LOS ANGELES (CBS) — Is your healthy diet taking a bite out of your pocketbook?

KNX 1070’s Pete Demetriou says that’s the conclusion of a new study released Thursday by the University of Washington’s School of Public Health.

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Federal guidelines on what to buy and eat to stay healthy can cost a family nearly $400 a year — even for simple things like buying potatoes to get more potassium in your diet or eating only organic or non-genetically modified foods.

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“I eat here because it’s healthier, and yes, it is a little more expensive, but it’s worth it,” said one woman at a Whole Foods Market in Glendale.

The study suggested that the government do more in the way of providing coupons or choices for healthy food.

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But officials concede that would also require changing regulations in some cases which restrict what people can buy with food coupons.