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Robinson, E, McFarland-Lesser, I, Patel, Z and Jones, A (2022) Downsizing food: A systematic review and meta-analysis examining the effect of reducing served food portion sizes on daily energy intake and body weight. British Journal of Nutrition. pp. 1-16. ISSN 0007-1145
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Abstract
Portion sizes of many foods have increased over time. However, the size of effect that reducing food portion sizes has on daily energy intake and body weight is less clear. We used systematic review methodology to identify eligible articles that used an experimental design to manipulate portion size served to human participants and measured energy intake for a minimum of one day. Searches were conducted in September 2020 and again in October 2021. Fourteen eligible studies contributing 85 effects were included in the primary meta-analysis. There was a moderate-to-large reduction in daily energy intake when comparing smaller vs. larger portions (SMD = -.709 [95% CI: -.956 to -.461], 1/4235kcal). Larger reductions to portion size resulted in larger decreases in daily energy intake. There was evidence of a curvilinear relationship between portion size and daily energy intake; reductions to daily energy intake were markedly smaller when reducing portion size from very large portions. In a subset of studies that measured body weight (4 studies contributing 5 comparisons), being served smaller vs. larger portions was associated with less weight gain (0.58kg). Reducing food portion sizes may be an effective population level strategy to prevent weight gain.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Energy intake; Food reformulation; Obesity; Portion size; Weight loss; 0702 Animal Production; 0908 Food Sciences; 1111 Nutrition and Dietetics; Nutrition & Dietetics |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology T Technology > TX Home economics > TX341 Nutrition. Foods and food supply R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine |
| Divisions: | Pharmacy & Biomolecular Sciences |
| Publisher: | Cambridge University Press |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 14 Sep 2022 08:29 |
| Last Modified: | 14 Sep 2022 08:30 |
| DOI or ID number: | 10.1017/S0007114522000903 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/17553 |
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