The WTO dispute settlement bodies declined to rule on the status of the precautionary principle. However, with respect to the Sanitary and Phytosanitary Agreement (SPS), in several cases the Appellate Body has given implicit indications that a precautionary approach could underpin some SPS obligations. Whether the lessons to be drawn from this complex case law can be applied to genuine environmental issues remains to be seen. Keywords WTO law, sanitary and phytosanitary measures, precautionary principle, risk assessment, risk management, level of protection Contents VI.43.1 Introduction: background and context VI.43.2 The SPS Agreement VI.43.2.1 Dispute Settlement Bodies' case law VI.43.2.2 Lessons to be drawn from the DSBs' case law VI.43.3 The GATT Agreement VI.43.4 Conclusions VI.43.1 Introduction: background and context Before 1991, the environment-trade debate was primarily an arcane speciality that attracted little attention within the legal community. In endeavouring to encourage 'the full use of the resources of the world', 1 the GATT 1947 system paid very little attention indeed to environmental concerns; consequently, trade policy and environmental policy evolved along separate paths for several decades. Despite the change of tone in 1994 in the wording of the WTO's aims-'an optimal use of the world's resources in accordance with the objective of sustainable development' 2-the fun-1 Preamble to the 1947 General Agreement on Tariffs and Trade (GATT) 55 UNTS 194. 2 Preamble to the 1994 Agreement Establishing the World Trade Organization (WTO Agreement), 1867 UNTS 154. As noted by the WTO Appellate Body, this change in orientation must 'add colour, texture and shading to the interpretation of the agreements annexed to the WTO Agreement' (Shrimp, para. 153). The Doha WTO Ministerial Declaration of 14 November 2001 strongly reaffirms the commitment to the objective of sustainable development, as stated in the Preamble to the Marrakesh Agreement: 'We are convinced that the aims of upholding and safeguarding an open and non-discriminatory multilateral trading system, and acting for the protection of the environment and the promotion of sustainable development can and must be mutually supportive.. .. We recognize that under WTO rules no country should be prevented from taking measures for the protection of human, animal or plant life or health, or of the environ-M4518-KRAMER (EE10 Ency_9781785365652_t.indd 599 09/05/2018 12:01