The idea of the precautionary principle is to have a concept to regulate a substance if there is no, or not sufficient scientific data available to properly assess a risk, or if the uncertainty in its assessment is regarded as too big. However, for BPA a large amount of scientific data is available. The regulatory experts have a comprehensive understanding of the substance, and the risk assessments are based on a large data base. Therefore the risk associated with BPA has been extensively and thoroughly assessed.