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Blood test is an accurate measure of blood sugar

Dear Dr. Roach: I am a 72-year-old man. About three weeks ago, I saw my primary doctor for a checkup. Routine blood work was fine, except the results of my hemoglobin A1c, which was 5.7 per cent (a normal range is 4.8-5.6).

Dear Dr. Roach: I am a 72-year-old man. About three weeks ago, I saw my primary doctor for a checkup. Routine blood work was fine, except the results of my hemoglobin A1c, which was 5.7 per cent (a normal range is 4.8-5.6). I was told to change my diet drastically, and was given a brochure with ways to do this. A couple of weeks later, I went to another doctor who laughed and told me not to worry, that it is nothing to be concerned about and that I should stop eating rice, and that was that. He also told me not to eat bananas, since my potassium was 4.5, which the other doctor had not mentioned. As you can well imagine, I鈥檓 a little confused, especially about the hemoglobin A1c.

L.T.

It鈥檚 said that if you ask 10 doctors something, you can get 10 different opinions. I think my opinion is somewhere in the middle of the two extremes you have gotten already.

The hemoglobin A1c, also called glycosylated hemoglobin, is an accurate test of your blood sugar during the past few months, so it gives a better picture of the risk of diabetes than a single blood sugar level. Yours falls in the range of pre-diabetes, also called impaired glucose tolerance. Studies have shown that regular exercise and a careful diet can drastically reduce the risk of pre-diabetes becoming overt diabetes. So, while I don't necessarily recommend a 鈥渄rastic鈥 change, look at what you are eating and eliminate all the refined sugar you can 鈥 especially all non-diet soft drinks. Rice, bread and pasta are all carbohydrates, and it鈥檚 appropriate to limit their intake. Fruit intake of one or two servings per meal is fine 鈥 and I wouldn鈥檛 keep you from having a banana a day with your level of potassium.

But probably most important is for you to get some regular exercise 鈥 walking is as good as anything. An inexpensive pedometer can help you reach the goal of 10,000听steps a day.

Dear Dr. Roach: I have been taking Ambien for six years. I am unable to sleep without it. I have read some health scares regarding its use, and I wanted your take on this. I am a healthy female who is 58听years old.

T.F.

Although Ambien (zolpidem) is a relatively safe medication for occasional use, long-term use of any sleeping medication tends to become less effective over time. Further, zolpidem, like other classes of sleeping medications, increases the risk of falls when used on a long-term basis. It also puts people at higher risk for motor vehicle accidents. Also, zolpidem seems most likely to have the side effect of complex sleep behaviours, including sleep eating and sleep driving.

In general, I recommend trying to use sleeping medications no more than every other day, and for no longer a time period than four weeks.

Dr. Roach regrets that he is unable to answer individual letters, but will incorporate them in the column whenever possible. You may email questions to [email protected].