How Much Is Enough?

What constitutes a normal portion size to one person might be substantially less to another. This might help explain why consumers, as a group, don't trust food packaging portion sizes to be accurate. A study of 1,067 adults conducted in April 2009 by IGD Research found that, while most consumers appreciated having portion size information printed on packaging, 36% ignored it and 38% ate what they felt was the right portion regardless of what it said on the label.

The Bigger Picture: According to this research, 48% of the subject group let their own experience dictate how much they consumed. Lacking a fact-based yard stick to measure calorie consumption, this approach leaves the door open to overeating. That's especially true for fast eaters, because your brain's satiety mechanism does not kick in for 10 to 15 minutes after your stomach is full.
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