What is the Body mass index?
Preferred weight for height standard- express the ration of a
persons weight to the square of their height
BMI= weight kg/ height (M)2 or BMI= weight in pounds x 704.5/ height
Weight and risk categories associated with BMI result
Risk for type 2 diabetes, high blood pressure, heart disease, and
other diseases increases when BMI value is above 30.
Mortality rate increase above BMI value of 30, a higher or lower
bmi increases the risk of dying prematurely
Underweight bmi less then 18.5 kg/m increases the risk for
infections and illness due to weekend immune system,
menstrual irregularities, and infertility in both men and women,
also increased risk for premature death
Healthy weight 18.5- 24.9 kg
Overweight 25.0- 29.9 kg- moderate risk- increased risk for high
blood pressure, heart disease, type 2 diabetes, sleep disorders,
gallstones, gynecological abnormalities (many people who are
overweight will eventually become obese)
Obesity: class 1(30.0- 34.9) high risk, class 2 35.0-39.9 very high
risk, Class 3 40.0 or higher extremely high risk (morbidly
obesity) hypertension, elevated cholesterol, dyslipidemia, type 2
diabetes, heart disease, stroke, gallbladder disease,
osteoarthritis, sleep apnea, cancers such as breast, endometrial,
gallbladder, menstrual irregularities, depression, gestational
diabetes, premature death, neural tube defects, complications
during labor and delivery
What are the most accurate body mass composition assessments?
Most accurate- skin folds, hydrostatic weighing, Bod Pod, DXA (most
What % of body fat is risky for men and women?