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Obesity and
Overweight
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Diseases & Conditions
A-Z |
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From
MayoClinic.com
Treatment
The good news is that losing even modest amounts of weight can lower
your blood pressure, reduce your risk of cardiovascular disease and
stroke, improve glucose control in diabetes, improve signs and symptoms
of osteoarthritis and sleep apnea, and lower your risk of cancer.
The amount of weight you need to lose to improve your health may be much
less than what you feel you need to lose. The first goal in dealing with
obesity is to achieve and maintain a healthier weight.
That usually requires reducing your weight by approximately 5 percent to
10 percent. That means that if you weigh 200 pounds and are obese by BMI
standards, you would need to lose at least 10 to 20 pounds. That doesn't
mean you have to stop there. But it's a place to start. Slow and steady
weight loss of 1 or 2 pounds a week is considered the safest way to lose
weight and the best way to keep it off.
In many cases, losing weight can be accomplished by committing to eating
a healthier diet, exercising and changing behaviors. Other treatments
for obesity include prescription medications and surgery.
Dietary changes
One
way to lose weight is to consume fewer calories.
The number of calories you need to maintain weight each day depends on
several factors, including your age and activity level. Ask your doctor
to help you determine your calorie goals to lose weight. He or she may
recommend that you also work with a dietitian or a reputable weight-loss
program.
Over-the-counter liquid meal replacements, such as Slim-Fast, also cut
calories. These plans suggest that you replace one or two meals with
their product a low-calorie shake then eat snacks of vegetables and
fruits and a healthy, balanced third meal that is low in fat and
calories. Studies have shown that this can be as effective as a
traditional calorie-controlled diet.
Popular diets
Among the many popular diets in circulation are:
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The Atkins
diet.
Robert Atkins, M.D., was a pioneering proponent of a high-protein,
low-carbohydrate diet back in the 1970s when his Dr. Atkins' Diet
Revolution hit the bookstores. His ideas went out of vogue with
the low-fat trend in the 1990s. However, the diet has since become
popular again, and Dr. Atkins' New Diet Revolution is a
best-selling book. The Atkins diet espouses the idea that
carbohydrates promote insulin production, which leads to weight gain
and other health risks. The Atkins diet, therefore, limits
carbohydrates to 20 to 40 grams a day initially. Most grains, beans,
fruits, breads, pastas and vegetables are excluded. You can eat as
much meat, eggs, cheese, butter and cream as you want under the
Atkins diet. Without enough dietary carbohydrates, your body begins
to burn its stored carbohydrates for energy which releases a lot
of water weight. Your body also starts burning some fat, but not as
efficiently as exercise would. Burning fat without carbohydrates
creates byproducts called ketones that build up in your bloodstream.
These will be processed through your kidneys before they're
eliminated. Ketones do suppress appetite, but they also cause
fatigue and nausea. Some studies have shown a greater initial weight
loss on the Atkins diet. However, after one year, there was no major
difference in weight loss, compared with that from a traditional
calorie-controlled diet. The long-term health effects of this diet
are unknown and potentially risky.
-
The Zone.
Compared with Dr. Atkins, Barry Sears, Ph.D., author of The Zone,
is downright permissive when it comes to carbohydrates. Dr. Sears
claims the key to successful weight loss is a diet in which every
meal has a carbohydrate-to-protein ratio of 4-to-3. For overweight
people he recommends caloric proportions of 40 percent carbohydrate,
30 percent protein and 30 percent fat. With these proportions, says
Dr. Sears, dieters experience less hunger, increased energy, peak
physical performance, improved mental focus and decreased illness.
The Zone diet's thrust is to sustain a specific ratio of the
hormones insulin and glucagon, important regulators of carbohydrate
metabolism. Maintaining the right proportion of these hormones,
according to Dr. Sears, contributes to the balancing of eicosanoids,
which are hormone-like substances derived from polyunsaturated fatty
acids. The best way to enter "the zone," says Dr. Sears, is by
preserving your eicosanoid balance. However, there's little evidence
that eicosanoids are primarily responsible for diseases or that
disease risk can be manipulated through changing eicosanoids in the
diet. People will lose weight if they follow the prescribed diet in
the book because it's low in total calories and emphasizes fruits
and vegetables. A typical Zone diet consists of fewer than 1,000
calories a day.
