Yes, nutritionists and dietitians do a lot of similar work and you can definitely transition from one career to the other. This may be more or less difficult depending on where you live, as there are many states that have licensing regulations for RDNs and none (or very few) for nutritionists. That being said, the education to become either of the two is often quite similar, so making the switch is certainly possible. What’s more, nutritionists can earn the Registered DieticianNutritionist (RDN) credential through the Commission on Dietetic Registration (CDR).