That jumbo slice of pizza is more than one serving, but try telling that to a hungry guy. We tend to be way off when figuring out true portion sizes, especially for certain foods, a new study in the journal Appetite shows.
In the study, dozens of meals, snacks, and drinks were placed in front of male and female college students who then had to guess the amount of servings they were seeing. Men were worse at estimating true portion sizes than women, and foods known to add inches to your belly like sugary drinks, pizza, and pasta were underestimated by about 30 to 46 percent. That extra pizza could equal an extra 360 calories in your diet, the researchers write.
See how the participants' serving estimates of various foods matched up with reality in the chart below, then discover the best way to accurately predict a serving size for a variety of everyday foods.
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