What are the risks associated with excessive radiation exposure?

Excessive radiation exposure is associated with a variety of serious health risks, and the correct answer accurately addresses these potential outcomes. One of the most significant risks is an increased likelihood of developing cancer; ionizing radiation can cause changes in cellular DNA, which may lead to malignant transformations over time. The types of cancer that are commonly linked to radiation exposure include leukemias and various solid tumors.

In addition to cancer, skin burns can occur as a direct result of high doses of radiation, particularly with radiation therapy or accidental exposure. These burns can range from mild reddening of the skin to severe dermatitis, depending on the amount of radiation and duration of exposure.

Moreover, excessive radiation can lead to damage to internal organs. The severity of this damage differs based on factors such as the organ's sensitivity to radiation and the extent of exposure. Organs such as the thyroid, lungs, and gastrointestinal tract are particularly vulnerable, which can lead to long-term health complications.

The other options touch on health concerns that are not typically associated with radiation exposure. Dehydration and muscle cramps are more commonly related to environmental factors or physical activity, while reduced blood flow to extremities is generally linked to vascular issues rather than radiation. Allergic reactions and headaches are also not