If BMI was discredited years ago - why are people still using it?
To all of those posters criticizing the article for pointing out what the original paper said...
Yes, BMI is crap, but it is still used by health authorities the world over. Consider the latest NICE recommendations about using BMI to determine treatment options - a simple way to ration health-care, but which does nothing except entrench the pressure on people to conform to an ideal body image.
If having a BMI greater than 25 did actually cause any health impacts, why does the 25-30 group have the highest life expectancy in the US? Followed by 30-35, which is statistically the same as the "normal" 20-25 group. These are US-CDC figures from actual data, not extrapolations from extreme cases (which is where all of the obesity-related health predictions come from).
BMI was even re-classified in 1999 to make "normal" 20-25 instead of 22-27 and so on up the scale. At a stroke, this increased the percentage of overweight and obese people in the population and I have yet to find any discussion of re-calculating obesity rates in the historical data - itis simply give an evidence the "obesity epidemic". Furthermore, average heights are still increasing, even in western populations, and the BMI calculation cannot hold up for the extra bone mass needed to support taller people.
Papers like the one referred to here deserve a wide reading - and if a great headline such as provided by El Reg helps, good on yer!