Free
radicals
Free
radicals are highly reactive molecules that can oxidize and damage essential
bio-molecules such as lipids, proteins, and nucleic acids. In the human body
they have been implicated in the development of many disorders such as
cardiovascular and malignant disease, aging, autoimmune disease, rheumatoid
arthritis, Alzheimer’s disease, cataracts, and Parkinson’s disease. Free
radicals may be from of exogenous origin (smoking, pollution, , x-rays, sunlight:
ozone layer hole facilitates exposition to ultraviolet energy, fats etc..), but
also are constantly produced as a result of normal biological and metabolic
processes: the “oxidative stress”. Furthermore heavy exercise in athletes
increases free radicals formation.
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