Free radicals are molecules with unpaired electrons. In their quest to find another electron, they are very reactive and cause damage to surrounding molecules (oxidative stress).
Oxidative stress is a general term used to describe the steady state level of oxidative damage in a cell, tissue, or organ, caused by the reactive oxygen species.
Free radicals are like robbers which are deficient in energy. Free radicals attacks and snatch energy from the other cells to satisfy themselves.
Free radicals are formed in the body, and its production is increased when we are exposed to such things as tobacco smoke, alcohol, insecticides, radiation, and even to sunlight. Other causes are a high - fat diet, eating dried foods, or strenuous exercise. It is the free radical production from these sources the we need to be most concerned about. In a simple explanation, FREE RADICALS are responsible for cell damage.
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