II. Diagnosis: Obesity
-
Body Mass Index (BMI in kg/m2) Grading: Non-Asian Descent
- BMI 25 to 30: Overweight
- BMI 30 to 35: Class 1 Obesity
- BMI 35 to 40: Class 2 Obesity
- BMI >40: Class 3 Obesity (Severe Obesity)
-
Body Mass Index (BMI in kg/m2) Grading: Asian Descent
- BMI 23 to 27.5: Overweight
- BMI 27.5 to 32.5: Class 1 Obesity
- BMI 32.5 to 37.5: Class 2 Obesity
- BMI >37.5: Class 3 Obesity (Severe Obesity)
-
Waist Circumference
Overweight Criteria
- Female >=35 inches (>=31 in asian descent)
- Male >=40 inches (>=35 in asian descent)
- Body Fat Percent Overweight Criteria
- Female >= 32%
- Male >= 25%
- Prior Obesity definitions
- Men: 20% over estimated Ideal Weight
- Women: 30% over estimated Ideal Weight
III. Exam: Most useful Measurements
- Body Mass Index (BMI)
- Anthropometry
- Neck circumference (best predictor of Sleep Apnea)
- Men: >17 inch (42.5 cm) neck circumference
- Women: >16 inch (40.6 cm) neck circumference
IV. Exam: Other Measurements
- Skin-fold measurement
- Very operator dependent
- Normal subcutaneous fat
- Men: 11%
- Women: 18%
- Underwater weighing
- Gold standard
- Dependent on bone density
- Bioelectrical impedance
- Safe, noninvasive, fairly reliable
- Dependent on hydration
V. Resources
- Frank (1998) J Am Diet Assoc 98:S44-48 [PubMed]
- Keating (2024) Am Fam Physician 110(2): 145-56 [PubMed]
- Lyznicki (2001) Am Fam Physician 63(11):2185-96 [PubMed]
- Rippe (1998) J Am Diet Assoc 98:S9-15 [PubMed]
- Speer (1997) Phys Sportsmed 25:94-107 [PubMed]
- (1998) AOA Treatment Adult Obesity, 2nd edition
- (1998) Obesity Res 6(suppl 2):51S-209S
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Related Studies
| Definition (MEDLINEPLUS) |
Obesity means having too much body fat. It is different from being overweight, which means weighing too much. The weight may come from muscle, bone, fat, and/or body water. Both terms mean that a person's weight is greater than what's considered healthy for his or her height. Obesity occurs over time when you eat more calories than you use. The balance between calories-in and calories-out differs for each person. Factors that might affect your weight include your genetic makeup, overeating, eating high-fat foods, and not being physically active. Being obese increases your risk of diabetes, heart disease, stroke, arthritis, and some cancers. If you are obese, losing even 5 to 10 percent of your weight can delay or prevent some of these diseases. For example, that means losing 10 to 20 pounds if you weigh 200 pounds. NIH: National Institute of Diabetes and Digestive and Kidney Diseases |
| Definition (NCI_NCI-GLOSS) | A condition marked by an abnormally high, unhealthy amount of body fat. |
| Definition (NCI_CTCAE) | A disorder characterized by having a high amount of body fat. |
| Definition (NCI) | Having a high amount of body fat (body mass index [BMI] of 30 or more). |
| Definition (CSP) | excessively high accumulation of body fat or adipose tissue in relation to lean body mass; the amount of body fat (or adiposity) includes concern for both the distribution of fat throughout the body and the size of the adipose tissue deposits; individuals are usually at high clinical risk because of excess amount of body fat (BMI greater than 30). |
| Definition (MSH) | A status with BODY WEIGHT that is grossly above the acceptable or desirable weight, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY). |
| Concepts | Disease or Syndrome (T047) |
| MSH | D009765 |
| ICD9 | 278.00 |
| ICD10 | E66 , E66.9 |
| SnomedCT | 5476005, 154776002, 190963004, 414916001, 414915002 |
| LNC | LA6301-1 |
| English | Obesity, Obesity, unspecified, OBESITY, obesity (diagnosis), obesity, Obesity NOS, Obesity [Disease/Finding], obese, adiposity, Obesity, NOS, Obesity [Ambiguous], Obese, Obese (finding), Obesity (disorder) |
| French | OBESITE, Obésité, non précisée, Obésité |
| Portuguese | OBESIDADE, Obesidade NE, Obesidade |
| Spanish | OBESIDAD, Obesidad no especificada, obesidad (trastorno), obesidad, obeso (hallazgo), obeso, Obesidad |
| Dutch | obesitas niet-gespecificeerd, Vetzucht, niet gespecificeerd, zwaarlijvigheid, Adipositas, Vetzucht |
| German | Fettleibigkeit, unspezifisch, ADIPOSITAS, Adipositas, nicht naeher bezeichnet, Adipositas, Fettsucht, Obesitas |
| Italian | Obesità, non specificata, Obesità |
| Japanese | 肥満, 肥満、詳細不明, ﾋﾏﾝ, ﾋﾏﾝｼｮｳｻｲﾌﾒｲ |
| Swedish | Fetma |
| Czech | obezita, Obezita, blíže neurčená, Obezita, otylost |
| Finnish | Lihavuus |
| Russian | OZHIRENIE, ОЖИРЕНИЕ |
| Korean | 상세불명의 비만, 비만 |
| Polish | Otyłość |
| Hungarian | Obesitas, nem meghatározott, Obesitas |
| Croatian | Gojaznost, Pretilost |
| Norwegian | Fedme |
Ontology: Obesity screen (C0740216)
| Concepts | Therapeutic or Preventive Procedure (T061) |
| SnomedCT | 171192001, 148407009, 268551005 |
| English | Obesity screen, screening obesity, obesity screening, Weight screen (& [obesity]) (procedure), Weight screen (& [obesity]), Weight screen, Obesity screening (procedure), Obesity screening |
| Spanish | cribado para obesidad, detección selectiva de obesidad (procedimiento), screening de obesidad, cribaje para obesidad, pesquisa para obesidad, rastreo para obesidad, detección selectiva para obesidad, screening para obesidad, tamizaje de obesidad, cribado para la detección de obesidad, tamizaje para obesidad, cribado de obesidad, cribado para la detección de obesidad (procedimiento), pesquisa de obesidad, detección selectiva de obesidad |
