6 year old statistics can be topped by more current research and this information proves the point about what BMI is intended for...  A population group,  not individuals.  

Does obesity lead to health problems? Yes,  we know that.  Is it that cut and dry? No,  it's not.  More and more research is showing someone can carry "above optimal" weight or have a "high" BMI and still be a fit,  healthy person.  I consider myself an example of that.  I used to carry an additional 110lb from what I do now.  I've kept it off for about 10 years.  My BMI is "overweight",  almost "obese".  My body fat percent is 22%.  For females 25-29% is considered medically acceptable while 21-24% is considered fitness level.  If I let the scale and BMI determine my fitness or health or predict my future that would be silly! It's much more complex than that. 

Your goals may be to help or educate others.  Your technique and delivery need work if you want your audience to receive what you have to say.