In the early twentieth century, people sometimes ingested radioactive substances in "health drinks" made with radium-enriched water. Why did they often develop bone cancer?

A. The radium leached bone mineral from the skeleton.
B. The radium caused tumors in the digestive tract which then spread to the bone tissue.
C. The radium caused lung cancer that then spread to the bone tissue.
D. Bone tissue absorbs foreign elements from the blood, and the radium directly affected bone cells.
E. There is no evidence that the development of bone cancer was related to ingestion of radium.


Answer: D

Anatomy & Physiology

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