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(Medical Xpress) — In a new study published in PLoS Medicine, researchers have shown that it is not only the American habit of “super-sizing” meals that is leading to obesity, but the number of snacks and meals that are being eaten throughout the day.

The study, led by professor of nutrition Barry Popkin from the University of North Carolina, looked at data from food studies conducted as far back as the 1970s and discovered that Americans have increased their daily caloric intake. In 1977~1978, Americans were consuming on average 1, 803 kcal an d in 2003~2006 that number had jumped up to 2, 374.