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Obesity Basics: What Is It? How Is It Treated?

There is an epidemic of obesity in this country, health experts say. But what is obesity? How is it measured? Find out the answers to these questions and others by taking this quiz, based on information from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).

Gender words are used here to talk about anatomy and health risk. Please use this information in a way that works best for you and your provider as you talk about your care.

1. Body mass index (BMI) is the current standard for finding out whether someone is overweight or obese. BMI corrects for differences in height among people. Which BMI reading is considered obese?

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Body mass index is a way to estimate body fat by using math. A BMI of 30 or greater is considered obese. A BMI of 25 to 29.9 is considered overweight.

A. 30 B. 32 C. 35 D. All of the above

2. What portion of body fat falls in the obese category?

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Women usually have more body fat than men. Measuring body fat is difficult. The most accurate methods are to weigh a person underwater or with an X-ray test called a dual energy X-ray absorptiometry (DEXA). The DEXA scan is expensive. And you should have it only so many times because it uses radiation. Simpler methods are much less accurate. They involve measuring the thickness of the layer of fat just under the skin. Or sending a harmless amount of electricity through a person's body. These methods are popular in health clubs.

A. 15 percent in men; 20% in women B. 20% in men; 25% in women C. 25% in men; 30% in women D. 30% in men; 35% in women

3. How many American adults are considered obese?

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According to the latest statistics from the CDC, more than one-third of U.S. adults are obese. This means they have a BMI greater than 30. Everyone needs a certain amount of body fat. But extra body fat can put you at risk for a host of health problems.

A. 5% B. 12% C. 20% D. 33%

4. What causes obesity?

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Obesity occurs when a person takes in more calories than they burn. The cause of this imbalance of calories in and calories out differs from person to person. Genes, eating habits, physical activity, and mental health factors all play a part in obesity. Some nervous system conditions, endocrine problems, and certain medicines can cause some weight gain but usually not severe obesity.

A. Genetics B. Poor eating habits C. Lack of physical activity D. All of the above

5. Which of these serious health problems has been linked to obesity?

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Obesity is also linked to several kinds of cancer, including uterine (endometrial), breast (in postmenopausal women), and colorectal. According to the NIDDK, other health problems linked to obesity include osteoarthritis, gallstones, liver disease, gout, sleep apnea, and infertility.

A. Type 2 diabetes B. Heart disease C. High blood pressure D. Stroke E. All of the above

6. If you are considered obese, how much weight do you need to lose to bring about positive health changes?

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A 5% to 10% weight loss can lower blood pressure and cholesterol levels, the NIDDK says. A 5% to 7% weight loss can prevent type 2 diabetes from developing in people who are at high risk for the disease. But any weight-loss program should be for the long term. Obesity is a long-term (chronic) problem. Weight control should be considered a lifelong effort.

A. 1% B. 2% C. 5% D. 10% E. C or D

7. What is a healthy weight loss goal?

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Your weight-loss program should aim for a slow, steady loss. If you plan to lose more than 15 to 20 pounds, have any health problems, or take medicine regularly, discuss your plan with your healthcare provider before you begin, the NIDDK says. Your provider can look at your general health, your need to lose weight, and any health conditions that may be affected.

A. 1 to 2 pounds a week B. 4 pounds a week C. 5 pounds a week D. None of the above

8. How much physical activity should you aim for each week to help weight loss?

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Some experts say you may need to work up to 60 minutes of medium-level activity on most days of the weeks to lose weight. You will need to continue this exercise level to maintain your weight loss. If you haven't been exercising regularly, check with your healthcare provider before starting any exercise program. You don't have to do 30 (or 60) minutes all at one time. You can sneak activity into your day by taking the stairs instead of the elevator; walking and talking with a friend at lunch; or taking 2 to 3 short walking breaks at work. You can also walk on a treadmill at home while watching TV, for instance. It's important to choose an activity you enjoy so you'll stick with it.

A. 20 minutes on most days B. 30 minutes on most days C. 45 minutes each week D. 45 minutes every other week

9. If your healthcare provider advises weight-loss medicine, when can you expect to lose the most weight?

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After the first weight loss related to the medicine, a person's weight tends to level off or even increase for the remainder of treatment, the NIDDK says. Most weight-loss medicines are for short-term use only. These medicines are usually meant for people who are obese, not for those who are overweight or who want to lose a few pounds. Most of the medicines are available only by prescription except for orlistat, a lipase inhibitor that is the first FDA-approved nonprescription weight-loss medicine. The prescription form of orlistat is one medicine that may be used for a year, or as directed by your healthcare provider. It blocks the absorption of about 30% of fats consumed. It may be prescribed for a person who is overweight and also has high blood pressure, high cholesterol, or diabetes. Discuss with your healthcare provider which medicine is best for you. Ask how long you should take the medicine. Any amphetamine-based medicines are not advised for weight loss because of the potential for abuse or dependence. A person taking weight-loss medicine should also increase physical activity and improve their diet to maintain the weight loss for the long term.

A. In the first month B. In the first 2 months C. In the first 6 months D. In the first 9 months

10. Bariatric surgery may be advised for people with a BMI of more than 40. What does the procedure do?

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This surgery may also be advised for men who are more than 100 pounds overweight, or for women who are more than 80 pounds overweight. One of 2 types of procedures may be used. One type is called restrictive surgery. For this, parts of the stomach are closed off to make it smaller and restrict the amount of food that can be eaten at one sitting. Bariatric operations include laparoscopic adjustable gastric banding and vertical sleeve gastrectomy. These types of restrictive surgery don't change the way food is digested. The other type of surgery is malabsorptive surgery. This creates a new path for food. It bypasses most of the stomach, the duodenum (the first segment of the small intestine), and the jejunum (the second segment of the small intestine). This surgery reduces the amount of nutrients the body can absorb from food. Malabsorptive surgery may also entail removing parts of the stomach and bypassing the duodenum and jejunum. The malabsorptive procedures include the Roux-en-Y gastric bypass and the duodenal switch with biliopancreatic diversion. One risk with this type of surgery is nutritional deficiencies.

A. Closing off parts of the stomach to make it smaller B. Bypassing the stomach C. Removing parts of the stomach D. All of the above

Your score was:

Online Medical Reviewer: Freeborn, Donna, Phd, CNM, FNP
Online Medical Reviewer: Hurd, Robert, MD
Online Medical Reviewer: Turley, Raymond Kent, BSN, MSN, RN

Date Last Reviewed: 1/1/2023

© 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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