The words of a professor in the field.
Hi Mr Stewardson
I do not think that cutting out carbohydrates is a good thing to do, in the long term. Having a balance of food types is most important.
You have not said whether you are referring to type 1 diabetes or type 2 diabetes. These are different, and the advice will also be different.
If you are referring to type 1 diabetes, the important thing about eating carbohydrates is that the amount of insulin taken is matched to to the carbohydrates, and getting the right ratio of this is very important. There are many places in the UK where people can attend the DAFNE course to learn how to really do this matching of insulin to carbohydrates is taught, and I would strongly recommend that everyone should at some stage do one of these courses. For type 2 diabetes, there are a number of different courses like Xpert and DESMOND that will also look at how best to learn about food balance.
A balance of food is important and having the carbohydrates is part of this. Getting all energy from fat will in the longer term cause problems with fat and cholesterol metabolism, and circulation. Having too much protein is an inefficient way of getting energy and, in the long term, will put strain on the kidneys. In addition, there are other types of nutrition gained from foods that have carbohydrate, and it is not only the carbohydrate content that is important.
The point about starch is that it is longer acting and having foods containing starch rather than a high content of refined sugar means that the carbohydrate is released over a longer period of time, rather than causing than blood glucose to rise rapidly, and therefore better to have this type of carbohydrate. Changing types of carbohydrate from highly refined carbohydrate to food with more starch means that the glucose should not rise so fast and can be better matched with the insulin, whether it comes from within the body or has to be given from the outside.
Good health and healthy eating is not simply about the blood sugar. Understanding all aspects of diet and health is important, and my experience of working with dietitians at a number of different hospitals is that they do not give bad advice and that consulting them early on is very important. More information could also be obtained from Diabetes UK.
Hope this helps.
Best wishes