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发布时间:2019-07-26 作者:admin 点击:121

America's packaged food supply is ultra-processed


© Piman Khrutmuang / Adobe Stock

上海译锐翻译   2019-7-26    15:38 p.m.

Americans are overexposed to products that are high in energy, saturated fat, sugar and salt, according to a new Northwestern Medicine study that reports the United States packaged food and beverage supply in 2018 was ultra-processed and generally unhealthy.


saturated fat:饱和脂肪

Since about 80% of Americans' total calorie consumption comes from store-bought foods and beverages (packaged and unpackaged), the food and beverage supply plays a central role in the development of chronic disease including obesity and cardiovascular disease.


chronic disease:慢性病

cardiovascular disease:心血管疾病

The study was published today, July 24, in the journal Nutrients. It aims to provide new information for consumers, researchers and policymakers to encourage food manufacturers to reformulate or replace unhealthy products and to inform the U.S. government on where action may be needed to improve the healthfulness of the U.S. packaged food and beverage supply.


"To say that our food supply is highly processed won't shock anyone, but it's important that we hold food and beverage manufacturers accountable by continually documenting how they're doing in terms of providing healthy foods for consumers," said lead author Abigail Baldridge, a biostatistician in the department of preventive medicine at Northwestern University Feinberg School of Medicine. "And the verdict is they can and should be doing a whole lot better."

文章首席作者,西北大学芬伯格医学院预防医学系的生物统计学家Abigail Baldridge表示:”如果说起我们的食品属于过度加工食品,那么没有人会感到吃惊。但是重要的是,我们应该通过不断将食品和饮料生产商在提供健康食品方面的做法记入档案的方式让他们为健康食品和饮料负责。这样做的结论就是这些食品制造商能够并且应该做的更好。“

As classified by the NOVA Food Classification System developed at the University of Sao Paulo in Brazil, "ultra-processed food and beverages" is the fourth and final group of foods that "are industrial formulations made entirely or mostly from substances extracted from foods (oils, fats, sugar, starch and proteins)." They are derived from hydrogenated fats and modified starch, and are synthesized in laboratories.


The scientists analyzed 230,156 products and, using the NOVA classification system, found 71% of products such as bread, salad dressings, snack foods, sweets, sugary drinks and more were ultra-processed. Among the top 25 manufacturers by sales volume, 86% of products were classified as ultra-processed.


salad dressings:沙拉酱

"Bread and bakery products" was the only category consistently among the highest third across all four nutrient categories in terms of nutrient levels (calories, saturated fat, total sugars and sodium).


Compared to other western countries like Australia, the U.S. food supply is similarly healthy but more processed with higher median sugar and sodium content, the study found.


Dietary guidelines are routinely updated, but no such regular surveillance or reporting on what is available on grocery shelves is available to consumers, researchers or policy makers. Changing the food supply must start with properly assessing it, Baldridge said.


"Food and beverage products continuously evolve, and reports like these highlight opportunities to make critical changes within specific manufacturers or product categories to reduce saturated fat, salt and sugars," Baldridge said.


This evaluation can occur either by manufacturers replacing or reformulating the food and beverage products, Baldridge said.


"Our team has previously shown that breads, in particular, have 12% higher sodium content in the U.S. in comparison to the U.K., where national sodium-reduction strategies have contributed to lowering sodium levels in packaged foods," Baldridge said.


The scientists analyzed data collected by local Chicago company Label Insight, which represents more than 80% of all food and beverage products sold in the U.S. over the past three years.

科学家们对芝加哥当地公司Label Insight所收集的数据进行分析。这些数据代表了美国在过去3年时间内所出售的所有食品和饮料的80%。

Collecting data on the packaged food and beverage supply is difficult because it is so large and about 20% of packaged foods in the U.S. turn over every year, Baldridge said.


"We need to better capture real-time information of our constantly changing food supply if we're going to track and improve its healthfulness," said study co-author Dr. Mark Huffman, the Quentin D. Young Professor of Health Policy, associate professor of preventive medicine and medicine at Feinberg and a Northwestern Medicine cardiologist.

研究的共同作者,Mark Huffman博士、Quentin D.健康政策青年教授、芬伯格医学院预防性药物和药物助教及西北大学医学院心脏病专家表示:“如果我们打算跟踪和改善食品的健康性,我们需要更好地掌握不断变化的食品供应的实时信息。”。

To that end, the study team, including researchers at The George Institute for Global Health in Australia, last summer launched the U.S. version of FoodSwitch, a free mobile phone app that allows consumers to scan packaged foods to determine their healthfulness. If a product doesn't exist in the app's 268,000-product database, then the app asks the user to crowdsource the information by uploading photos of its barcode, nutritional label and packaging to update the app's ever-growing database of foods.



The scientists in this study ranked foods based on their healthfulness number defined by a Health Star Rating system, which scores packaged foods between 0.5 stars (unhealthiest) to 5 stars (healthiest) to provide a quick look at the nutritional profile of packaged foods. They focused specifically on whether products were ultra-processed or not, and compared healthfulness and level of processing product categories and leading manufacturers.


文章来源:科学日报   编辑:Susan