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|To measure waist circumference, 1) locate the
upper hip bone and the top of the right iliac crest, 2) place the measuring
tape in a horizontal plane around the abdomen at the iliac crest, 3) ensure
that the tape is snug but does not compress the skin, 4) the tape should be
parallel to floor, and 5) record the measurement at the end of a normal
Men are at increased relative risk if they have a waist circumference greater than 40 inches (102 cm); women are at an increased relative risk if they have a waist circumference greater than 35 inches (88 cm).
There are ethnic- and age-related differences in body fat distribution that may affect the predictive validity of waist circumference as a surrogate for abdominal fat.
Heterogeneity of composition of abdominal tissues, in particular adipose tissue and skeletal muscle, and their location-specific and changing relations with metabolic factors and CV risk factors in different ethnic groups do not allow a simple definition of abdominal obesity that could be applied uniformly. In particular, Asians appear to have higher morbidity at lower cutoff points for waist circumference than do white Caucasians.