More often than not, we see people using the terms dietician and nutritionist as though they are the same. While there might be certain similarities between the two, their major differences lie in their different roles, designations, and responsibility. A nutritionist is anybody who has acquired any degree in nutrition.
In other words, the term nutritionist is used for a specialist or expert in nutrition. On the other hand, dieticians are those who have been licensed to operate as registered dieticians. With regard to the variation in the practices of different countries, a person must have a bachelor's degree or a post-graduate degree before he or she can be licensed as a dietician.
Being licensed or certified by the state board is an important requirement before someone can be called a dietician. In contrast, this is not a must for nutritionists once they have their bachelor's degree. Dieticians are trained professionals who can help you with information and practices that will solve your obesity problems. In contrast, nutritionists are ideal professionals who can give proper advice when it comes to a balanced meal and your health.