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- Title
Associations between the intake of dairy fat and calcium and abdominal obesity.
- Authors
Rosell, M.; Johansson, G.; Berglund, L.; Vessby, B.; de Faire, U.; Hellénius, M.-L.
- Abstract
OBJECTIVE:: This study evaluates the association between abdominal obesity and the intake of dairy fat and calcium using information from dietary data and the relative content of the fatty acids 14:0, 15:0, and 17?:?0 in serum phospholipids (PL) and adipose tissue (AT), which are suggested biological markers for dairy fat intake. This study also explores how the associations were affected when under-reporters (URs) were separated from the analyses. DESIGN:: Cross-sectional study. SUBJECTS:: In all, 301 healthy 63-y-old men with different degrees of fasting-insulin concentrations. METHODS:: Sagittal abdominal obesity (SAD), dietary intake assessed by a 7-day food registration, and the fatty acid composition in serum PL and AT were measured. URs (n=88) and non-under-reporters (non-URs, n=213) were identified by Goldberg's equation, which compares energy intake with energy expenditure, both expressed as multiples of the basal metabolic rate. RESULTS:: The intake of dairy fat, expressed as g/100?g fat, was inversely correlated with SAD; however, this association was only observed in the URs (r=-0.36, P=0.001) and not in the non-URs (r=-0.04, P=0.59). The intake of calcium was inversely correlated with SAD in both groups, although the association was weaker in the non-URs. The intake of dairy fat was related to the relative content of the fatty acids 14:0, 15:0, and 17?:?0 in serum PL and AT (r ranging between 0.32 and 0.55). When these fatty acids were correlated to SAD, inverse associations were seen except for 14:0 in PL (r ranging between-0.17 and-0.29. CONCLUSION:: If there is a true inverse association between the intake of dairy fat and SAD, it remains to explain why this association was not seen in the non-URs. The data gave some indications of an inverse association between SAD and the intake of calcium. The diverse findings observed when the URs and non-URs were separated highlight the question of how to use and interpret dietary data in URs when diet-disease relationships are investigated.International Journal of Obesity (2004) 28, 1427-1434. doi:10.1038/sj.ijo.0802769 Published online 24 August 2004
- Subjects
OBESITY; CARBOXYLIC acids; FATTY acids; PROINSULIN; OLDER men; BODY weight
- Publication
International Journal of Obesity & Related Metabolic Disorders, 2004, Vol 28, Issue 11, p1427
- ISSN
0307-0565
- Publication type
Article
- DOI
10.1038/sj.ijo.0802769