How Often Should You Monitor Your Blood Suga
r?
There has been debate over how many times you should check you blood
sugar for a long time. The benefits of monitoring are evident for people
who take insulin; you check your blood sugar, if the reading is high, you
take a little insulin and the blood sugar goes down. So what about those
of us who don’t take insulin? The American Diabetes Association says the
benefits of blood sugar monitoring for people who do not take insulin are
“unknown”.
There have been very few well designed studies to answer the debate
over whether monitoring helps us or not. The few studies that have been
published show that those who monitor more often have a lower A1C. The
average reduction in A1C from all the published studies is about 0.4%.
This doesn’t seem like much of a reduction in A1C but, if you maintain
that reduction you can reduce your risk of developing diabetes
complications such as eye, kidney and nerve disease by 14%. Two new
studies were presented June 2005, at the Annual American Association of
Scientific Sessions in San Diego. One followed 3000 people with Type 2
diabetes for 10 years and found those who monitored more often were 33%
less likely to develop diabetes complications or to die than people who
did not monitor. The second study also included people with Type 2
diabetes who were not on insulin and found that those who monitored their
blood sugar had an A1C of 6.9%, while those who did not monitor had an A1C
of 7.8%.
I have found from my own personal experience, if I monitor 2 – 3
times a day, my blood sugars are more in the near normal range than if I
don’t monitor. My patients also report they have lower A1Cs if they
monitor 2 – 3 times a day. (I see their lab reports and I check the
memory in their meters so I know they are telling me the truth) So what
can you do to lower blood sugar when you get a high reading? You can
exercise more, you can change your eating habits and you can talk to your
health care team about other approaches. If you have not been to a
diabetes education class or it has been years since you had any diabetes
education ask your doctor to refer you to a class in your area. There are
also Dietitian/Certified Diabetes Educators who can sit down with you and
help you in the areas you need to learn about. Ask your insurance provider
if there are any available in your area.
Now let’s talk about what the readings from your meter mean. When you
check blood sugar first thing in the morning it is called a fasting
blood sugar. This number can tell you if your evening medication
or insulin is working for you. In the middle of the night, about 2 a.m.
– 3 a.m., your blood sugar normally starts to drop lower. Your liver
senses this and begins to make extra blood sugar. Some of us have a very
good liver and it keeps on making blood sugar, just keeps going and going,
like the Energizer bunny! Sometimes if you eat a small fat and protein
based snack, the liver never gets the message to make blood sugar. I like
to have peanut butter and 5 or 6 crackers before I go to bed. When I talk
about this evening snack with my patients, they will say that they have
noticed lower fasting blood sugars when they eat things like pie, cheese
and crackers or even ice cream as a bedtime snack.
Another good time to check your blood sugar is about 2 hours after you
eat. It takes the carbohydrates in the meal about 2 hours to digest and
get out to the cells as fuel. This is called a post-prandial blood
sugar. If this number is above 140, this is an indication that you
had too much carbohydrate at the last meal. Carbohydrate foods are breads,
starches, starchy vegetables, fruits, milk and sweets. Aim for no more
than 3 small servings of these foods at a meal, about 45 grams of
carbohydrate. If you don’t know what foods are carbohydrates or how to
read a food label for them, go see a Dietitian/Diabetes Educator. They can
help you learn these things.
You are the most important part of your health care team. You make the
daily decisions on what to eat, when to exercise, when to take your
medications, whether to check blood sugars. Control your diabetes, don’t
let it control you.
See you next issue.
Deborah L. Kimble, LD, CDE, MSPH, CPT
“Your Favorite Diabetes & Nutrition Educator”
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