Portion size: cause and solution to overweight and obesity?
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Getting portion sizes right is an important part of a healthy and balanced diet.
By Professor Eric Robinson, University of Liverpool
Getting portion sizes right is an important part of a healthy and balanced diet.
The causes of obesity are complex, but overconsumption of food and sugary drinks is a key direct determinant, driven in part by large portion sizes. Recent research conducted at the University of Liverpool suggests that portion sizes may not only contribute to overweight and obesity but also may be part of the possible solution.
Survey data estimates that between 1980 and 2019, the prevalence of obesity in England increased from 6% to 27% in men and 9% to 29% in women. At the same time portion sizes of many foods served at home and out of the home have increased, pointing to the possibility that larger portions may have played a contributory role in rising obesity.
To tease apart what kind of impact this is likely to have had on diets several studies have examined the rel...
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