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...Health policy forum public nutrition the need to define optimal intake as a basis for decisions emstl wynder md john h weisburger phd hc and stephen k ng drph introduction cestors their eat food became there has been much controversy available during day s activities re towhetherdietaryfactors affect riskof sulted in grazing eating pattern various chronic diseases notably meanwhile physiologic processes kinds of cancer we propose that di human body most likely have not verse sometimes conflicting results from changed or adapted biologically thou retrospective prospective studies may sands perhaps hundreds ofthousands be associated with unavoidable measure years our metabolic are no dif ment errors nutritional assessment ferent those ofour prehistoric ances well homogeneous dietary habits tors determined largely by existing among populations is clearly an environment over last since duced disease risk especially agricultural revolution regards cardiovascular massive physical activity ca...