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Diabetes
Diet?
The
Sweet Truth about Diabetes?
What
Kind of Diabetes Do You Have?
The
Sweet Truth
Diabetes
is a serious disease with potentially dangerous complications, but with
proper management, a healthful lifestyle and smart choices, its worst
effects may be avoided.
Diabetes is the leading
cause of adult blindness in the United States. It is the single leading
cause of kidney failure and non-traumatic amputations. This year alone,
160,000 Americans will die from diabetes -- more than from breast cancer,
AIDS and other chronic diseases. Diabetes costs the U.S. more than $92
billion in health care costs and lost productivity annually.
It is estimated that
although about 16 million Americans have diabetes, only half of them have
been diagnosed with the disease. Furthermore, many people who are aware of
their condition do not take it seriously enough and develop severe
complications. In addition, the National Institute of Diabetes and
Digestive Kidney Diseases reports that the prevalence of diabetes is
rising, as the U.S. population ages and as more Americans become obese.
What's most tragic about
all this is that diabetics can live long, healthy lives. Many of the
health problems associated with the condition can be prevented or
moderated by maintaining a normal body weight, engaging in regular
physical activity, eating well, and taking medication if advised to do so
by a physician. In certain instances, diabetes can be avoided altogether
by following these life-style recommendations.
Who Gets Diabetes?
Anyone can get diabetes,
but the following factors may put you at higher risk of developing it:
- being overweight (see weight chart)
- having a family history of diabetes
- being of African-American, Hispanic or
Native American origins ups the risk of developing diabetes two to six
times as that of the general population. In addition, African
Americans experience higher rates of blindness, amputation and kidney
failure due to diabetes.
- not exercising regularly
- being over age 45
- delivering a baby over nine pounds
What Is Diabetes?
When we eat, our body turns
food into glucose (the sugar that cells use for fuel), and a hormone
called insulin helps the glucose get into body cells. In diabetes,
however, too much glucose stays in the blood. As a result, two problems
occur: body cells become starved for energy, and, over time, the high
glucose levels can damage the nerves, eyes, kidneys, heart and blood
vessels.
There are two main kinds of
diabetes:
1. The
most common form of diabetes, accounting for 90 to 95 percent of all
diabetes cases, is noninsulin-dependent diabetes (type II
diabetes). People with this condition either don't produce enough
insulin to control glucose levels or their cells simply do not respond
to the insulin.
2.
Insulin-dependent diabetes (type I diabetes) is less common but much
more severe. This condition is caused by damage to the pancreas, an
organ near your stomach that contains beta cells, which produce insulin.
Many things can destroy beta cells, but in most people with
insulin-dependent diabetes, a glitch in the immune system causes it to
attack the beta cells. Without insulin-producing beta cells, glucose
builds up in the blood.
Poor lifestyle habits are
linked to 50 to 80 percent of all cases of type II diabetes -- the most
common form of the disease. That means you can significantly reduce your
risk of developing diabetes by maintaining a healthy body weight, engaging
in regular physical activity and eating well.
Can I Tell If I Have Diabetes?
That depends. Most people
with Type II diabetes cannot tell they have it, which is one of the
reasons only half of all the people with the condition have been
diagnosed. However, if their blood glucose levels get way too high (most
likely when the person is sick or under a lot of stress), signs may
include: headache, blurry vision, excessive thirst, frequent urination, or
dry, itchy skin.
Type I, on the other hand,
is more likely to be apparent. People with this form of diabetes can
experience one or more of the following: an inexplicable weight loss, very
frequent urination, constant hunger and thirst, trouble seeing, fatigue,
lapsing into a coma. A simple blood test that detects how much glucose is
in the blood can reveal whether a person has diabetes. Then a doctor must
consider various factors to determine if it's type I or II. Generally,
people with type I are diagnosed when they're under 30 years old, lean,
and have high levels of ketones (toxins your body produces when it breaks
down fat for energy) in their urine. People with type II are most often
diagnosed when they're obese and over 30. They usually do not have urine
ketones.
