الفهرس 
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Abstract
The industrialized countries ara facing among others three majeor challenges to control the cost of health care to offer to thier agin population areal opportunity to live not only longer ,but also better and to provide more ana more busy consumers a choice of healthy processed or ready to eat foods at the same time Progress in the biosciences supports the hypothesis that beyond providing nutrition diet also may modulate various functions in the body that are relevant to health.