What causes free radicals to form?

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  1.  Emilia Klapp
     
    Emilia Klapp answered:
    Some free radicals form naturally during bodily functions such as breathing, eating, and drinking. Others form because of cigarette smoke, overexposure to smog or sunlight, radiation, excessive exercise, and other factors.
    More Related Answers from Emilia Klapp
    Some free radicals form naturally during bodily functions such as breathing, eating, and drinking. Others form because of cigarette smoke, overexposure to smog or sunlight, radiation, excessive exercise, and other factors. More