As I said earlier, I think this research is from a very different perspective
But evidence for present guidelines:
Recent SACN draft report on carbohydrates, it summarises most of the evidence that will be used for future UK guidelines. This is for the general population but includes sections on various conditions including diabetes but and also heart disease, colo-rectal health and oral health. (all of which are important to everyone; diabetic or not)
https://www.gov.uk/government/uploa...bohydrates_and_Health_report_consultation.pdf
Jim Mann, was the chairman of the European committee that oversaw the last European diabetes dietary guidelines. He gave a lecture to the EASD on Carbohydrate quality (and quantity) a couple of years ago.
He believes that the guidelines have been misinterpreted and advice can be confusing and unhelpful He cited the phrase from DUK about 'plenty of carbohydrates'.( I don't think that they actually use the phrase anymore. )
In the video he says
"The problem is that many dietitians around the world are telling people to have wholegrain bread when most wholegrain bread is roughly comparable to eating a bag of glucose.”
Link to a blog summarising Mann's lecture with a link to the actual presentation
http://scepticalnutritionist.com.au/?p=1069
He has also very recently published a paper
Carbohydrates in the treatment and prevention of Type 2 diabetes. ( includes and expands on many of the same points as in the lecture ).
He points out that the original controlled trials that showed a benefit from higher carb lower fat diets
"included legumes, pulses,minimally processed wholegrain cereals, vegetables (excluding potatoes and other starchy vegetables) and fruit, all witha high dietary fibre content and low glycaemic index"
http://qap2.onlinelibrary.wiley.com/doi/10.1111/dme.12673/pdf
This debate has been going on for a very long time.
From Diet, Delusion and Diabetes.L Sawyer and E.A.M Gale
From an historical perspective, it is easy to see that the investigators of diet have confused circular motion with progress. The very low carbohydrate diets of the pre-insulin era yielded to the high carbohydrate diets of the late 1920s and 1930s, and these gave way to the free diets of the 1930s through to the 1950s. The cycle then resumed with the low carbohydrate diet of the 1960s, the high carbohydrate/high fibre diet of the 1970s, the free diets of the latter part of the century and the reincarnation of the pre-insulin regimen in the form of the Atkins diet. The enthusiasts have come and
gone, each claiming unique virtue and spectacular success for their own particular regimen, and it would be hard toimagine a diet that has not at some stage constituted anarticle of faith in diabetes management. Almost all these diets worked some of the time, but we may suspect that few were followed with any degree of rigour for most of the
time
http://link.springer.com/article/10.1007/s00125-008-1203-9
