Many studies are now indicating that waist size can be a better indicator of health than weight and BMI- body mass index. Here’s what Dr Oz recommends:
“Your waist size should be half your height. For an average size female, that’s less than 35 inches; less than 40 inches for a male. Those numbers are obesity thresholds. Ideally, I’d like you less than 32 and a half inches if you’re a woman and less than 35 inches if you’re a male.”
Here’s how to measure your waist from eHow.com:
1 Find your natural waist. An easy way to do this is to stand in front of the mirror and bend at your side. The crease that forms indicates your natural waistline, directly above the belly button and below the ribcage.
2 Stand up straight and relax your abdominal muscles. Wrap the measuring tape completely around your waist starting at the belly button. Begin at the spot on the tape where the measure reads “0.” Make sure the tape is level around your waistline–not too loose, not too tight.
3 Do not place the measuring tape over clothes. You’ll get the most accurate results on bare skin. However, make sure the tape is not squeezing into your skin. The number that meets the “0″ after you have circled your entire waist is your waist measurement.
Read more: How to Measure a Waist | eHow.com http://www.ehow.com/how_2307504_measure-waist.html#ixzz1vOxcPR72