Vodou is a religion, and more specifically an Afro-Haitian religion. It has been described as the "folk religion of Haiti," and the "national religion" of Haiti. Many Haitians take the view that to be Haitian is to practice Vodou. Vodou is one of the most complex of the Afro-American traditions; the scholar Ina J. Fandrich has called it a "neo-African religion". The anthropologist Paul Christopher Johnson characterized Haitian Vodou, Cuban Santería, and Brazilian Candomblé as "sister religions" due to their shared origins in Yoruba traditional belief systems.