title: Associations of dietary glycaemic index and glycaemic load with food and nutrient intake and general and central obesity in British adults.
abstract: Inconsistent associations between dietary glycaemic index (GI) and glycaemic load (GL) and body fatness may be partly due to differences in the underlying dietary patterns or energy under-reporting. In the present study, we examined the cross-sectional associations of dietary GI and GL with food and nutrient intake and general and central obesity, accounting for energy under-reporting. The subjects were 1487 British adults aged 19-64 years. Dietary intake was assessed using a 7 d weighed dietary record. Breads and potatoes were the positive predictive foods for dietary GI, while fruit, other cereals and dairy products were the negative predictors. These foods were similarly identified in the analysis of only acceptable reporters (AR; ratio of reported energy intake:estimated energy requirement within 0·665-1·335) and under-reporters (UR; ratio < 0·665). Dietary GL was closely correlated with carbohydrate intake. Multiple linear regression analyses showed that dietary GI was independently associated with a higher risk of general obesity (BMI ≥ 30 kg/m²) and central obesity (waist circumference ≥ 102 cm in men and ≥ 88 cm in women). Dietary GL was also associated with general (only women) and central obesity. Similarly, in the analysis of AR, the GI showed positive associations with general and central obesity, and, only in women, the GL showed positive associations with general and central obesity. Conversely, in the analysis of UR, the associations were generally weaker and many of them failed to reach statistical significance. In conclusion, we found independent positive associations of dietary GI and GL with general and central obesity in British adults.
authors: Northern Ireland Centre for Food and Health (NICHE), University of Ulster, Cromore Road, Coleraine BT52 1SA, UK.
authors: Kentaro
authors: K
authors: Murakami
authors: Tracy A
authors: TA
authors: McCaffrey
authors: M Barbara E
authors: MB
authors: Livingstone
mesh_terms: D000328:Adult; D015992:Body Mass Index; D001939:Bread / Q000009:adverse effects / Q000032:analysis; D003430:Cross-Sectional Studies; D004032:Diet / Q000009:adverse effects*; D015930:Diet Records; D004040:Dietary Carbohydrates / Q000008:administration & dosage* / Q000009:adverse effects / Q000032:analysis; D005260:Female; D038321:Glycemic Index; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology / Q000209:etiology*; D056128:Obesity, Abdominal / Q000453:epidemiology / Q000209:etiology*; D035281:Plant Tubers / Q000009:adverse effects / Q000737:chemistry; D015995:Prevalence; D012306:Risk; D012737:Sex Factors; D011198:Solanum tuberosum / Q000009:adverse effects / Q000737:chemistry; D006113:United Kingdom / Q000453:epidemiology; D055105:Waist Circumference; D055815:Young Adult
chemical_list: D004040:Dietary Carbohydrates