fight off/against

quietdandelion

Banned
Formosa/Chinese
Our body can naturally fight off/against many diseases.


Both fight off and fight against many diseases sound good to me here, but I don't know what differences they make.
If I omit off and against here, fight many diseases still sounds good. Yet, does it change the meaning of the sentence? Thanks.
 
  • EkatS

    Member
    United States/English
    The meanings are different:
    Our body can fight off many deseases = Our body prevents many deseases from ever developing in it.

    Our body can fight (against) many deseases = Our body reacts to the deseases that have already infected it.
     
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