Center for Public Health Nutrition, University of Washington, Seattle, WA 98195, USA.
Centro de Investigación e Inteligencia Económica, Universidad Popular Autónoma del Estado de Puebla (UPAEP), Puebla 72410, Mexico.
Nutrients. 2022 Oct 12;14(20):4256. doi: 10.3390/nu14204256.
Affordable nutrient density is provided by low-cost and nutrient-rich foods. We explored nutrient density, cost, and NOVA category assignments within and across food groups in Brazil. The nutrient density of the foods ( = 591) was assessed using the Nutrient Rich Food Index (NRF9.3) based on protein, fiber, vitamin A (RAE), vitamin C, vitamin E (mg), Ca, Fe, K and Mg; and NRF6.3 score for priority nutrients: Ca, Fe, Zn, vitamin A, vitamin B12, and folate. Nutrients to limit (LIM) were saturated fat, added sugar, and sodium. Affordability was defined as the ratio of energy and/or nutrient density of foods and retail price per 100 kcal. Foods were classified as minimally processed ( = 106), processed ( = 188), ultra-processed ( = 286), and culinary ingredients ( = 11). Nutrient density was positively linked to per 100 kcal food cost. Ultra-processed foods (UPF) contained more energy, fat, sugar, and salt and had lower NRF scores compared to minimally processed (MPF) foods. UPF was also less expensive than MPF foods. Nutrient-rich foods below the median per 100 kcal costs included MPF foods, but also processed foods (PF) and UPF. Affordable nutrient-rich foods can be found in the different categories of the NOVA classification.
可负担的营养密度是由低成本和营养丰富的食物提供的。我们探索了巴西食物组内和组间的营养密度、成本和 NOVA 类别分配。使用基于蛋白质、纤维、视黄醇当量 (RAE)、维生素 C、维生素 E (mg)、钙、铁、钾和镁的营养丰富食品指数 (NRF9.3) 和针对优先营养素的 NRF6.3 评分(钙、铁、锌、维生素 A、维生素 B12 和叶酸)评估食物的营养密度。需要限制的营养素(LIM)为饱和脂肪、添加糖和钠。可负担性定义为食物的能量和/或营养密度与每 100 千卡的零售价格之比。食物被分为最低限度加工(= 106)、加工(= 188)、超加工(= 286)和烹饪原料(= 11)。营养密度与每 100 千卡食物成本呈正相关。与最低限度加工食品(MPF)相比,超加工食品(UPF)含有更多的能量、脂肪、糖和盐,且 NRF 评分较低。此外,与 MPF 食品相比,UPF 也更便宜。每 100 千卡成本中位数以下的营养丰富的食物包括最低限度加工食品(MPF),但也包括加工食品(PF)和超加工食品(UPF)。在 NOVA 分类的不同类别中可以找到负担得起的营养丰富的食物。