Prevalence and Incidence of Overweight


advertisement

About prevalence and incidence statistics: The term 'prevalence' of Overweight usually refers to the estimated population of people who are managing Overweight at any given time. The term 'incidence' of Overweight refers to the annual diagnosis rate, or the number of new cases of Overweight diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Prevalance of Overweight: 97.1 million American adults
Prevalance Rate: approx 1 in 3 or 35.70% or 97.1 million people in USA [about data]
Worldwide prevalence of Overweight:over 1 billion adults worldwide (WHO World Health Report, 2003)
Prevalance of Overweight: More than 60 percent of Americans aged 20 years and older are overweight. One-quarter of American adults are also obese 1 ... Obesity affects about one in four adult Americans, and during any one year, over half of Americans go on a weight-loss diet or are trying to maintain their weight.2

Prevelance of Overweight discussion: In the United States at least one child in five is overweight and the number of overweight children continues to grow. Over the last 2 decades, this number has increased by more than 50 percent, and the number of "extremely" overweight children has nearly doubled (Arch Pediatr Adolesc Med. 1995: 149: 1085-91).3

More than half of U.S. adults are overweight (BMI 25, which includes those who are obese).5

All adults (20+ years old): 97.1 million (54.9 percent)
Women (20+ years old): 46.9 million (50.7 percent)
Men (20+ years old): 50.2 million (59.4 percent)
4

Less than half of U.S. adults are a healthy weight (BMI 19 to < 25).5

All adults (20+ years old): 73.2 million (41.4 percent)
Women (20+ years old): 40.3 million (43.6 percent)
Men (20+ years old): 32.9 million (39.0 percent)
4

The prevalence has steadily increased over the years among nearly all* racial/ethnic groups,5 as shown in the chart below. For example, from 1960 to 1994, the prevalence of overweight (BMI 25 to < 30) increased from 31.6 to 32.6 percent in U.S. adults. The prevalence of obesity (BMI 30) during this same time period increased from 13.4 to 22.3 percent--a relative increase of more than 50 percent--with most of this rise occurring in the past decade. The prevalence of overweight and obesity increases with advancing age until a person reaches his or her sixties, when it starts to decline.5 From 1991 to 1998, obesity increased in every state of the United States, in both genders, and across all races/ethnicities, age groups, educational levels, and smoking statuses.10

* An exception is the prevalence of overweight in white men in their twenties to forties, which decreased from the early 1970s to late 1970s.4

The age-adjusted prevalence of combined overweight and obesity (BMI 25) in racial/ethnic minorities--especially minority women--is generally higher than in whites in the United States.5

Black women (20+ years old): 65.8 percent
Mexican American women (20+ years old): 65.9 percent
White women (20+ years old): 49.2 percent
Black men (20+ years old): 56.5 percent
Mexican American men (20+ years old): 63.9 percent
White men (20+ years old): 61.0 percent

Studies using this definition of overweight and obesity (BMI 25) provide ethnicity-specific data only for these three racial-ethnic groups. Studies using other definitions of overweight and obesity, as described earlier, find a high prevalence of overweight and obesity among Hispanics and Native Americans. The prevalence of overweight and obesity in Asian Americans is lower than in the general population.4

While there is no generally accepted definition for obesity as distinct from overweight in children and adolescents, the prevalence of overweight is increasing for children and adolescents in the United States. Approximately 11 percent of children (ages 6-11) and 11 percent of adolescents (ages 12-17) were overweight* in 1988 to 1994--up from approximately 5 percent in the 1960s and 1970s.11

* Overweight is defined by the sex- and age-specific 95th percentile cutoff points of the revised NCHS/CDC growth charts (preliminary data). The revised growth charts incorporate smoothed BMI percentiles and are based on data from NHES II (1963-1965) and III (1966-1970), and NHANES I (1971-1974), II (1976-1980), and III (1988-1994).4

According to the Surgeon General of the United States, overweight and obesity are increasing in both men and women. The latest estimates are that 34 percent of U.S. adults aged 20 to 74 years are overweight, and an additional 27 percent are obese. About half of all women aged 20 to 74 are overweight or obese. The percentages of obese women among African American, Native American and Mexican American women are even higher.5

Prevelance statistics about Overweight: The following statistics relate to the prevalence of Overweight:

  • 35% of adults overweight in the USA (US Government Statistics)
  • Overweight prevalence statistics for men in the USA:
    • 58% of men aged 20-34 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 67.6% of men aged 35-44 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 71.3% of men aged 45-54 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 72.5% of men aged 55-64 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 77.2% of men aged 65-74 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 66.4% of men aged over 75 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
  • Overweight prevalence statistics for women in the USA:
    • 51.5% of women aged 20-34 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 63.6% of women aged 35-44 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 64.7% of women aged 45-54 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 73.1% of women aged 55-64 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 70.1% of women aged 65-74 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
    • 59.6% of women aged over 75 are overweight in the US 1999-2000 (Health United States, 2003, NCHS)
  • 50% of women aged 20 to 74 are overweight or obese in the US (The National Women’s Health Information Center)
  • 12% of adolescents aged 12 to 17 overweight in the USA (US Government Statistics)
  • 6% of adolescents aged 12 to 17 overweight in the USA 1976-80 (US Government Statistics)
  • 9% increase in adults overweight in the USA 1976-80 (US Government Statistics)
  • 14% of children aged 6 to 11 overweight in the USA 1988-94 (US Government Statistics)
  • 9% increase in adults overweight in the USA 1976-80 (US Government Statistics)
  • Estimated 22 million children under 5 years are overweight worldwide(World Heart Federation Fact-Sheet, 2002)
  • 1 in 4 children are overweight in the USA (World Heart Federation Fact-Sheet, 2002)
  • 14% of women overweight in Canada 1996/97 (Statistics Canada, National Population Health Survey, Health Canada, 1996/97)
  • 25% of men overweight in Canada 1996/97 (Statistics Canada, National Population Health Survey, Health Canada, 1996/97)
  • 517 women per 1,000 population were overweight or obese in Australia 1999-2000 (Australia’s Health 2004, AIHW)
  • 673 men per 1,000 population were overweight or obese in Australia 1999-2000 (Australia’s Health 2004, AIHW)
  • 298 women per 1,000 population were overweight in Australia 1999-2000 (Australia’s Health 2004, AIHW)
  • 482 men per 1,000 population were overweight in Australia 1999-2000 (Australia’s Health 2004, AIHW)
  • 51.9% of female population are overweight in Australia 1999-2001 (Australia’s Health 2004, AIHW)
  • 67.4% of male population are overweight in Australia 1999-2001 (Australia’s Health 2004, AIHW)
  • 18% of population in China (WHO World Health Report, 2003)


Footnotes:
1. excerpt from Understanding Adult Obesity: NIDDK
2. excerpt from Choosing a Safe and Successful Weight-Loss Program: NIDDK
3. excerpt from Helping Your Overweight Child: NIDDK
4. excerpt from NIDDK _ Statistics Related to Overweight and Obesity: NIDDK
5. excerpt from Obesity: NWHIC

Medical Tools & Articles:


Next articles:

Medical Articles:
 
 
CureResearch.comTM Copyright © 2010 Health Grades, Inc. All rights reserved.
Home | Contents | Search | Site Map | Feedback | Contact Us | Terms of Use | Privacy Policy | About Us | Advertise