By J. N. R. Jeffers (auth.), Sir Kenneth Blaxter (eds.)
The function of the 3rd symposium organised by way of the Advisory Committee on food and Crop Husbandry _of the Rank Prize cash used to be to discover in a few intensity the complicated methods wherein natural and inorganic fabrics succeed in man's nutrition, paying specific attenti
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It is appropriate therefore to understand the basis of published tables of energy requirements. 0005GNP a a Natharlanda Intake ~rnent a Finland aJapen 3000 aUK. a a FIG. I. Energy intakes and gross national product. The energy intakes are strictly food moving into consumption, and are expressed as a percentage of requirements (source: FAD, 1974). The gross national product is expressed as $/head/year (source: DECO, 1974). a Tanzania • Algaria • a a 80 II 110 120 130 a Eire MAN'S DEMAND FOR ENERGY 25 ASSESSMENT OF ENERGY REQUIREMENTS Essentially there are three possible approaches: Intake and health risk If the relationship between intake and health were known it would be possible to choose an optimum intake at minimum risk.
He agreed with Dr Cuthbertson that food production in the developing countries could be improved enormously and that subsistence farmers were indeed highly intelligent. The problem was that they were not normally motivated to increase yield for some hypothetical market but rather to reduce risk. The success or failure of a crop was a life or death situation for such men and their families. He did, however, return to the point that the land resources of the world appeared to be sufficient and that with present technology this land could be made to yield considerable energy for man.
But some countries in both groups do better than others. The Swedes and the Japanese apparently exercise more restraint on their appetites than for example the Irish and the Americans: the inhabitants of Eire have the highest food consumption of all. Whether the restraint of the Swedes is due TABLE 9 THE RETAIL COST OF FOOD IN RELATION TO INTAKE (SOURCE: QUERESHI, R. , UNPUBLISHED DATA) Country GNP Cost of meeting energy requirement Energy intake as a percentage of requirement 16 101 105 99 % GNP Sri Lanka Thailand Pakistan India Nepal Indonesia Bangladesh 250 380 170 150 120 240 110 19 38 45 50 61 72 93 93 89 to nutrition education is not clear, but the low intakes in Japan are probably due to their bulky diet.