How Is Diabetes Treated?
Diabetes is a chronic
disease. That means it can be managed, but not cured. The goal of
treatment for both types of diabetes is to lower blood glucose levels and
improve the body's use of insulin. The recommended ways to do this
include:
- Eating a healthy diet.
Since your body changes food into glucose, what you eat is very
important when trying to control glucose levels. In the past, people
with diabetes were told to stay away from sweets, but diet
recommendations have changed. Experts now believe the best dietary
recommendations for diabetics are the same as they are for everyone:
minimize fat intake, consume moderate amounts of protein, and plenty of
complex carbohydrates. Consistency and moderation are also very
important dietary factors for diabetics. It's best to eat about the same
number of calories each day, keep track of how much carbohydrate is
eaten, have meals and snacks at the same time each day, and never skip
meals.
Since each person is different, it's important for people with diabetes
to see a dietitian who can work out a unique eating plan. To create such
a plan, the dietitian needs to know details about preferred foods, daily
activities, other health problems, and exercise habits.
- Exercise.
Being active plays an important role in the treatment of diabetes
because it helps cells take in glucose and lowers glucose levels in your
blood. Ideally, it's best to exercise three or four times a week for at
least 20 minutes. People who are not used to exercising, should start
slowly. Even a five-minute walk is a step in the right direction.
- Glucose Testing.
Home glucose tests can help keep track of how well you are controlling
glucose levels. To test blood, a special device called a glucose meter
is available in most drug stores. To perform the test, you prick your
finger and put a drop of blood on a special test strip that the meter
analyzes and then displays how much glucose it contains. Your doctor
will tell you how often to test your blood. You should keep a diary of
the results.
How Does Treatment for Type I and II
Differ?
The strategies mentioned
above can help control both types of diabetes. But there are a few ways in
which treatment varies depending on which form of the disease a person
has. These are:
Type II Diabetes
People with noninsulin-dependent
diabetes are often advised to lose weight if they are 20 percent over the
recommended weight for their sex and height (see weight chart). Losing
weight helps your body use insulin better. In fact, sometimes losing 10 or
20 pounds is all that's needed to bring type II diabetes under control.
Still, sometimes healthful
habits like eating well, losing weight and exercising are not enough. In
that case, people with type II diabetes may have to take one or both of
the following:
- Diabetes pills
do not contain insulin, but they help the body better use the insulin it
produces. There are two kinds of diabetes pills: sulfonylureas and
biguanides. There are many kinds of sulfonylureas, but metformin is the
only type of biguanide. According to the American Diabetes Association,
no one pill is better than any other. What differs is how often they
need to be taken, how long they take to act and their side effects.
(Talk with your doctor to determine which fits your lifestyle best.) The
main side effects of metformin are upset stomach and diarrhea. The
sulfonylurea drugs can cause low blood sugar reactions. Both kinds of
drugs may interact with other medicines.
It is very important to keep in mind that taking pills does not replace
healthful habits. You still need to eat a good diet or the pills won't
work.
Sometimes diabetes pills do not help. In some people they help at first
and then stop working. When this happens, a combination of both
sulfonylurea and metformin may be effective.
- Insulin Shots.
If
all else fails, insulin supplements may be necessary either alone or
along with the pills.
There are various sources and types of insulin from which to choose. The
hormone may come from pigs or cows, or it may be made in a lab (the
latter has the fewest side effects). Insulin also comes in three speeds,
or the time it takes for the insulin to enter the bloodstream and reach
its peak action, and the duration of time it stays in the blood. Doctors
can use these differences to tailor treatment to a particular patient's
schedule and lifestyle.
Most people take regular insulin at least twice a day, before breakfast
and dinner, since it acts quickly on the glucose produced by their
meals. The longer acting insulins are helpful because they control
glucose levels during the late part of the day or overnight. Usually the
two speeds of insulin are mixed together and given at breakfast and
dinner, but different combinations can be used to suit individual needs.
