How does portion size affect how much I eat?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Research has found that people given larger portions simply eat or drink more. For example:
  • People given larger portion sizes of food eat approximately 20% to 50% more, without reducing intake at later meals.
  • People eating soup from self-refilling bowls ate 73% more than those who ate from regular bowls.
  • Women given beverages 50% larger than those given to another group consumed 20% more; men consumed 33% more. There was no decrease in food consumed in this group.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.