Dr. Rayetta Henderson is a Managing Scientist in the Foods & Consumer Products Practice at ToxStrategies/21CT. She has extensive experience in the assessment of food, feed, and dietary supplement ingredients, including a heavy focus in the study of botanicals. Dr. Henderson’s work includes developing materials to support regulatory submissions, such as Generally Recognized as Safe (GRAS) and New Dietary Ingredient (NDI) notifications to FDA. More recently, her focus has extended to the assessment of cannabidiol (CBD) and other hemp-derived products for use in foods and dietary supplements, including safety assessment and toxicology testing programs.
Dr. Henderson has prior experience working for an international trade association, including aiding in the development of strategies for addressing regulatory and technical issues in the US and EU. In addition, in her previous role as technical manager of the global Nickel REACH Consortia, she managed the strategic planning and implementation of research programs to fulfill data requirements for nickel-containing substances for the EU’s REACH Regulation. Dr. Henderson also has extensive knowledge of the UN’s Globally Harmonized System (GHS), including hazard assessment and classification.
Dr. Henderson has substantial experience designing and interpreting scientific data from toxicity studies and alternative-method studies in support of hazard evaluations, with a focus on 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 perflurooctane sulfonate (PFOS).