Dr. Speight did his undergraduate work in chemistry at University of North Carolina-Chapel Hill. He attended medical school at East Carolina School of Medicine and completed his residency at University of South Carolina-Columbia.
He is board certified in Family Medicine and has additional training in Metal Toxicology, Nutritional, and Environmental Medicine. He is a member of the American Academy of Environmental Medicine and is the President of The American College for the Advancement of Medicine (ACAM).
For five years he served as an assistant professor at Capitol University of Integrative Medicine in Washington, DC.