Showing posts with label Oxidation. Show all posts
Showing posts with label Oxidation. Show all posts

Tuesday, January 17, 2012

Understanding Antioxidants and Free Radicals


Everyone talks about antioxidants and free radicals, but what are they and how do they really work? Oxidation occurs when oxygen is exposed to cells and causes them to change. A real life example would be when oxygen hits an apple slice and it turns brown. Our bodies typically use oxygen in an efficient way, but sometimes cells get harmed in the process and free radicals are created.

Free radicals are unstable oxygen molecules that often collide with other cells and cause interference with normal cell functioning. They are considered free because they are missing an important molecule (electron) which sends them on a desperate journey to gain stability with nearby stable molecules. This sometimes causes a chain reaction and can result in the disruption of a living cell and ultimately cause DNA damage. Free radicals are also created from environmental pollution, smoke from cigarettes, radiation and other chemicals. The resulting oxidation is linked to a variety of health problems such as cancer, diabetes, macular degeneration and heart disease.

How Antioxidants Work