The frequency of exposure refers to how often an individual is exposed to a toxic substance. It can vary from a single encounter to repeated exposures over time. The frequency can be categorized as:
Single Exposure: One-time exposure to a toxic substance. Intermittent Exposure: Occasional exposure with gaps of non-exposure in between. Continuous Exposure: Regular and ongoing exposure without significant breaks.
The frequency of exposure plays a critical role in determining the cumulative toxicity of a substance. Repeated exposures, even at low doses, can lead to bioaccumulation and increased health risks.