Have you ever felt guilty after downing a savory dish you knew to be bad for your health? I sure have. Science proves, however, that while traditional notions of dietary nutrition play an important role in determining the impact of a meal on your health, these chemical factors account for only half of the equation dictating how food affects your body. Contrary to conventional wisdom, your perceptions about the nutritional value of your diet actually drive the other half of the nutritional equation.

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