Take the 2-minute tour ×
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It's 100% free, no registration required.

A diet rich in anti-oxidants, which, a number of nutritionists claim, may help to strengthen the immune system.

Is "which" necessary or why not?

share|improve this question

closed as off-topic by starsplusplus, jimsug, Em1, Chenmunka, FumbleFingers Jul 21 at 13:21

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Proofreading questions are off-topic unless a specific source of concern in the text is clearly identified. See: Alternative websites for proofreading" – starsplusplus, jimsug, Em1, Chenmunka, FumbleFingers
If this question can be reworded to fit the rules in the help center, please edit the question.

    
Is it intended to be a complete sentence or a noun phrase? –  snailboat Jul 21 at 0:32
    
Do you have a source? Not sure if it is proper writing style, but if you are trying to emphasize the pauses in speech, it seems OK. Otherwise leave out the comma after which. –  user3169 Jul 21 at 0:42
1  
@user3169 The commas are setting off the parenthetical a number of nutritionists claim from which may help to strengthen the immune system. –  snailboat Jul 21 at 0:57
    
@user3169 You can't delete the comma before a number of nutritionists claim but leave the one after. Grammatically you must have both or neither. –  starsplusplus Jul 21 at 2:31
    
Did you find this sentence, or did you compose it? Please provide the source if you found it somewhere, as the text before it is highly relevant, particularly if this is not the entire sentence. –  jimsug Jul 21 at 4:38

1 Answer 1

up vote 4 down vote accepted

If you leave out "which", the sentence makes sense.

With "which" present, it is grammatically incorrect. It needs a further phrase after "the immune system".

e.g. A diet rich in anti-oxidants, which a number of nutritionists claim may help to strengthen the immune system, can be easily achieved by drinking copious amounts of red wine.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.