-
South Beach
Diet.
This diet, developed by Arthur Agatston, M.D., is basically a
modified Atkins program. It isn't as restrictive in carbohydrates as
the Atkins diet, except during the first two weeks of the diet.
After the first two weeks, the South Beach Diet very much restricts
refined carbohydrates but allows whole grains. As with the Atkins
diet, the initial weight loss may not make much of a difference in
the long run.
-
Sugar Busters.
When you consider that Americans each consume nearly 3 pounds of
sugar a week, the premise of Sugar Busters, "Cut sugar to trim fat,"
may seem like one whose time has come. But the concept which lumps
in whole foods such as potatoes, corn and carrots with refined
sugars found in cakes, candies and sodas goes too far. Moreover,
although author H. Leighton Steward and associates don't advocate
the heavy fats of Dr. Atkins, the diet still promotes its fair share
of rich foods. Cutting back on sugar is only one aspect of healthy
dietary changes. Without making any other nutritional alterations,
and particularly when encouraging the intake of saturated fat and
decreasing beneficial vegetables, this diet is unlikely to help you
lose weight or at least keep it off over the long term.
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Grapefruit
diet.
Although there are many versions of this plan one even erroneously
calls itself the Mayo Clinic Diet all require you to eat half a
grapefruit before every meal to reap the benefits of the fruit's
so-called fat-burning enzymes. Calories typically are limited to
fewer than 800 a day, although some versions require that you eat
until you are full. Grapefruit has no fat, is low in calories and
sodium, and is packed with vitamin C. But the very low calories
and deficits in protein, fiber and several important vitamins and
minerals can make this diet dangerous.
-
Cabbage soup
diet.
What could be simpler? Eat as much cabbage soup as you want for
seven days and you'll lose 10 to 15 pounds. Other foods, too, are
prescribed during the weeklong program, including potatoes, fruit
juices and some vegetables. The only problem is that cabbage soup
proponents report feeling lightheaded and weak because the diet is
too low in protein, vitamins and complex carbohydrates. You may lose
weight, but you'll probably be too queasy to enjoy it.
Fad diets like these and others promote quick-and-easy weight loss. You
may lose the weight quickly and relatively easily, but you'll gain it
back. Fad diets don't offer a permanent, healthy solution to the problem
of obesity.
Increased physical activity
Another way to lose weight is to increase physical activity.
Adding physical activity to your life doesn't mean you have to wear a
sweat suit every day. A few minutes of walking or stair climbing can be
as good for you as structured exercise. Here are some other simple ways
to add more activity to your day:
-
Take the stairs
not the elevator.
-
Park in the
farthest spot in the parking lot.
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Walk or bike to
work or to the store.
-
Walk during your
lunch hour.
-
Play with your
children instead of watching them play.
-
Walk with your
family after dinner.
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Do weekend chores
the physical way use a push mower to mow the lawn or wash your car
manually.
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Buy an exercise
bike and pedal during TV shows or while talking on the phone.
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Use a pedometer
and try to increase the number of steps you walk each day.
Even fidgeting helps burns calories. A Mayo Clinic study found that
people who fidget burn hundreds of extra calories.
In addition to becoming more active in your daily life, talk to your
doctor about devising a structured exercise plan. Ideally, an exercise
plan to help you lose weight should include regular aerobic exercise,
such as walking, and strength training, such as lifting weights.
If you're obese, particularly if you're unfit and have health problems,
check with your doctor before starting an exercise program.
Behavior change
To
lose weight and keep it off, you must make changes in your lifestyle.
Changing your lifestyle is more than choosing different foods and
putting more activity into your day. It also involves changing your
approach to eating and activity, which means changing how you think,
feel and act.
Research has demonstrated that a number of tools and tips are effective
in helping you change. Follow these tips for change:
-
Motivate
yourself.
No one can make you lose weight. In fact, increased external
pressure often from people close to you may only make matters
worse. Likewise, trying to lose weight to satisfy someone else
rarely works either. Make diet and exercise changes to please
yourself.
-
Make lifestyle
changes a priority.
