Dr. Rayetta Henderson is a Managing Scientist and the Assistant Director of the Foods & Consumer Products Practice with ToxStrategies; she is located in Wilmington, North Carolina. Dr. Henderson has been involved in numerous assessments of food, feed, and nutritional supplement ingredients, including the preparation of Generally Recognized as Safe (GRAS) dossiers with and without FDA notification. She has overseen the hazard assessments of more than 70 nutritional supplement ingredients, which included identification, critical review, and integration of relevant safety and regulatory data.
Dr. Henderson has extensive knowledge of the UN’s Globally Harmonized System (GHS), including hazard assessment and classification for jurisdictions worldwide, with specific experience in OSHA’s 2012 revised Hazard Communication Standard (HazCom or HCS) and the EU’s Classification, Labeling, and Packaging (CLP) Regulation. Dr. Henderson has experience managing extensive scientific programs for regulatory compliance; in her previous role as technical manager of the global Nickel REACH Consortia, Dr. Henderson managed the strategic planning and implementation of research programs to fulfill data requirements for nickel and nickel-containing substances for the EU’s Registration, Evaluation & Authorisation of Chemicals (REACH) Regulation. Dr. Henderson also has experience supporting trade associations in the development of strategies for addressing metal-specific issues related to REACH and CLP and has provided comments on CLP regulatory guidance documents.
Dr. Henderson also has substantial experience designing, monitoring, and interpreting scientific data from toxicity studies and alternative-method studies in support of hazard evaluations, with a focus on application of bioaccessibility-based methods. She has studied and performed health effects assessments on various chemicals, including perfluorinated compounds (PFCs), dioxin-like compounds, and metals, particularly nickel and nickel-containing substances. Dr. Henderson earned her Ph.D. in Toxicology from the University of North Carolina at Chapel Hill, where her research focused on understanding the mechanism of action leading to the developmental toxicity of perfluorooctane sulfonate (PFOS).