SEATTLE (AP) A healthy diet is expensive as well as could make it difficult for Americans to meet new U.S. nutritional guidelines, according to a study published Thursday that says a government should do more to help consumers eat healthier.An update of what used to be known as a food pyramid in 2010 had called on Americans to eat more foods containing potassium, dietary fiber, vitamin D as well as calcium. But if they did that, a journal Health Affairs said, they would add hundreds more dollars to their annual grocery bill.Inexpensive ways to add these nutrients to a person's diet include potatoes as well as beans for potassium as well as dietary fiber. But a study found introducing more potassium in a diet is likely to add $380 per year to a average consumer's food costs, pronounced lead researcher Pablo Monsivais, an assistant professor in a Department of Epidemiology as well as a School of Public Health at a University of Washington."We know more than ever about a science of nutrition, as well as yet we have not yet been able to move a needle on healthful eating," he said. The government should provide help for meeting a nutritional guidelines in an affordable way.He criticized some of a marketing for a healthy diet for example, a image of a plate of salmon, leafy greens as well as maybe some rice pilaf as well as pronounced a meal like that is not affordable for many Americans.Food-assistance programs are assisting people make healthier choices by providing coupons to buy fruits as well as vegetables, Monsivais said, but some also put stumbling blocks in front of a poor.He mentioned, as an example, a Washington state policy making it difficult to buy potatoes with food assistance coupons for women with children, even though potatoes are one of a least expensive ways to add potassium to a diet.The study was based on a random telephone survey of about 2,000 adults in King County, Wash., followed by a printed questionnaire that was returned by about 1,300 people. They note what food they ate, whi! ch was a nalyzed for nutrient content as well as estimated cost.People who spend a most on food tend to get a closest to meeting a federal guidelines for potassium, dietary fiber, vitamin D as well as calcium, a study found. Those who spend a least have a lowest intakes of a four recommended nutrients as well as a highest consumption of saturated fat as well as added sugar.Hilary Seligman, assistant professor of medicine at a University of California, San Francisco, pronounced Monsivais' research is an interesting addition to a debate about healthy eating as well as food insecurity, her area of expertise.A lot of people assume a poor eat cheap food because it tastes good, but they would make better choices if they could afford to, pronounced Seligman, who was not involved in a Health Affairs study."Almost 15 percent of households in America say they don't have enough money to eat a way they want to eat," Seligman said. Recent estimates show 49 million Americans make food decisions based on cost, she added."Right now, a huge chunk of America just isn't able to adhere to these guidelines," she said.But Monsivais may have oversimplified a problem, according to another professor who does research in this area. Parke Wilde, compared professor at a Friedman School of Nutrition Science as well as Policy at Tufts University, pronounced it's not expensive to get all a nutrients a body needs to meet a federal guidelines.What is expensive, in Wilde's opinion, are a choices Americans make while getting those nutrients.He pronounced diets get more as well as more expensive depending on how many rules a person relates to himself, such as eating organic or seeking local sources for food or eating vegetables out of season."The longer your list gets, a more expensive your list will be," he said.Seligman pronounced her list can get longer than Wilde's, but not everything is a choice. Adding to a cost of buying healthful food could be how far away from home a person needs to travel to get to a grocery store that sells a variety of ! fresh fr uits as well as vegetables.The government also affects food prices through a subsidies offered to farmers growing certain crops, she added.