By normal situations free radicals don´t have to be considered as enemies. Their presence is fundamental in metabolic and immunitary processes; in order to trigger defence mechanisms against bacterium and others
pathogenes. An healthy body keeps under control, through an antioxidant system, Free Radicals balance.
When Free Radicals presence is not controlled and major than physiological requirements, oxidative stress occurs: premature aging, arteriosclerosis, osteoporosis, heart-attack, stroke, overweight, diabetes, arthritis, joints and muscles´ pains.