Type I Diabetes
Type I diabetes is known as
insulin-dependent diabetes because people with this form of the disease
don't produce the vital hormone and have to take insulin every day to get
glucose out of their blood and into their cells for fuel. Without insulin,
a type I diabetic can die. Insulin shots must be taken every day.
Doctors teach their patients how to give themselves shots and to smoothly
incorporate this critical treatment into their lives.
Type I diabetics can also
get insulin by using a pump. The small computerized device can be hooked
on to a belt or pocket. A plastic tube leads from the pump to a needle
inserted under the skin and provides a constant supply of insulin. It can
deliver a bigger dose before meals. The benefit of a pump is that it gives
precise, accurate doses and releases insulin in much the same way the body
does. Some people are able to get their glucose under better control with
pumps, but they cost more than shots and take some time to learn to use.
If you want to find out more about the pump, discuss it with your doctor.
Glucose Testing. Most
insulin-dependent diabetics monitor their glucose levels at least four
times a day.
Treatment Complications
1. Ketoacidosis.
Sometimes blood glucose levels can get too high. This may happen if a
person eats too much or doesn't take enough insulin. Stress can also
make blood glucose levels rise. Without enough insulin, the body is
starved for energy and starts breaking down fat for fuel. As a result,
the body produces toxic chemicals called ketones, which can cause
vomiting, difficulty breathing, thirst, dry, itchy skin, or coma.
Diabetics who feel any of these symptoms must test both their glucose
level and their urine for ketones, using test strips that can be bought
at the drugstore. Diabetics should also check their urine when glucose
levels are over 240 mg/dL and when they are sick. Immediate medical
attention is necessary when ketones are persistently found in the urine.
2. Hypoglycemia.
Sometimes, insulin or sulfonylurea pills lower glucose levels too much and
cause a person to feel tired, confused, shaky, sweaty and/or hungry. When
this happens, glucose levels should be tested at once. Diabetics are urged
to do the same thing whenever they feel "odd" or
"funny." A low glucose reading (less than 70 mg/dL) can be
remedied by eating 15 grams of a fast-acting sugar right away. For
example, 1/2 cup of fruit juice, 2 tablespoons of raisins, 1 cup of skim
milk, 3 hard candies, 4 teaspoons of sugar or 4 ounces of non-diet soft
drink.
What Can Go Wrong?
Too much glucose in the
blood over many years can damage the eyes, kidneys, and nerves. It also
increases the risk for heart and blood vessel disease. The best defense
against diabetes complications is to keep glucose levels under control.
Nerve Damage.
The damage diabetes causes to nerves is called diabetic neuropathy and
there are several types, depending on which part of the body is affected.
The symptoms of nerve damage can include:
- feelings of prickling, tingling, burning
or jabbing
- loss of feeling
- weak muscles
- fainting
- vomiting
- bladder infections
- diarrhea
- sexual problems
To prevent nerve damage,
diabetics are encouraged to keep glucose levels well under control, eat a
healthy diet, exercise regularly, avoid smoking, and drink alcohol in
moderation -- if at all.
If nerve damage does
develop, improving glucose control can help. Also, pain caused by the
damage can be treated with certain drugs, exercises or special skin
creams. Surgery may sometimes help. Other treatments are available
depending on where the nerve damage occurs.
Kidney Damage
The kidneys are essential
to filter wastes from the blood. But diabetes may cause the kidneys to
lose their ability to filter properly. As a result, protein that the body
needs is lost in the urine, and wastes that the body doesn't need build up
in the blood. Ten to 21 percent of all people with diabetes develop kidney
disease (diabetic nephropathy). This type of disease causes no symptoms
until the kidneys are severely damaged. Therefore, people with diabetes
should have their urine tested for protein each year. Blood tests can also
be performed.
