Aging: useless, the antioxidants?
Is it necessary to forget the antioxidants? “It is the question that of the researchers of the McGill University who affirm ask to have discovered that the aging would maybe not be attributable to the oxidization of our cells.
In a survey published recemment1, they throw into question the theory of the oxidative stress. Of 40 years old, she stipulates that the accumulation of particles of oxygen and peroxide. named free radicals – in the cells of our body would prevent them to regenerate, thus contributory to their aging.
For that to make, they used Caenorhabditis elegans, the verses of frequently used in laboratory. They neutralized the capacity of these verses to eliminate the ROS molecules. of the toxic molecules – of their organism.
In principle, this “paralysis” should have dragged a premature death among the invertebrates, because of the strong presence of the ROS molecules, proof of the increase of the oxidative stress in the organism.
However, not only the verses did not die prematurely, but some even lived longer than the verses of no “overcome.”
“In other words, the oxidative stress would be able to just as well to be the result of the aging that his reason”, explain one of the authors of the survey, the Hekima Dr. Siegfried, in a communique.
This conclusion makes him say that the virtues that one lends to the antioxidants to slow down the aging would be overpriced.
Attention to them “mindless messages”
For biochemist Richard Beliveau, the discovery of the researchers of McGill is probably one of interesting scientific point of view. But the one message that underlies “curl the irresponsibility,” says the one that is as titular of the Chair in prevention and treatment of the cancer in the University of Quebec in Montreal (UQAM).
“The concept of aging is not the same, depending on whether one lands it on a systemic level (the set of the physiological functions) or cellular. What is the case of the present survey, he varies.
According to him, this survey does not throw into question the misdemeanors that the oxidative stress can entail in general on health. “The oxidative stress is associated directly to the aging of the cerebral functions as well as to the occurrence of some cardiovascular illnesses, illustrate Richard Beliveau.
Otherwise, he judges the generalization that the researchers make results gotten from invertebrates in laboratory severely. “The verses are useful models of survey, but the humans are not paid. The extrapolations of this kind are always limping,” he throws.
“The antioxidants of plant origin have a positive impact on the overall health and not only on a molecular level. Under the condition to privilege the fruit and the vegetables to the supplements.”
Richard Beliveau
The global health above all
Otherwise, Richard Beliveau gives reason to the researchers of McGill who throw into question the relevance to take supplements of antioxidants, as the vitamin E or coenzyme Q10 to the very strong dose, to warn the aging.
“The supplements of antioxidants do not have an impact on the human health and are not worth the fruits and the vegetables. Whose kindness extensively pass those that bring their antioxidants,” he insists.
According to him, the best way to optimize his global health consists in modifying his habits of life. “It is necessary to avoid the reflex of the crutch that the hold of supplements” constitutes, concludes Richard Beliveau.
Aging: useless, the antioxidants?
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