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TOPIC: What is Oxidative Stress?

What is Oxidative Stress? 08 May 2015 21:50 #358

What is Oxidative Stress?
Posted January 14, 2014 by Dr. Ananya Mandal, MD

Oxidative stress is essentially an imbalance between the production of free radicals and the ability of the body to counteract or detoxify their harmful effects through neutralization by antioxidants.

What are free radicals?

A free radicals is an oxygen containing molecule that has one or more unpaired electrons, making it highly reactive with other molecules.

Oxygen by-products are relatively unreactive but some of these can undergo metabolism within the biological system to give rise to these highly reactive oxidants. Not all reactive oxygen species are harmful to the body. Some of them are useful in killing invading pathogens or microbes.

However, free radicals can chemically interact with cell components such as DNA, protein or lipid and steal their electrons in order to become stabilized. This, in turn, destabilizes the cell component molecules which then seek and steal an electron from another molecule, therefore triggering a large chain of free radical reactions.

Continue reading: http://www.news-medical.net/health/What-is-Oxidative-Stress.aspx
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