Kidney disease may be
prevented by controlling glucose levels, keeping blood pressure down, and
eating a healthful diet. This is critical because once kidney damage
occurs, it cannot be reversed. Two treatments are available for kidneys
that are severely compromised. One is dialysis, in which a patient is
hooked up to a machine that filters the blood. Dialysis must be performed
frequently and for long periods of time, often three times a week for over
four hours each time. The other option is a kidney transplant.
Eye Damage
Diabetes can lead to
diabetic retinopathy, or eye disease. There are two types of eye damage
that can occur from diabetes. In the milder form, nonproliferative
retinopathy, blood vessels leak blood and fluid into the eye. The more
severe -- and luckily less common -- type of eye damage is proliferative
retinopathy, in which new blood vessels sprout and grow out of control.
Both types cause eye damage by putting pressure on the retina (the lining
at the back of the eye that senses light and acts like the film in a
camera). If left unchecked, this damage can cause blindness.
Like kidney disease,
retinopathy may not cause any symptoms. A dilated eye exam is the only way
to detect early signs of diabetic eye disease. Therefore, diabetics should
see an ophthalmologist each year after the age of 30. Those under 30, are
advised to see an eye doctor every year after they've had diabetes for
five years. A trip to the eye doctor is also in order if there are warning
signs like blurry or double vision, spots or floaters, pain or pressure in
the eyes, difficulty reading, or loss of peripheral vision (the ability to
see things from the outer corners of the eyes).
The best way to prevent eye
damage is to keep glucose levels normal. However, if damage occurs, the
earlier it's caught, the better treatment works. The two main treatments
are: Photocoagulation (sealing leaky blood vessels with a laser), and
Vitrectomy (surgically removing blood and scar tissue from the eye).
Heart and Blood Vessel Damage
Diabetes increases the risk
for hardening of the arteries, stroke, and peripheral vascular disease, in
which an insufficient amount of blood reaches the areas farthest from the
heart. This occurs because diabetes changes body chemistry. As a result,
blood may clot too easily, blood vessels may narrow, and fat may build up
in the blood vessels faster. Symptoms include poor circulation, frequent
infections, itchy skin, shiny legs that lose their hair, calves that hurt
excessively during exercise and, for men, difficulty having an erection.
High blood pressure and cholesterol levels signal that a person has a
higher risk for heart or blood vessel damage. Preventive measures for
these problems include:
- keeping blood glucose levels under
control
- not smoking
- eating a low-fat, low-salt diet
- keeping blood pressure normal
- keeping your blood cholesterol level
below 200 mg/dL
- exercising regularly
- losing weight if needed
Other Problems
Often, damage to one organ
will affect other parts of the body. Common problems of this type include:
- Skin.
Damaged
nerves and narrowed blood vessels can both lead to dry, itchy skin. Poor
circulation makes infections more likely and longer lasting, and can
cause spots, blisters, yellow bumps and rashes. Skin on the hands and
toes may become waxy and tight. Moisturizing skin (except between toes
and other places where skin touches skin) can help. Cuts should be
washed carefully, but avoid harsh cleaners like alcohol.
- Mouth.
High
glucose levels provide an inviting home for germs, so people with
diabetes are more likely to get gum infections. In addition, poor
circulation can slow down the healing process. Professional cleaning
every six months can help protect teeth, as can brushing with a soft
brush at least twice a day, and flossing every day.
- Impotence.
One
out of every four impotent men has diabetes. Both nerve damage and poor
circulation can make it difficult to have an erection. If the doctor
determines that impotence is caused by diabetes, getting glucose levels
under control can help. Also, quitting smoking will improve circulation.
- Feet.
People
with diabetes often have problems with their feet. Nerve damage and
reduced circulation can affect feeling in the feet, making it difficult
to detect if they've been scraped or injured. Poor blood flow can keep
any sores from healing, which can lead to gangrene (when the tissue dies
because of inadequate circulation in the area). That is why diabetes is
the most frequent cause of non-traumatic lower limb amputations. Each
year 54,000 people lose their foot or leg to diabetes.
