Waist circumference (WC) is an easy and reliable measure of visceral adipose tissue and a simple index of cardiovascular risk. The World Health Organization (WHO) reported sex specific WC cut off values for the Caucasian people, named as action levels 1 and 2, to define the overweight or obese people. These cut off values, originally established in a Dutch population, were later adopted by several medical organizations in order to define Metabolic Syndrome. However, these cut off levels may not necessarily represent the characteristics of the other populations. Therefore it is recommended that the sex specific WC cut off points should be established for different ethnic groups.