Proposed and chaired themed session: "How to Ensure Only High-Quality Systematic Reviews Get Published: Strategies from Medical and Chemical Risk Research". Abstract: In chemical risk research many published evidence syntheses, whether traditional or systematic, either fail to report information necessary for appraising the credibility of their findings and/or use invalid methods for synthesising evidence. This makes it difficult to be confident that policy decisions based on such reviews are actually evidence-based. Here we present empirical evidence of methodological shortcomings in reviews published in chemical risk research and look at how best practice standards applied during the conduct and peer-review process can improve the quality of published evidence syntheses, with practical examples from European chemical regulators, industry consultants, and the Cochrane Collaboration.