There are many natural substances present in natural foods that are potent antioxidants like alpha-lipoic acid, quercetin, coenzyme Q10, etc. Some of the commonly used food items and the antioxidants present in them are:
Turmeric Curcuminoids
Green tea Catechins
Grape seeds Cyanidins
Reishi mushrooms Triterpenes

This is new information for me, Hmm should try some more
search on it, i have one confusion hope i will cure them as
well.

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Carson