Adadevoh went to preschool at the Mainland Preparatory Primary School in Yaba, Lagos (1961–1962). She spent two years in
Boston, Massachusetts before moving back with her family to Lagos. She attended
primary school at the Corona School, Yaba in Lagos, Nigeria (1964–1968), then the
Queen's School, Ibadan (1969–1974) Nigeria for her secondary school education. Adadevoh graduated from the
University of Lagos College of Medicine with a
MBBS degree. She served her one-year mandatory housemanship at
Lagos University Teaching Hospital in 1981. She spent her residency at Lagos University Teaching Hospital and obtained her
West African College of Physicians credential in 1983. She then went to
London to complete her fellowship in
endocrinology at
Hammersmith Hospital. She spent 21 years at the First Consultants Medical Center in Lagos, Nigeria. There, she served as the Lead Consultant Physician and Endocrinologist. == Work with swine flu ==