Step 1: Understanding Morbid Obesity

Return to Index Step 1: Understanding Morbid Obesity Step 2: The Health Risks of Obesity Step 3: Treatment Overview Step 4: How Weight Loss Surgery Might Help Step 5: Gastric Bypass Surgery Step 6: Vertical Banded Gastroplasty Step 7: Laparoscopic Adjustable Banding System Step 8: Post-Surgical Nutrition Step 9: Post-Surgical Exercise Step 10: Post-Surgical Lifestyle Changes Key Points Glossary

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Morbid obesity is a serious medical condition. If you are morbidly obese, it means that you are severely overweight, usually by at least 100 pounds. It also means that you have excessive amounts of body fat compared to healthy standards.

Fat thickness, which varies greatly from one person to another, depends on the size and number of your fat cells.

Knowing whether or not you are morbidly obese is important. This condition puts you at very high risk for a host of serious medical problems, including high blood pressure, diabetes and heart disease. Being morbidly obese may also hamper your ability to get around, expose you to possible discrimination or social stigma and may lower your self-esteem.

If you are morbidly obese, you should remember three important points:

Morbid obesity is not a sign of weakness, laziness or gluttony. It is a serious medical condition with serious medical consequences. Current research suggests that many factors work together to influence your weight. These include genetics, your eating habits as a child and adult, hormones and psychological factors.
You are not alone. Approximately 65 percent of all Americans are considered overweight, about 25 percent are considered obese, and about four percent are considered morbidly obese. All of these numbers are on the rise.
There is hope. Resources are available to help you avoid the medical consequences of morbid obesity.

How do I know if I'm morbidly obese?

A good way to assess your weight is to calculate your Body Mass Index (BMI). Your BMI estimates how much you should weigh based on your height. You can estimate your BMI by consulting our BMI chart or by using the handy calculator below:

Use the chart below to see what category you fall into, and whether you need to be concerned about your weight.

BMI	CATEGORY
Below 18.5	Underweight
18.5 - 24.9	Normal
25.0 - 29.9	Overweight
30.0 and Above	Obese
Over 40	Morbidly obese

Although your BMI is a simple way to evaluate whether your weight puts you at potential risk for health problems, a lot of other factors may also affect your health. These include:

General health history
Level of physical activity
Diet
Waist measurement
Smoking history
Family health history
Blood pressure
Blood sugar
Blood cholesterol levels

Your health care provider can help you evaluate your BMI and these other factors to determine your overall health picture.

Weight gain in the area of the waist and above (apple type) is more dangerous than weight gained around the hips and flank area (pear type). Fat cells in the upper body have different qualities than those found in hips and thighs.

The BMI calculation tool is based on information in Willett WC, Dietz WH, Colditz GA. Guidelines for healthy weight. New England Journal of Medicine. 1999;341(6):427-434.

Review Date: October 15, 2004
Reviewed By: Jacqueline A. Hart, M.D., Department of Internal Medicine, Newton-Wellesley Hospital, Boston, MA, and Rosalyn Carson-DeWitt, M.D.

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