The following post was made by a friend on a UK diabetes site. It is very interesting!!!
"Here's a link to an ebook of a diet prescribed in 1916 at Massachusetts General Hospital, Boston, which is extremely carbohydrate restricted, around 30g per day, sometimes only 15g, for diabetics. It shows that carb restriction was known about and practised nearly 100 years ago and before insulin was discovered. Unfortunately it did not save the lives of many of the children described but helped the adults."