Hormesis, the precautionary principle, and legal regulation.

Many nations have shown mounting interest in a simple idea for the regulation of risk: In case of doubt, follow the precautionary principle (O'Riordan T, Cameron J eds. Interpreting the precautionary principle, 2002). Avoid steps that will create a risk of harm. Until safety is established, be cautious; do not require unambiguous evidence. In a catchphrase: Better safe than sorry.