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Feb 29

Red meat cuts can benefit the climate and your lifespan – Futurity: Research News

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Researchers have found evidence that partially replacing red and processed meat with plant protein foods can increase lifespan and mitigate climate change.

Importantly, the new study also suggests that benefits depend on the type of animal protein being replaced.

The study drew data from a national nutrition survey to analyze Canadians dietary records. The study modeled partial replacements (25% and 50%) of either red and processed meat or dairy with plant protein foods like nuts, seeds, legumes, tofu, and fortified soy beverages, on a combination of nutrition, health, and climate outcomes.

Red and processed meat and dairy are the primary contributors to Canadas diet-related greenhouse gas emissions, as evidenced in a previous study. Remarkably, this study found a persons diet-related carbon footprint plummets by 25% when they replace half of their intake of red and processed meats with plant protein foods. On the other hand, dairy substitutions showed smaller reductions of up to 5%.

We show that cobenefits for human and planetary health do not necessarily require wholesale changes to diets, such as adopting restrictive dietary patterns or excluding certain food groups altogether but can be achieved by making simple partial substitutions of red and processed meat, in particular, with plant protein foods, explains Olivia Auclair, first author and recent PhD graduate in McGill Universitys animal science department.

Diets high in animal products are known to increase the risk of heart disease, diabetes, and certain cancers. In the new study, researchers estimated that if half of the red and processed meat in a persons diet was replaced with plant protein foods, they could live on average, nearly nine months longer, stemming from a reduced risk of chronic disease.

When broken down by sex, males stand to gain more by making the switch, with the gain in life expectancy doubling that for females. In contrast, partially replacing dairy with plant protein foods led to smaller gains in life expectancy and was accompanied by a trade-off: an increased calcium inadequacy by up to 14%.

I hope our findings will help consumers make healthier and more sustainable food choices and inform future food policy in Canada, says senior author Sergio Burgos, associate professor in McGills animal science department and a scientist at the Research Institute of McGill University Health Centre.

As more people seek sustainable and health-conscious diets, the studys findings serve as a guide, empowering individuals to make informed choices that benefit both personal well-being and the planet.

Increasing the consumption of plant-based foods alongside reductions in red and processed meat would have considerable benefits for health and the environment and would involve relatively small changes in diets for most people in Canada, says Patricia Eustachio Colombo, coauthor and honorary research fellow at the London School of Hygiene & Tropical Medicines Centre on Climate Change & Planetary Health.

The study appears in Nature Food.

Source: McGill University

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Red meat cuts can benefit the climate and your lifespan - Futurity: Research News

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