A Body Shape Index Calculator
- Other physiology tools:
- Body Mass Index
- Corpulence Index
- Mean Arterial Pressure
- Trefethen's New BMI
- and many more »
Please refer to the tables below to compare your results. Keep in mind when submitting your data that this tool is intended solely for illustrative and educational purposes.
| Mortality Relative Risk | ABSIz-score range* | |
|---|---|---|
| Very low | -0.868 or less | |
| Low | -0.868 to -0.272 | |
| Average | -0.272 to +0.229 | |
| High | +0.229 to +0.798 | |
| Very high | +0.798 or more | |
| *ABSIz-score = ((ABSI − ABSImean)/ABSIstandard deviation) and computed as in Krakauer & Krakauer, 2012 and as in Krakauer's ABSI Calculator (Krakauer, 2012).
ABSI has been linked to overall mortality and cardiovascular risk in studies, highlighting its usefulness in evaluating cardio-metabolic risks (Bertoli, et al., 2017). In a significant European cohort study, ABSI was found to provide better mortality risk stratification than other indices of abdominal obesity (Christakoudi, et al., 2020). | ||
| Degree of Central Adiposity | Range | Relative Risk |
|---|---|---|
| Healthy | 0.4 to 0.49 | No Increased |
| Increased | 0.5 to 0.59 | Increased |
| High | 0.6 or more | Further Increased |
| *The NICE guidelines outline adiposity boundary values that are applicable to individuals of any ethnicity, gender, and having a Body Mass Index (BMI) under 35, including those with high muscle mass. The guidelines indicate that elevated levels of central adiposity pose risks to health, including type 2 diabetes, hypertension, and cardiovascular disease. Moreover, the same boundary values have been suggested by NICE for children aged five years and above (NICE, 2022). | ||
| Body Mass | BMI (kg/m2) | BMIprime* |
|---|---|---|
| Underweight | 18.5 or less | 0.740 or less |
| Normal (healthy) weight | 18.5 to 24.9 | 0.740 to 0.996 |
| Overweight | 25.0 to 29.9 | 1.000 to 1.196 |
| Obese Class I (Moderately obese) | 30.0 to 34.9 | 1.200 to 1.396 |
| Obese Class II (Severely obese) | 35.0 to 39.9 | 1.400 to 1.596 |
| Obese Class III (Very severely obese) | 40.0 or more | 1.600 or more |
| *BMIprime = BMI/25. For populations in South East Asia and South China, it is recommended to calculate BMI Prime using an upper limit BMI of 23 in the denominator instead of 25. This allows for easy comparison between populations that have different optimal upper-limit BMI values, as enabled by the BMI Prime calculation.
BMI categories defined by the World Health Organization. The WHO regards an adult BMI of less than 18.5 as underweight and possibly indicative of malnutrition, an eating disorder, or other health problems, while a BMI of 25 or more is considered overweight and 30 or more is considered obese (WHO, 2005; 1995). | ||
Body Shape Index (2023, January 21). In Wikipedia. https://en.wikipedia.org/wiki/Body_shape_index
Waist to Height Ratio (2023, January 21). In Wikipedia. https://en.wikipedia.org/wiki/Waist-to-height_ratio
Body Mass Index (2023, January 5). In Wikipedia. https://en.wikipedia.org/wiki/Body_mass_index
Bertoli, et al. (2017). Association of Body Shape Index (ABSI) with cardio-metabolic risk factors: A cross-sectional study of 6081 Caucasian adults. PLoS ONE. 12(9): e0185013. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5612697/pdf/pone.0185013.pdf
Christacoudi, S. et. al. (2020). A Body Shape Index (ABSI) achieves better mortality risk stratification than alternative indices of abdominal obesity: results from a large European cohort. Scientific Reports, 10:14541. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471961/pdf/41598_2020_Article_71302.pdf
Krakauer, N. Y. (2012). ABSI Calculator. https://nirkrakauer.net/sw/absi-calculator.html
Krakauer, N. Y. & Krakauer, J. C. (2012, July 7). PLoS ONE 7(7): e39504.A New Body Shape Index Predicts Mortality Hazard Independently of Body Mass Index. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3399847/pdf/pone.0039504.pdf
NICE (2022, September 8). Obesity: identification, assessment and management. https://www.nice.org.uk/guidance/cg189
WHO (2005). The SuRF Report 2. https://apps.who.int/iris/bitstream/handle/10665/43190/9241593024_eng.pdf
WHO (1995). The Use and Interpretation of Anthropometry. http://apps.who.int/iris/bitstream/handle/10665/37003/WHO_TRS_854.pdf;jsessionid=D8CF3AF0777FE4D3F4C0A94FF9652469?sequence=1