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.

Body mass index (BMI) is the current standard for determining whether someone is overweight or obese. Which BMI reading is considered obese?
A. 30
B. 32
C. 35
D. All of the above

How much body fat is considered obese?
A. 15 percent in women; 20 percent in men
B. 20 percent in women; 25 percent in men
C. 25 percent in women; 30 percent in men
D. 30 percent in women; 35 percent in men

How many American adults are considered obese?
A. 5 percent
B. 12 percent
C. 20 percent
D. 27 percent

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

Which of these serious health problems has/have been linked to obesity?
A. Type 2 diabetes
B. Heart disease
C. High blood pressure
D. Stroke
E. All of the above

If you are considered obese, what percentage of weight loss will bring about positive health changes?
A. 1 percent
B. 2 percent
C. 5 percent
D. 10 percent
E. C and D

What is a healthy weight loss goal?
A. One pound a week
B. Four pounds a week
C. Five pounds a week
D. None of the above

How much physical activity should you aim for each week to help weight loss?
A. 20 minutes on most days
B. 30 minutes on most days
C. 45 minutes on most days
D. 45 minutes every other day

If your doctor recommends weight-loss medication, when can you expect to lose the most weight?
A. In the first month
B. In the first two months
C. In the first six months
D. In the first nine months

Bariatric surgery may be recommended for people with a BMI of more than 40 (or more than 100 pounds overweight in men, 80 pounds in women). What does the procedure involve?
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