000			03150nab a22003257a 4500
001			68040
003			MX-TxCIM
005			20250729092259.0
008			241031s1975 -us|||po p||| 00| 0 eng d
022			_a0002-9165
022			_a1938-3207 (Online)
024	8		_ahttps://doi.org/10.1093/ajcn/28.3.281
040			_aMX-TxCIM
041			_aeng
100	1		_aPayne, P.R. _937027
245	1	0	_aSafe protein-calorie ratios in diets. _bThe relative importance of protein and energy intake as causal factors in malnutrition
260			_aUnited States of America : _bAmerican Society for Nutrition ; _bElsevier B.V., _c1975.
500			_aPeer review
520			_aThere has been up to now a lack of agreement as to the way in which protein and energy requirements could be combined to give estimates of adequate dietary protein-energy ratios. In particular, the relevance of the simple ratio, average protein--average energy requirement as a basis for assessing diets, has been questioned on the grounds that it fails to take account of individual variability in needs for energy, and of the extent to which these may be independent of variability in protein requirements. The main problem is to evaluate the range over which individuals can adapt either energy intake to suit expenditure, or expenditure to suit intake, without detriment to health or growth. One solution adopted by Beaton and Swiss in a recent paper is to accept the range of observed variability of energy intakes in normal populations as a measure of this. An alterative is to make use of experimental evidence for the minimum energy intake for maintenance of body energy content. These two approaches are compared, and are shown to give quantitatively similar results. The method based on minimum maintenance requirements offers the further advantage that it allows an assessment of dietary situations in relation to the likelihood of occurrence of different forms of protein--energy malnutrition; those situations in which protein deficiency is a secondary consequence of low energy intake are differentiated from those in which the primary cause is an inadequate level of protein in the diet. The adequate "safe" level of protein-energy ratio in the diets of 2- to 3-year old children is close to 5% and since most varieties of cereal grains appear to provide utilizable protein levels of close to this amount, this lends further support to the view that primary protein deficiency is unlikely to be the main factor causing protein-energy malnutrition in communities for which cereals are the cheapest source of energy.
546			_aText in English
650		7	_aProtein content _2AGROVOC _91222
650		7	_aDiet quality _2AGROVOC _930395
650		7	_aNutritive value _2AGROVOC _91193
650		7	_aNutrient intake _2AGROVOC _98188
650		7	_aFactors _2AGROVOC _96339
650		7	_aMalnutrition _2AGROVOC _96463
650		7	_aProtein deficiencies _2AGROVOC _937028
773	0		_dUnited States of America : American Society for Nutrition ; Elsevier B.V., 1975. _gv. 28, no. 3, p. 281-286 _tAmerican Journal of Clinical Nutrition _wG94930 _x1938-3207
942			_2ddc _cJA _n0
999			_c68040 _d68032