For asbestos to cause health issues, what must occur?

• A. It must be ingested
• B. It must be physically handled
• C. It must be inhaled
• D. It must be exposed to water

Answer: (C)

Asbestos poses significant health risks primarily when its fibers are inhaled. Asbestos is a naturally occurring mineral that can break down into tiny, airborne fibers. When these fibers are released into the air and subsequently inhaled, they can penetrate deep into the lungs, leading to serious health conditions such as asbestosis, lung cancer, and mesothelioma. The inhalation of asbestos fibers is particularly dangerous because the body's natural defense mechanisms are insufficient to eliminate these particles once they are lodged in lung tissue.

While asbestos exposure can occur through various means, such as ingestion or physical handling, the most critical pathway leading to health issues is the inhalation route. This makes it vital for occupational hygiene practices to focus on minimizing airborne asbestos fibers in environments where asbestos is present.