What is BMI

The Body Mass Index (BMI), is a widely used index. It is an indication of the degree of obesity of an individual, approximately identifying the trend of body fat. BMI provides a better prognosis of diseases, than weight per se. A high BMI is associated with health problems such as cardiovascular disease, type 2 diabetes and some cancers (CDC, 2011). A low BMI is also a mortality rate indicator, particularly for ages over 65 years old (Sedell & Visscher, 2000).

Bibliography

Centers for Disease Control and Prevention (CDC). (2011) Body Mass Index.
http://m.cdc.gov/en/HealthSafetyTopics/HealthyLiving/HealthyWeight/AssessingYourWeight/BodyMassIndex/AboutBMIAdults Accessed September 2013

Seidell JC, Visscher TL. (2000). Body weight and weight change and their health implications for the elderly. European Journal of Clinical Nutrition. 54 Suppl 3:S33-9.

Body Mass Index

BMI for adults is calculated by dividing weight by height squared.

BMI
BMI = 18.5-24.9 → normal weight

BMI> 25-29.9 → overweight

BMI> 30 → Obese

BMI does not take into consideration muscle and bone mass, age and sex of the individual, and may lead to erroneous results in two possible cases. When the person works out or when his muscle mass is large with higher BMI without having more fat. Another case is when a person because of age or a medical condition, has lost muscle mass and has a lower BMI without having less fat.