Diet affordability: a key dimension in the assessment of sustainable food systems and healthy diets
| dc.citation.volume | 11 | |
| dc.contributor.author | Chungchunlam SMS | |
| dc.contributor.author | Moughan PJ | |
| dc.contributor.editor | Raubenheimer D | |
| dc.date.accessioned | 2024-10-24T00:27:17Z | |
| dc.date.available | 2024-10-24T00:27:17Z | |
| dc.date.issued | 2024-08-12 | |
| dc.description.abstract | A promulgated global shift toward a plant-based diet is largely in response to a perceived negative environmental impact of animal food production, but the nutritional adequacy and economic implications of plant-sourced sustainable healthy dietary patterns need to be considered. This paper reviews recent modeling studies using Linear Programming to determine the respective roles of animal- and plant-sourced foods in developing a least-cost diet in the United States and New Zealand. In both economies, least-cost diets were found to include animal-based foods, such as milk, eggs, fish, and seafood, to meet the energy and nutrient requirements of healthy adults at the lowest retail cost. To model a solely plant-based least-cost diet, the prevailing costs of all animal-sourced foods had to be increased by 1.1 to 11.5 times their original retail prices. This led to the inclusion of fortified plant-based foods, such as fortified soymilk, and a plant-based diet that was considerably (34–45%) more costly. The first-limiting essential nutrients were mostly the vitamins and minerals, with special focus on pantothenic acid, zinc, and vitamin B-12, when transitioning from an animal- and plant-containing least-cost diet to a plant-only based least-cost diet. Modeled least-cost diets based on contemporary food costs include animal-sourced foods, at least for developed high-income US and NZ food economies, and potentially for developing low- and middle-income countries, such as Indonesia. Modeling of least-cost diets that consist exclusively of plant-based foods is feasible, but at a higher daily diet cost, and these diets are often close to limiting for several key nutrients. Diet affordability, as a key dimension of sustainable healthy diets, and the respective economic roles of animal- and plant-sourced foods need to be considered. | |
| dc.description.confidential | false | |
| dc.identifier.citation | Chungchunlam SMS, Moughan PJ. (2024). Diet affordability: a key dimension in the assessment of sustainable food systems and healthy diets. Frontiers in Nutrition. 11. | |
| dc.identifier.doi | 10.3389/fnut.2024.1399019 | |
| dc.identifier.eissn | 2296-861X | |
| dc.identifier.elements-type | journal-article | |
| dc.identifier.number | 1399019. | |
| dc.identifier.uri | https://mro.massey.ac.nz/handle/10179/71842 | |
| dc.language | English | |
| dc.publisher | Frontiers Media S.A. | |
| dc.publisher.uri | https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1399019/full | |
| dc.relation.isPartOf | Frontiers in Nutrition | |
| dc.rights | (c) 2024 The Author/s | |
| dc.rights | CC BY 4.0 | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | diet cost | |
| dc.subject | diet optimization model | |
| dc.subject | linear programming (LP) | |
| dc.subject | nutrient adequacy | |
| dc.subject | adult | |
| dc.subject | protein | |
| dc.subject | animal-source foods (ASF) | |
| dc.subject | plant-based food (PBF) | |
| dc.title | Diet affordability: a key dimension in the assessment of sustainable food systems and healthy diets | |
| dc.type | Journal article | |
| pubs.elements-id | 491457 | |
| pubs.organisational-group | Other |