Exposure limits
The Constitution of the World Health Organization (WHO) states the following: "Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." Keep this in mind when reading about different exposure limits and the reasoning behind them.
Limits and levels
Exposure limits from different countries and radiation levels from high to low.
WHO
WHO recommends technology first, health second.
Lethal doses
The US Armed Forces established the exposure limits that are in place today. They wanted to know what would happen if these limits were exceeded.