Front matter -- Reviewers -- Preface -- Contents -- Abbreviations and Acronyms -- Summary -- 1 Introduction -- 2 Evaluating the Evidence -- 3 Toxicology -- 4 Epidemiologic Studies-New Citations for Update 2006 and Background on Repeatedly Studied Populations -- 5 Exposure Assessment -- 6 Cancer -- 7 Reproductive and Developmental Effects -- 8 Neurologic Disorders -- 9 Other Health Effects -- 10 Research Recommendations -- APPENDIX A Agendas of Public Meetings Held by the Committee to Review the Health Effects in Vietnam Veterans of Exposure to Herbicides (Sixth Biennial Update) -- APPENDIX B Clarification of Cancer Groupings Used in Reporting Results, with Correspondence to NIOSH Cause-of-Death Codes and ICD Codes for Cancers -- APPENDIX C Epidemiologic Tables for Chapter 4 -- APPENDIX D Committee to Review the Health Effects in Vietnam Veterans of Exposure to Herbicides (Sixth Biennial Update) and Staff Biographies.