* shakes/pours tiny bits of crisp from bottom of packet, and burps* … I am neither nutritionist or dietician but:
You need to have a degree in nutrition & dietetics, (or straight dietetics iirc) to become a dietician so if his/her degree is in nutrition, your friend can cross that one off the list unless he/she fancies a further two or three years at university.
I have a friend who is qualified as a dietician but went from “stop smoking specialist” to drug rep. You could make a case to do either of these jobs with a degree in nutrition since many band 5 smoking cessation adviser/officer posts do not necessarily requre a professional registration, and drug rep jobs certainly don’t. 😆
My cousin-in-law is a nutritionist by qualification/trade, but works in public health, doing all sorts of doom and gloom contingency planning for major spillages/contamination/toxicological/ecological disasters.
That there “Dr” Gillian McKeith is a nutritionist, but then she also has the same doctorate that (Medical) Dr Ben Goldacre famously managed to get from the internet for his dog. She’s done alright for money though!