What does the term "systemic effects" mean regarding pesticide exposure?

The term "systemic effects" in relation to pesticide exposure refers to impacts that are not limited to the site of contact but instead occur throughout the organism's body after the pesticide is absorbed. When a chemical is systemic, it means that once it enters the body, it can circulate through the bloodstream or other bodily fluids, affecting various organs and systems rather than just causing localized irritation or damage. This is particularly relevant for certain types of pesticides that are designed to be taken up by plants or animals and then spread throughout their tissues to provide protective effects or to be effective against pests.

In contrast, localized effects are confined to the area where the pesticide was applied or came into contact. The notion of effects dissipating quickly or being immediate and then subsiding does not align with the understanding of systemic effects, which can be prolonged and may not manifest immediately. Understanding systemic effects is crucial for recognizing the potential risks associated with pesticide use, addressing safety precautions for applicators, and implementing appropriate measures for environmental protection.