Fuente: "milk OR dairy products" BMJ Nutr Prev Health. 2026 Mar 31;9(1):e001447. doi: 10.1136/bmjnph-2025-001447. eCollection 2026.ABSTRACTBACKGROUND: Dietary patterns that limit or avoid animal products contribute fewer greenhouse gases and require less energy than diets containing more animal products. However, quantifications of these outcomes on a vegan diet in real-life conditions still need to be explored.METHODS: In a randomised controlled trial, a low-fat vegan diet supplemented with soybeans led to a significant reduction in hot flashes in postmenopausal women. In this secondary analysis of that study, we hypothesised that the intervention diet would have a reduced environmental impact, greenhouse gas emissions (GHGEs) and cumulative energy demand (CED). 3-day diet records were analysed at baseline and at the end of the 12-week study, and we linked dietary intakes to environmental footprints.RESULTS: Compared with no change in the omnivorous control group, we found that the vegan group had a decrease in GHGEs (p <0.001) of 35% (-662.7 g CO2-eq/person-day) and a decrease in CED (p =0.002) of 34% (-4956 kJ/person-day). These reductions in environmental impact were primarily due to reduced consumption of meat and dairy products.CONCLUSION: Adoption of a soybean-supplemented low-fat vegan diet significantly reduced cumulative energy demand and GHGEs, important drivers of climate change.TRIAL REGISTRATION NUMBER: NCT04587154.PMID:42534813 | PMC:PMC13422045 | DOI:10.1136/bmjnph-2025-001447