What is the effect of internal dose on the body?

The effect of an internal dose of radiation primarily impacts the areas of the body where radioactive materials accumulate. When radioactive substances are ingested, inhaled, or otherwise enter the body, they can localize in specific organs or tissues, leading to increased radiation exposure and potential damage in those areas. This localized exposure can result in a range of health effects, depending on the type of radioactive material, the dose received, and the duration of exposure.

For example, if a radioactive isotope is absorbed into the thyroid gland, it can lead to conditions such as thyroid cancer due to the concentrated radiation exposure there. Unlike external radiation, which generally affects the entire body, an internal dose is specific and can have severe implications for the organs where the radionuclides are deposited. This is why monitoring and managing internal doses is crucial for radiation protection and health safety in exposed individuals.