What is chronic radiation exposure?

• A. Continuous or prolonged exposure to ionizing radiation over an extended period of time.
• B. A single short exposure.
• C. Exposure only to ultraviolet radiation.
• D. Exposure to non-ionizing radiation.

Answer: (A)

Chronic radiation exposure means ongoing exposure to ionizing radiation over an extended period, causing the dose to accumulate in the body over time. Ionizing radiation has enough energy to knock electrons off atoms, which can damage DNA and other cellular components. When exposure happens repeatedly or continuously, even at low doses, the total accumulated dose increases the long-term risk of health effects such as cancer, compared with a one-time event. This differs from a single short exposure (acute) and from exposure to non-ionizing radiation or to ultraviolet radiation in contexts that do not involve ionizing energy.