Portion size: review and framework for interventions.
The prevalence of overweight and obesity has increased. A strong environmental factor contributing to the obesity epidemic is food portion size. This review of studies into the effects of portion size on energy intake shows that increased food portion sizes lead to increased energy intake levels. Important mechanisms explaining why larger portions are attractive and lead to higher intake levels are value for money and portion distortion. This review also shows that few intervention studies aiming to reverse the negative influence of portion size have been conducted thus far, and the ones that have been conducted show mixed effects. More intervention studies targeted at portion size are urgently needed. Opportunities for further interventions are identified and a framework for portion size interventions is proposed. Opportunities for intervention include those targeted at the individual as well as those targeted at the physical, economic, political and socio-cultural environment.
Steenhuis
Ingrid Hm
IH
VU University, Department of Health Sciences and EMGO+ Institute for Health and Care Research, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands. ingrid.steenhuis@falw.vu.nl.
Vermeer
Willemijn M
WM
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