Although there is no absolute consensus on the recommendation for total fat and dietary fat and saturated fat (SFA) intake between governing bodies and health organizations, there is a general sense of convergence. All guidelines currently suggest that total fat should not exceed 35% of daily calories. Although most guidelines propose a target for dietary SFA, there is no consensus on the value to aim for.

The European Commission was due to publish a Communication on Sustainable Food in 2013 to “assess how best to limit waste throughout the food supply chain, and consider ways to lower the environmental impact of food production and consumption patterns”.  This long-awaited Communication has still not been published.

The annual report 2013 from Bioversity international contains a special discussion on “Improved nutrition through sustainable food choices”. The sustainable diets research by Bioversity focuses on food and food systems, taking into account food diversity and how it can be produced and acquired across all seasons and under different economic circumstances.

This paper provides a schema for categorizing all diets as either: low carbohydrate; fat, low glycemic; Mediterranean; mixed, balanced; Paleolithic; or vegan.  The researchers emphasize that the aim of the research is not to recommend one particular diet over another, but rather to highlight how disease prevention and increased public health is best realised.

This paper on sustainable diets, published in Biological Agriculture and Horticulture, provides evidence on the most effective ways to influence consumers to adopt sustainable diets. The evidence comes from a pilot study on a group of 163 Australians who would be expected to be ‘early adopters’ of a sustainable diet (due to their higher than average education and income).

This paper looks at the environmental costs of food production and consumption. It offers an updated account of the GHG emissions associated with production of U.S. food losses at the retail/institution and consumer level and also considers the effects of a shift in diets away from current US consumption patterns towards those recommended by USDA dietary guidelines.

New data from Canadean based on a survey of 2000 individuals finds that many people in Britain are interested in trying insects and around 6% say that they would like to eat them regularly.

In our mailing of 1st July 2014 we highlighted a new paper by Pete Scarborough et al. which compared the GHG intensity of diets adopted by vegetarians, fish eaters and meat eaters in the UK. The Oxford Martin School has now published a short interview with Pete, in which he outlines his motivation for undertaking this work, the method he adopted, and the insights gained from the study. Citation Scarborough, P., "Q&A: Should We All Become Vegans to save the Planet?" Interview by Sally Stewart. Web log post. ThinkLONG. Oxford Martin School, University of Oxford, 08 July 2014. Read the full interview blog-post here. We have also highlighted Peter Scarborough’s paper in an earlier newsletter, see it and our ‘further reading’ recommendations here. 

The next version of Dietary Guidelines for Americans, from the U.S. Department of Agriculture (USDA) and the Department of Health and Human Services (HHS) seem likely to include advice on sustainable diets. Preliminary conclusions from a subcommittee on food sustainability and safety indicate that the message of how the food is produced will be included in the final recommendations. For more on these subcommittee discussions read an article in Science here.          Read more a bout the dietary guidelines here. You can also find more information on our website about other dietary guidelines and food policy.