system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the difference between what dietitians do and what nutritionists do?
gpt
Dieticians have to be licensed to use the labels RD or RDN, much like being an RN or an MD.  Nutritionists don't.

Nutritionists may have a lot of knowledge and be a big help or they may just be some weirdo who thinks kale is magic and gluten is the devil.  If you wind up on a structured diet in a hospital, for example, you WILL be working with a dietician, not a nutritionist.