Which of the following is among long-term effects thus far observed?

• A. Embryological effects
• B. Cataracts
• C. Life-span shortening
• D. All of the above

Answer: (D)

Long-term effects of radiation exposure include a range of late outcomes that can appear after the initial exposure. Embryological effects can occur with exposure during pregnancy, potentially leading to developmental abnormalities. Cataracts are a well-established late effect linked to radiation dose to the eye lens, with risk rising as dose accumulates. Life-span shortening has been observed in some studies at high cumulative doses, indicating broader impacts on longevity. Because each of these has been observed as a possible late consequence, all of the above are among the long-term effects noted in the literature.