To protect their feet,
diabetics should: Wash them and dry them carefully; check for injuries;
have shoes fit by a trained fitter; wear only comfortable, supportive
shoes with low heels and plenty of wiggle room for the toes; check for
pebbles or other irritating objects before slipping shoes on; wear socks
without seams or mended areas; avoid going barefoot -- even to walk to the
bathroom during the night.
Good News for Diabetics with a Sweet Tooth
In the past, people with
diabetes were prohibited from eating sugar. But now sweets are no longer
off limits. Since sugars are simple carbohydrates, it was assumed that
they would be digested and changed into glucose faster than other foods,
thereby causing a faster rise in blood glucose levels. New research shows,
however, that all carbohydrates are digested and converted to glucose at
about the same rate. Whether the carbohydrate is simple (like sugar) or
complex (like bread) doesn't seem to matter. That's why the American
Diabetes Association has changed it's dietary guidelines. Instead of
eliminating simple sugar altogether, diabetics are advised to work them
into their food plan in place of other carbohydrates. Meaning they can
have that ice cream sundae, as long as they compensate for it by cutting
back on an equivalent amount of other carbohydrates. A typical diet for
diabetics allows for three to four carbohydrate choices at each meal
(approximately 12 to 15 grams of carbohydrates are considered one
carbohydrate choice). So a person with diabetes might have one to two
choices in the morning; one to two in the afternoon for those on insulin;
and one to three at bedtime. Food labels tell you the total number of
carbohydrate grams per serving. And the following list indicates what are
considered single carbohydrate choices among some common foods:
Grains, Starches and Sweets:
- 1 slice of bread, English muffin,
hamburger bun, or small roll
- 1/2 bagel
- 3/4 cup of dry cereal (most types)
- 1/2 cup cooked cereal
- 1/4 cup granola
- 1/2 cup pasta, potatoes, winter squash,
peas or corn
- 1 small potato
- 1/3 cup cooked rice, beans or lentils
- 2 small pancakes or 1 medium-size pancake
- 4 to 5 snack crackers or 6 soda crackers
- 3 cups popcorn
- 1 ounce pretzels
- 3 graham cracker squares
- 1 3-inch cookie or 2 1 3/4-inch cookies
- 1 tablespoon sugar or maple syrup
Vegetables and Fruits:
- 1 1/2 cups cooked vegetables
- 3 cups raw vegetables
- 1 1/2 cups tomato or other vegetable juice
- 1 medium-size fresh fruit
- 1/2 cup fresh or frozen fruit
- 1/2 cup fruit canned in natural juice or
water
- 1/2 grapefruit or banana
- 1/4 cup dried fruit
- 1 cup berries or melon
- 12 to 15 grapes
- 1/3 to 1/2 cup fruit juice
Dairy Products:
- 1 cup (8 ounces) skim or low-fat milk
- 1 cup plain or artificially sweetened
yogurt
- 1/2 cup ice cream
- 1/3 cup frozen yogurt
All the Right Moves
Exercise helps people with
diabetes in many ways. It can help alleviate stress, which could raise
glucose levels, and it lowers blood cholesterol and blood pressure,
cutting the risk for heart disease. Blood glucose levels fall for several
hours after the exercise, reducing how much medication is needed. Working
out can also help keep weight down (excess weight makes it harder to
control glucose levels).
There are two types of
exercises: one makes your muscles stronger (anaerobic or weight-bearing)
and the other gives you more stamina (aerobic). Both are good for people
with diabetes, but most doctors emphasize aerobic exercise because it
strengthens the heart and lungs and helps keep weight down.
To improve fitness, you
should participate in aerobic exercise that increases your heart rate for
20 to 40 minutes, three to five times a week. Good aerobic activities
include jogging, biking, walking, swimming, dancing, and skating.
