Which of the following is a method to reduce internal radiation exposure?

• A. Reduce the time you are exposed
• B. Smoking restrictions
• C. PPE provides protection against internal exposure
• D. Consumption of food and beverages

Answer: (C)

Internal exposure happens when radioactive material gets inside the body, such as by inhalation or ingestion. To lower the dose from that contamination, you focus on preventing uptake and entry routes. Personal protective equipment helps by forming a barrier against inhaling radioactive particles and from contaminating skin or hands that could transfer material to the mouth or food. A respirator reduces inhalation of airborne radionuclides, while gloves, suits, and proper hygiene minimize transfer to the mouth or ingestion. Because these measures directly block how radionuclides enter the body, they reduce internal exposure more effectively than simply reducing time in a room or handling food and beverages, which can actually increase ingestion risk. Hence, PPE provides protection against internal exposure.