Exams, study halls and stinky dorm rooms—sure those are all not-so-fun aspects of college life. But let’s be honest, the most frustrating near-promise of that first year away from home? The Freshman 15.
Blame all that late-night pizza. Or the stress of school and missing home. Or, you know, the fact that high-school sports give way to co-ed keg-stands. Whatever the reason, those first-year pounds are as predictable as they are pesky—with thousands of students struggling to tug on their skinny-jeans by second semester—and new research says it’s even more predictable than previously realized.
Led by Dartmouth College, the latest research used brain imaging to examine the role that brain reward regions might play in freshman weight gain. The method was simple yet clever: Nearly 50 first-year female students were hooked up to an fMRI (functional magnetic resonance imaging) and then asked to look at photos and note whether there were people included in the photo. The secret? There were food cues embedded into some of the photos, even though the subjects didn’t realize food was the study’s focus at all.
The inherent question then: How would each person’s brain respond to the cues, and could that predict who was likely to gain weight?
The results were fascinating. Nearly every student in the study showed at least some reward response when they ogled the food photos (no surprise there, who doesn’t love to eat?), and the students gained an average of seven pounds in the following six months. The big kicker, however, was that the more the subject’s brain lit up during the food photos, the more weight they gained over that next half year.
A likely reason behind it all? Control issues. Todd Heatherton, lead researcher of the Dartmouth study, hypothesizes that freshmen who are more “wired” to respond to food (like say, that beckoning buffet-style dining hall) will find it more difficult to control their food intake.
“It could be that some people gain weight because their brain reward regions are hyperresponsive and so they are easily tempted, or because they don’t have adequate self-control,” he said. “Our research is trying to answer this question in order to figure out how to help people not give in to temptation.” (Whoever cracks that code, hats off to you.)
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