Understanding Radiation: Overview

Radiation and Radioactivity
We cannot eliminate radiation from our environment. We can, however, reduce our risks by controlling our exposure to it. Understanding radiation and radioactivity will help you make informed decisions about your exposure. 

Health Effects
Health effects are the central focus of EPA's Radiation Protection Programs.

Radiation Protection Basics
Three basic concepts apply to all types of ionizing radiation. When we develop regulations or standards that limit how much radiation a person can receive in a particular situation, we consider how these concepts might affect a person's exposure.