Hello Mrs. Toodles, I'm glad you found us. I'm sure you feel a little lost at this point but you'll feel better after learning as much as you can. Please spend some time reading through our older posts and you can find lots of information about diet, medication, etc. I'm presuming the test you had was just a fasting test and the 6.4 means 6.4 mmol/L. This is the measurement used in Canada and the UK (and probably the rest of the world). In the States, we use mg/dL and the equivalent for us would be about 117. This is not terribly high but would be a red flag for you to be aware that your fasting blood sugar is elevated and you might need another test. Yes, cutting back on carbohydrates and engaging in some sort of sustained exercise is very helpful in controling blood sugar, especially in someone who might be considered 'borderline'. Swimming and walking are very good - and make sure it's ok with your doctor since you have had back surgeries. There are two other lab tests the doctor might order: the glucose tolerance test in which you fast, they take blood, and then you drink a sugary drink in a lab and they take your blood after 1 hour and then after 2 hours. And there's the HBA1c or (or A1c) which is just a regular blood test taken any time of the day (you don't have to be fasting) which measures what your blood sugar averaged for about 3 months. The results of the A1c is not equivalent to the mmol/L measurement. It's completely different. Stay with us and ask all the questions you need to, ok?