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Antioxidants that are reducing agents can also act as pro-oxidants. For example, vitamin C has antioxidant activity when it reduces oxidizing substances such as hydrogen peroxide; [92] however, it will also reduce metal ions such as iron and copper [93] that generate free radicals through the Fenton reaction.
Antioxidants are reducing agents, and limit oxidative damage to biological structures by passivating them from free radicals. [ 4 ] Strictly speaking, the free radical theory is only concerned with free radicals such as superoxide ( O 2 − ), but it has since been expanded to encompass oxidative damage from other reactive oxygen species (ROS ...
Carotenoids lutein and zeaxanthin, found in the yolk of chicken eggs, have been shown to reduce the risk of cataracts and macular degeneration, the leading causes of blindness in people 55 and older.
Vitamins that are reducing agents can be pro-oxidants. Vitamin C has antioxidant activity when it reduces oxidizing substances such as hydrogen peroxide, [6] however, it can also reduce metal ions which leads to the generation of free radicals through the Fenton reaction. [7] [8] 2 Fe 2+ + 2 H 2 O 2 → 2 Fe 3+ + 2 OH· + 2 OH −
The healthy fat contains antioxidants touted for reducing the risk of chronic health conditions and heart disease. Olive oil can also combat oxidative stress , which harms brain health and can ...
These colorful antioxidants support eye health and may reduce the risk of cancer. “Be sure to eat these foods with their skins on, as the biggest quantity is found within the skins of these ...