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<blockquote data-quote="phoenix" data-source="post: 191454" data-attributes="member: 12578"><p>When you are comparing numbers of people then BMI corelates reasonably well with body fat. If you search pubmed there were a lot of studies in the1970s and 80s comparing different indexes , and measurements.BMI was found to be be a useful tool. The level at which overweight /obesity is defined does vary according to ethnicity. Obviously there are going to be people who are outliers like the rugby player or at the other extreme someone with sarcopenia who can have very low BMI but because of a lack of muscle not fat .. but most of us aren't at either extreme.</p><p>At an individual level, I think its pretty obvious if you have too much fat. One doctor I know suggests that just a quick 'jiggle' up and down if front of a mirror should be enough to tell you My doctor uses one of those body fat scales, I don't know if its any more accurate than the ones for home use. </p><p>There's also a formula to calculate body fat called the YMCA formula. They claim it's reasonably accurate for fat percentage ( lots of calculators on the if you google), I haven't checked the evidence. I like the results this gives me... but truthfully, I think it probably underestimates my fat (certainly less than on the impedance scale )</p></blockquote><p></p>
[QUOTE="phoenix, post: 191454, member: 12578"] When you are comparing numbers of people then BMI corelates reasonably well with body fat. If you search pubmed there were a lot of studies in the1970s and 80s comparing different indexes , and measurements.BMI was found to be be a useful tool. The level at which overweight /obesity is defined does vary according to ethnicity. Obviously there are going to be people who are outliers like the rugby player or at the other extreme someone with sarcopenia who can have very low BMI but because of a lack of muscle not fat .. but most of us aren't at either extreme. At an individual level, I think its pretty obvious if you have too much fat. One doctor I know suggests that just a quick 'jiggle' up and down if front of a mirror should be enough to tell you My doctor uses one of those body fat scales, I don't know if its any more accurate than the ones for home use. There's also a formula to calculate body fat called the YMCA formula. They claim it's reasonably accurate for fat percentage ( lots of calculators on the if you google), I haven't checked the evidence. I like the results this gives me... but truthfully, I think it probably underestimates my fat (certainly less than on the impedance scale ) [/QUOTE]
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