Keeping your blood glucose levels as close to normal as possible
can be a lifesaver. Tight control can prevent or slow the progress of many complications of diabetes, giving you extra years of
healthy, active life.
But tight control is
not for everyone and it involves hard work.
What Does Tight
Control Mean?
Tight control means
getting as close to a normal (nondiabetic) blood glucose level as
you safely can. Ideally, this means levels between 70 and 130 mg/dl before meals, and less than 180 two
hours after starting a meal, with a glycated hemoglobin (A1C)
level less than 7 percent. The target number for glycated hemoglobin will vary
depending on the type of test your doctor's laboratory uses.
In real life, you
should set your goals with your doctor. Keeping a normal level all the time is
not practical. And it's not needed to get results. Every bit you lower your
blood glucose level helps to prevent complications.
How Does It Help?
No one knows why high
glucose levels cause complications in people with diabetes. But keeping glucose
levels as low as possible prevents or slows some complications.
For the Diabetes
Control and Complications Trial (DCCT), researchers followed 1,441 people with type 1 diabetes for several years. Half of the people
continued standard diabetes treatment while the other half followed an intensive-control
program. Those on intensive control kept their blood glucose levels lower than
those on standard treatment, although the average level was still above normal.
The results? Here's
what they found in the tight-control group as compared with the
standard-treatment group:
·
Diabetic eye disease started in only one-quarter as many people.
·
Kidney disease started in only half as many people.
·
Nerve disease started in only one-third as many people.
·
Far fewer people who already had early forms of these three
complications got worse.
Living With Tight
Control
To get tight control,
you must do the following:
·
Pay more attention to your diet and exercise.
·
Measure your blood glucose levels more often.
·
If you take insulin, change how much you use and your injection schedule.
Getting Intense With
Insulin
In intensive therapy,
you provide yourself with a low level of insulin at all times and take extra
insulin when you eat. This pattern mimics the release of insulin from the
normal pancreas.
There are two ways to
get more natural levels of insulin: multiple daily injection therapy and an insulin pump.
Both are good methods. Your choice should depend on which best fits your
lifestyle.
In multiple daily
injection therapy, you take three or more insulin shots per day. Usually, you
take a shot of short-acting or Regular insulin before
each meal and a shot of intermediate- or long-acting insulin at bedtime.
With an insulin pump,
you wear a tiny pump that releases insulin into your body through a plastic
tube. Usually, it gives you a constant small dose of Regular insulin. You also
have the pump release extra insulin when you need it, such as before a meal.
With either method,
you must test your blood glucose levels several times a day. You need to test
before each shot or extra dose of insulin to know how many units to take and
how long before eating to take it. Also, you may want to test 2-3 hours after
eating to make sure you took enough insulin. You must adjust your insulin dose
for how much you plan to eat and how active you expect to be.
Getting Started
You do not need to
figure these things out on your own. Whatever method you choose, your health
care team (your doctor, dietitian, diabetes educator, and other health care
professionals) should spend a lot of time teaching you about it. Your team will
help you make guidelines for how much insulin to take and when.
You will also come up
with guidelines for eating and exercising. These guidelines may change several
times as you test them out.
You shouldn't try
tight control on your own. A good health care team is a must. Choose a doctor
who understands diabetes well or is willing to learn for your sake. Your doctor
should have ties with other health professionals you need, such as dietitians
and a mental health worker.
If you live in a small
town, look at your options carefully. You may be better off driving to a city
to see a specialist.
Keeping It Going
Starting a program of
tight control is exciting. But it can also be overwhelming. How do you keep
from running out of energy?
Here are some tips:
·
Start slowly.
For
example, you might start by checking your blood glucose more times each day.
Get used to that first. Then start multiple daily injections. Once you're used
to those, add your new exercise program and make the changes in your diet.
·
Be honest.
If
you are newly diagnosed with diabetes, look honestly at yourself. Are you still
angry and depressed that you have diabetes? If so, you already have a big
challenge facing you. You may want to wait to try tight control until after
you've come to terms with the changes in your life.
·
Keep your goals realistic.
No
matter how hard you try, your blood glucose readings will not be perfect every
time. If they are often too high or too low, you should talk to your doctor
about whether your plan needs to be adjusted. But if "wrong" levels
happen only sometimes, that's life. With practice, you will become more skilled
at choosing the right insulin doses for various situations.
·
Take a break.
If
you need to, take a breather from the new routine. Having some time off may
make it easier to stick to your plan when you start again.
Pluses and Minuses
One big reason to try
tight control is to prevent complications later. But tight control has effects
you can enjoy right now:
·
You will probably feel better and have more energy.
·
You can vary your activities more.
·
You're not locked into having your meals at the same time each
day.
·
It can reduce the risk of birth defects.
But the DCCT found two
major problems with tight control:
·
Hypoglycemia
People on tight control had three times as many low blood glucose reactions
(hypoglycemia). You will need to be alert to the symptoms of hypoglycemia so that you can treat yourself
quickly. Also, you should always check your blood glucose levels before you
drive. If you often have low blood glucose reactions when you try tight
control, talk to your doctor. You may need to ease up on your goals or go back
on standard therapy for a while.
·
Weight Gain
People on tight control gained more weight than people on standard insulin
treatment. The average in the DCCT was 10 pounds. If you are concerned about
putting on pounds, work with your dietitian and doctor to devise a meal and
exercise plan to prevent it.
You should also
consider the cost:
·
You will need to see your health care team more often.
·
Pumps cost thousands, and pump supplies run $60 to $80 a month
·
Multiple injection therapy is much cheaper, but you will still
use more supplies, like test strips and syringes, than before.
What About Type 2
Diabetes?
The DCCT studied only
people with type 1 diabetes. But doctors believe that tight control can also
prevent complications in people with type 2 diabetes.
Most people with type
2 diabetes do not take insulin. You may be wondering how you can achieve tight
control without it.
One way is to lose
weight. Shedding excess pounds may bring your glucose levels down to normal.
The key to losing weight and keeping it off is changing your behavior so that
you eat less and exercise more. Your doctor should work with you to find an
eating and exercise plan you can stick to.
Even if you don't need
to lose weight, exercise is helpful in controlling your blood glucose levels.
It makes your cells take glucose out of the blood.
You will need to check
your blood glucose regularly. You should decide with your doctor how often.
Once a day or even once a week may be enough for some people with type 2
diabetes.
If exercise and good
eating habits are not enough to keep your glucose under control, you doctor may
prescribe pills. And if these don't work, you may need to take insulin. People
with type 2 diabetes should talk to their doctors before starting tight
control.
Tight Control Is Not
for Everyone
Tight control is not
safe for everyone with diabetes.
Children should not be
put on a program of tight control. Having enough glucose in the blood is vital
to brain development. Some doctors say that tight control should wait until a
child reaches 13; others say after the age of 7 is okay.
Elderly people
probably should not go on tight control. Hypoglycemia can cause strokes and
heart attacks in older people. Also, the major goal of tight control is to
prevent complications many years later. Tight control is most worthwhile for
healthy people who can expect to live at least 10 more years.
Some people who
already have complications should not be on tight control. For example, people
with end-stage kidney disease or severe vision loss probably should not try it.
Their complications are probably too far along to be helped. Some people who
have coronary artery disease
or vascular disease should not try tight control.
People who have hypoglycemia
unawareness probably
should not go on tight control