetus. This means that teratogens can cause birth defects, developmental malformations, or other impairments during pregnancy if the mother is exposed to these substances. Examples of teratogens include certain drugs, alcohol, infectious agents, and environmental chemicals.

Understanding teratogens is crucial in health and safety, especially in situations where pregnant individuals may be exposed to harmful substances. By identifying teratogens, health professionals can work to mitigate risks to fetal development and ensure safer environments for expectant mothers.

In this context, the other choices do not accurately represent the definition of a teratogen. For instance, agents that cause allergic reactions do not necessarily affect fetal development, and chemicals that accelerate aging or enhance chemical reactions are unrelated to embryonic or fetal growth and health.