(28-10-15) Eating quickly positively associated with excess body weight

  
as presented at the Annual Congress of the European Association for the Study of Diabetes
Eating quickly is positively associated with excess body weight, according to a study presented at EASD, held in September in Stockholm. 
Because the influence of eating rate on obesity remains inconclusive despite several epidemiologic studies, Japanese investigators undertook a systematic review with a meta-analysis of published epidemiological studies to provide a reliable estimate of the association between eating rate and obesity. 
Twenty-three published studies were eligible for inclusion, of which 20 were cross-sectional, two were longitudinal,  and one provided results from both study designs. Twenty- one crossectional studies were included in the meta-analysis. According to the Japanese researchers’ data, the mean difference in BMIs between individuals who ate quickly and those who ate slowly was 1.78 kg/m2. The pooled odds ratio (OR) of eating quickly on the presence of obesity was 2.15. 
There was evidence of significant quantitative heterogeneity in the magnitudes of the association across studies (I2=78.4%; P for heterogeneity <0.001 for BMI, I2=71.9%; P value for heterogeneity <0.001 for obesity), which may be partially explained by differences in the type of study population (a weaker association was observed for BMI in individuals with diabetes than in those without; mean difference 1.32 kg/m2 vs mean difference 1.89 kg/m2, respectively; P value for heterogeneity = 0.038). Three longitudinal studies also showed that a faster eating rate was associated with increased BMI and a higher risk of incident obesity over time. 
“Although further studies are needed to conclude a causal relationship between eating rate and obesity, more emphasis may be placed in clinical practice on slowing the speed of eating,” the Japanese investigators concluded.

Source: univadis.it

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