What are free radicals?

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Free radicals are molecules which, having an unpaired electron in the orbital outermost, are particularly unstable: to “recover” the unpaired electron and return to their stable form, the free radicals react with other molecules triggering chain reactions in which are formed continually new radicals.

In normal conditions, the amount of free radicals is proportional to that of the antioxidants, substances able to stop the reactions leading to the formation of these reactive molecules. However, in some cases, such as in the presence of inflammatory conditions or in the presence of external sources, including atmospheric pollutants, drugs, ultraviolet rays, diets high in animal fat and toxic chemicals, this balance is less. This establishes a condition of oxidative stress that, in addition to determining the premature aging of the skin, damage the cell, reduces the exchange between the cell membranes and the outside and destroys the membrane lipids, sugars, proteins and DNA.


The advice and suggestions provided through this service do not address to a problem of medical nature; it is only indicative and does not consider any particular situation. The advice and the answers provided are not a substitute in any way medical advice which should always be consulted for any questions or needs.