Table 2. Age-adjusted* prevalence of overweight and obesity among U.S. adults, age 20-74 years

 

NHES I
1960-62
n=6,126

NHANES I
1971-74
n=12,911

NHANES II
1976-80
n=11,765

NHANES III
1988-94
n=14,468

NHANES
1999-2000
n=3,603

 NHANES
2001-02
n=3,916		 NHANES
2003-04
n=3,756		 NHANES
2005-06
n=3,835
Overweight (BMI greater than or equal to 25.0 and less than 30.0) 31.5 32.3 32.1 32.7 33.6 34.4 33.4 32.2
Obese (BMI greater than or equal to 30.0) 13.4

14.5

15.0

23.2

30.9

 31.3 32.9 35.1
Extremely obese (BMI greater than or equal to 40.0) 0.9 1.3 1.4 3.0 5.0 5.4 5.1 6.2

*Age-adjusted by the direct method to the year 2000 U.S. Bureau of the Census estimates using the age groups 20-39, 40-59, and 60-74 years.
**NHANES II did not include individuals over 74 years of age, thus trend estimates are based on age 20-74 years.