Talk to your doctor before
beginning an exercise program to find out how to adjust food and
medications. Also, depending on your age, your physician may want to run
some tests before you start.
To avoid injury, it's best
to ease into any type of exercise routine. Initially, a short walk once a
week may suffice. Once that becomes second nature, the number of walks per
week can be increased and so can the distance. Anything that gets you up
and moving is good, so physical activity should be incorporated into
everyday tasks. Take the stairs instead of the elevator, rake leaves or
sweep the floors with vigor, park further away from destinations to get
more walking in, stretch or do some jumping jacks while watching TV.
Diabetics should, however, take a little extra care while exercising:
- Keep alert for warning signs.
Since
exercise lowers blood glucose levels, be prepared in case they drop too
low. Learn the signs of low blood sugar (see Hypoglycemia, and have some
form of sugar with you.
- Protect your feet.
Make sure you use good exercise shoes that fit well, are designed for
the type of activity you are doing, and have smooth insides with no
seams, gaps or areas that rub. Wear clean socks without lumpy seams.
Check your shoes and socks before exercising to make sure they are
smooth and free of stones or bumps. Check your feet after exercising for
blisters, cuts, or scrapes.
- Warm up and cool down.
Stretch
or walk slowly for 5 to 10 minutes before and after exercise.
- Stick to a routine.
Try
to exercise at the same time each day. That way the effect on your blood
glucose level will be more predictable. An hour after a meal or a snack
is a good time.
- Wear a medical identification bracelet.
Keep something with you that lets people know you have diabetes.
- Test your blood glucose level before you
exercise.
If it's higher than
250 mg/dL and there are chemicals called ketones in your urine, don't
exercise. If you have type I diabetes and your glucose level is less
than 100 mg/dL, have a snack high in carbohydrates before exercising.
Your doctor may also want you to test your glucose both during and after
your exercise session.
- Drink lots of fluids.
Avoid
getting dehydrated by drinking a lot of fluids (skip drinks with
caffeine).
- Don't exercise if
your
feet or legs hurt, if you are out of breath, if the weather is very hot
or cold or if your blood pressure is high. Also, stop working out if you
start feeling sick, dizzy or winded, or if exercising becomes painful.
Watch Your Weight
This chart shows weights
that are 20 percent heavier than what is recommended for
medium-framed men and women. If your weight is at or above the amount
listed for your height, you may be at risk for diabetes, or your diabetes
may be harder to control.
|
Height
|
Women/ Weight (lbs.)
|
Men/ Weight (lbs.)
|
|
4' 9''
|
134
|
|
|
4' 10"
|
137
|
|
|
4' 11"
|
140
|
|
|
5' 0"
|
143
|
|
|
5' 1"
|
146
|
157
|
|
5' 2"
|
150
|
160
|
|
5' 3"
|
154
|
162
|
|
5' 4"
|
157
|
165
|
|
5' 5"
|
161
|
168
|
|
5' 6"
|
164
|
172
|
|
5' 7"
|
168
|
175
|
|
5' 8"
|
172
|
179
|
|
5' 9"
|
175
|
182
|
|
5' 10"
|
178
|
186
|
|
5' 11"
|
182
|
190
|
|
6' 0"
|
|
194
|
|
6' 1"
|
|
199
|
|
6' 2"
|
|
203
|
|
6' 3"
|
|
209
|
Source: American
Diabetes Association
Terms to Remember
Beta Cells:
Found in the pancreas (an organ near your stomach), these specialized
cells are the ones that produce insulin.
Glucose: The
sugar that your body's cells use for fuel.
Insulin:
A hormone that breaks down glucose so it can be used by your cells.
Ketones:
Toxins your body produces when it breaks down fat for energy because it
doesn't have enough insulin to break down glucose. Ketones can cause
vomiting, difficulty breathing, thirst, dry, itchy skin, or coma.
Immediate medical attention is necessary when ketones are persistently
found in the urine
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