##  [Oxidative Stress](/oxidative-stress) 

  ##  [Oxidative Stress](https://health.quantumdictionary.io/oxidative-stress-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A cellular or tissue state in which production of reactive oxygen and/or nitrogen species exceeds the capacity of local antioxidant defenses and repair systems, causing oxidative modification of lipids, proteins, and nucleic acids and altering redox-dependent signaling.