Artículo en The Guardian nos explica por qué dejar de comer carne y lácteos es el mayor cambio que podemos hacer para reducir nuestro impacto en el planeta
“A vegan diet is probably the single biggest way to reduce your impact on planet Earth, not just greenhouse gases, but global acidification, eutrophication, land use and water use,” said Joseph Poore, at the University of Oxford, UK, who led the research. “It is far bigger than cutting down on your flights or buying an electric car,” he said, as these only cut greenhouse gas emissions.
“Agriculture is a sector that spans all the multitude of environmental problems,” he said. “Really it is animal products that are responsible for so much of this. Avoiding consumption of animal products delivers far better environmental benefits than trying to purchase sustainable meat and dairy.”
The new research has received strong praise from other food experts. Prof Gidon Eshel, at Bard College, US, said: “I was awestruck. It is really important, sound, ambitious, revealing and beautifully done.”
Prof Tim Benton, at the University of Leeds, UK, said: “This is an immensely useful study. It brings together a huge amount of data and that makes its conclusions much more robust. The way we produce food, consume and waste food is unsustainable from a planetary perspective. Given the global obesity crisis, changing diets – eating less livestock produce and more vegetables and fruit – has the potential to make both us and the planet healthier.”
Dr Peter Alexander, at the University of Edinburgh, UK, was also impressed but noted: “There may be environmental benefits, eg for biodiversity, from sustainably managed grazing and increasing animal product consumption may improve nutrition for some of the poorest globally.”
La Organización de las Naciones Unidas para la Agricultura y la Alimentación hace llamado a encontrar soluciones urgentes:
Según un reciente informe de la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO), el sector ganadero genera más gases de efecto invernadero –el 18 por ciento, medidos en su equivalente en dióxido de carbono (CO2)- que el sector del transporte. También es una de las principales causas de la degradación del suelo y de los recursos hídricos.
“El ganado es uno de los principales responsables de los graves problemas medioambientales de hoy en día. Se requiere una acción urgente para hacer frente a esta situación”, asegura Henning Steinfeld, Jefe de la Subdirección de Información Ganadera y de Análisis y Política del Sector de la FAO, y uno de los autores del estudio.
Interesante artículo de octubre de 2018 mencionando los beneficios en la salud, el medio ambiente (reduciendo la principal causa de emisión de gases con efecto invernadero, deforestación y consumo de agua) así como los motivos éticos para no comer alimentos de origen animal (carnes, incluyendo pescados, huevos ni lácteos)
Between 2002 and 2007, 73,000 Seventh Day Adventists, a religious group in America, participated in a study of eating habits. The 27,000 vegans and vegetarians among them had significantly lower mortality rates.
Large studies have shown that people who eat a lot of red meat have higher overall mortality rates. … Eating a lot of processed meat is linked to colorectal cancer. The evidence on this seems clear enough for various authorities to recommend limits to the total ingestion of red meat.
In 2016 a study by Marco Springmann and colleagues at the University of Oxford found that, globally, a transition to well-balanced vegan diets might result in 8.1m fewer deaths a year. Universal vegetarianism would avoid 7.3m deaths.
Mr Springmann and his colleagues calculated that in 2050 greenhouse emissions from agriculture in a vegan world would be 70% lower than in a world where people ate as they do today
Raising cattle produces seven times more in terms of emissions per tonne of protein than raising pork or poultry does, 12 times more than soya and 30 times more than wheat.
The vegans also abstain from milk and eggs because there, too, they see a lot of exploitation, death and suffering. In dairy herds calves are typically taken from their mothers within 24 hours, compared with the nine months to a year they would suckle if left to themselves. Male calves are killed or reared for meat. In industrial egg-production day-old male chicks are killed and simply discarded. Even if one keeps strictly to meat, though, the death toll involved is immense. Over 50bn farm animals are killed for meat every year.
Animals’ brains contain regions clearly analogous to those correlated with consciousness, perception and emotion in humans. They definitely feel pain, and some can both express preferences and, it would appear, hold beliefs about the preferences of others. That would seem to have some moral salience.
Iluminador artículo de octubre del 2018 sobre cómo una dieta basada en plantas, es decir alimentos de origen vegetal, tienen el mayor impacto positivo en nuestra salud y en el planeta comparado con otras dietas.
A public health strategy focused on improving energy balance and dietary changes towards predominantly plant-based diets that are in line with evidence on healthy eating is a suitable approach for sustainable diets.
Artículo en revista Nature: Exploring the biophysical option space for feeding the world without deforestation
A vegan or vegetarian diet is associated with only half the cropland demand, grazing intensity and overall biomass harvest of comparable meat-based human diets. Furthermore, a decreasing share of livestock products in human diets could also be associated with health benefits, particularly in the industrialized regions
Artículo del National Academy of Sciences de EE.UU.: Analysis and valuation of the health and climate change cobenefits of dietary change
Transitioning toward more plant-based diets that are in line with standard dietary guidelines could reduce global mortality by 6–10% and food-related greenhouse gas emissions by 29–70% compared with a reference scenario in 2050. We find that the monetized value of the improvements in health would be comparable with, or exceed, the value of the environmental benefits although the exact valuation method used considerably affects the estimated amounts. Overall, we estimate the economic benefits of improving diets to be 1–31 trillion US dollars, which is equivalent to 0.4–13% of global gross domestic product (GDP) in 2050.
The findings of this study support the idea that dietary change towards plant-based diets has significant potential to reduce the agricultural land requirements of U.S. consumers and increase the carrying capacity of U.S. agricultural resources.
Documental alemán sobre el comer carne y los impactos en la salud y el medio ambiente.