A nutritionist is someone whose work is food and how it keeps you well. They may plan meals, read labels with you, or talk about vitamins and illness.

A nutritionist營養師 is someone whose work is food and how it keeps you well是研究食物和食物如何讓你保持健康的人 They may plan meals他們可能會幫你規劃三餐 read labels with you陪你看食品標籤 or talk about vitamins and illness或是跟你談維生素和疾病

The word is made in a simple way: nutrition + -ist, a person who belongs to that field.

The word is made in a simple way這個詞的組成很簡單：nutrition + -ist nutrition（營養）加上 -ist（表示人的字尾） a person who belongs to that field指屬於那個領域的人

In English, though actually, the title is a little loose. In some countries almost anyone can put nutritionist on a card, while dietitian is the title you earn with a licence and hospital training. In Taiwan the licensed professional people meet in a hospital is 營養師, and that job is closer to the strict English dietitian.

In English在英文裡 though actually不過其實 the title is a little loose這個頭銜用得有點鬆散 In some countries在有些國家 almost anyone can put nutritionist on a card幾乎誰都可以在名片上印 nutritionist while dietitian is the title you earn with a licence and hospital training而 dietitian（營養治療師）則是要有證照、受過醫院訓練才能用的頭銜 In Taiwan在台灣 the licensed professional people meet in a hospital你在醫院遇到的有證照的專業人員叫 is 營養師營養師 and that job is closer to the strict English dietitian這個職稱比較接近英文裡嚴格意義的 dietitian

A nutritionist in a gym or on the internet may or may not have that training. The English word only says “someone who deals in nutrition”; it does not, by itself, promise a government licence.

A nutritionist in a gym or on the internet健身房或網路上的 nutritionist may or may not have that training不一定受過那樣的訓練 The English word only says 'someone who deals in nutrition'這個英文字只是說「跟營養有關的人」；it does not, by itself, promise a government licence本身並不保證有政府發的證照

If you need medical advice, you want the trained person, not only the title.

If you need medical advice如果你需要醫療建議 you want the trained person你要找的是受過訓練的人 not only the title而不是只看頭銜