As you're planning to launch new weight-related lifestyle changes,
make sure you've resolved other pressing problems in your life. It
takes a lot of energy to change habits, and you want to be sure
you're focused on the matter at hand.
-
Have a plan.
Work out a strategy that will gradually change the habits and
attitudes that may have undermined your past efforts to lose weight.
Choose a definite start date. Consider how often and how long you
will exercise. Determine a realistic eating plan that includes
plenty of water, fruits and vegetables. Write everything down: When
and where will you do the steps in your plan? How will your plan fit
into your schedule? What are the potential roadblocks, and how will
you deal with them?
-
Set small
goals.
Remember that you're in this for the long haul. You're making
lifestyle changes, and the goals you've written down are your first
baby steps in that direction. Anything you undertake too intensely
or too vigorously will quickly become uncomfortable, and you're more
likely to give it up.
-
Surround
yourself with good examples.
As you set your goals, it helps to surround yourself with good
examples. Magazines such as Health, Shape and Cooking
Light include plenty of real-life stories, healthy and easy
recipes, exercise tips and interesting facts about fitness. Even if
you eat meat, a publication such as Vegetarian Times can
provide a wealth of low-fat recipes.
-
Avoid food
triggers.
Distract yourself from your desire to eat with something positive,
such as calling a friend. Practice saying no to unhealthy foods and
big portions. Eat when you're actually hungry not when the clock
says it's time to eat. When you eat, focus on eating. Serve your
meals on smaller plates to make less food seem like more. In
general, store food out of sight and don't keep junk foods around.
-
Keep a record.
Ask your doctor how often you should weigh yourself as you work to
lose weight. Your doctor may also recommend that you keep a food and
activity diary periodically, so you can reinforce good habits and
discover any behaviors that you may need to improve. Remember that
success isn't defined only by actual weight lost. In fact, be sure
to track other important health parameters such as blood pressure,
cholesterol levels and overall fitness.
-
Focus on the
positive.
Rather than focusing on what you can't eat, focus on what you can
eat. Look at what new tastes and activities you can discover that
will enhance your health.
-
Don't give up.
So much in American culture conspires to make and keep you
overweight. You will have setbacks. Don't expect perfection. But
don't give up. Use relapses to get back on track. Motivate yourself
with healthy rewards when you reach goals.
Dealing with obesity may mean taking a hard look at how you live and
making some tough changes. It may be helpful to talk to a weight-loss
specialist or others trying to lose weight who can help you think of
food and exercise in a new light.
Medications for weight loss
Prescription weight-loss drugs aren't for people who just want to lose a
few pounds for cosmetic reasons. They're for people with a BMI of 30 or
higher or for those with a BMI of 27 or greater who have health problems
that may improve with weight loss.
The two main prescription weight-loss medications are:
-
Sibutramine (Meridia).
This drug changes your brain chemistry, making you feel full more
quickly. Though Meridia generally helps you lose more weight than
you could through diet and exercise alone, it's no magic bullet. In
a one-year study, Meridia users lost an average of 7 to 10 pounds
more than did people simply following a low-calorie diet and taking
a placebo. Side effects can include increased blood pressure,
headache, dry mouth, constipation and insomnia.
-
Orlistat (Xenical).
This drug inhibits the absorption of fat in your intestines. It
blocks the action of the enzyme lipase in your digestive tract.
Lipase breaks down dietary fat so that your body can absorb it.
Orlistat can prevent the absorption of up to 30 percent of dietary
fat. Unabsorbed fat is eliminated in the stool. Orlistat may also
improve weight loss by discouraging you from eating an excessive
amount of fat. Side effects associated with the drug include oily
and frequent bowel movements. Side effects are generally made worse
by increased fat intake but improve with decreased fat intake.
Average weight loss with Xenical is modest and similar to what you
could expect with Meridia. Because Xenical blocks absorption of some
nutrients, your doctor will recommend that you also take a
multivitamin.
If you're among those who can benefit from weight-loss medication,
you'll likely need to take it indefinitely. When drug treatment is
stopped, much or all of the excess weight generally returns. The dilemma
with taking the drugs indefinitely is that the most commonly used
prescription drugs have been studied for only a short period of time.
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is not meant to substitute for the independent medical
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