Recently the President released his long-form birth certificate to show everyone, perhaps especially those birthers gone berserk, that he’s an American born in America who belongs in the White House. On a day-to-day basis, desis in the U.S. are not being asked to pull out their long-forms (not yet anyway), but are there other ways in which we’re made to feel that we have to prove we belong, that we’re American? New research from psychologists seems to address this question with a particular focus on the food choices of immigrant groups–“Fitting In but Getting Fat: Identity Threat and Dietary Choices among U.S. Immigrant Groups.”

Psychologists show that it’s not simply the abundance of high-calorie American junk food that causes weight gain. Instead, members of U.S. immigrant groups choose typical American dishes as a way to show that they belong and to prove their American-ness.

“People who feel like they need to prove they belong in a culture will change their habits in an attempt to fit in,” said Sapna Cheryan, corresponding author and an assistant professor of psychology at the University of Washington. “If immigrants and their children choose unhealthy American foods over healthier traditional foods across their lives, this process of fitting in could lead to poorer health,” she said.

The results are published in the June issue of Psychological Science.

Public health studies show that diets of immigrants, including those from Asia, Africa and Central and South America worsen the longer they stay in the United States. (press release)

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