Scientists at the University of Colorado Denver found that study participants consumed nearly 187 fewer grammes of snacks per week when given 100kcal snack packs compared to standard size packages of snacks.
Published online this week in Elsevier's Appetite review, researchers also found that initial exposure to portion-controlled packages may well have increased awareness of portion size for the 59 study participants, resulting "in reduced overall consumption, even when larger packages were available", say the scientists.
Do calorie-controlled portion sizes of snacks reduce energy intake?