Definition of chronic energy deficiency in adults. Report of a working party of the International Dietary Energy Consultative Group.
New criteria are proposed for classifying chronic energy deficiency (CED) in adults. A progressively more precise approach to identifying affected individuals involves measuring body weight and height, then energy intake (or expenditure) and finally the basal metabolic rate (BMR). Three cut-off points for body mass index (BMI) were identified: 18.5, 17.0 and 16.0. A BMI above 18.5 is classified as normal and below 16.0 as grade III CED. A diagnosis of grades I and II CED depends on finding the combination of a BMI of 16.0-16.9 or 17.0-18.4 with a ratio of energy turnover to predicted BMR of less than 1.4. Measuring the individual BMR avoids misclassification and confirms the diagnosis. In groups of African adults 38-63 per cent of each group had a BMI below 18.5 and the majority require studies of their energy turnover before specifying their degree of CED; 3 per cent of Ethiopian women and 24 per cent of a selected male African group had grade III CED. These guidelines can be used when assessing the input of aid programmes and for clinical and other studies.
James
W P
WP
Rowett Research Institute, Aberdeen, UK.
Ferro-Luzzi
A
A
Waterlow
J C
JC
D000273:Adipose Tissue / Q000033:anatomy & histology; D000328:Adult; D001481:Basal Metabolism; D001827:Body Height; D001835:Body Weight; D002908:Chronic Disease; D003677:Deficiency Diseases / Q000175:diagnosis* / Q000378:metabolism; D004734:Energy Metabolism; D005260:Female; D006801:Humans; D008297:Male; D011502:Protein-Energy Malnutrition / Q000175:diagnosis* / Q000378:metabolism; D009626:Terminology as Topic