I guess we will have to agree to disagree on the BMI charts. The online ones are the same ones used by doctors. They are a guide. I do not take them as 100% absolute but if there wasn't any truth to them what so ever, they wouldn't use them. If my child fell into the at risk category for either under or overweight, I would not panic but I would certainly take that as a warning to keep an eye on things. Apparently that makes me odd. Wouldn't be the first time!

Some of you feel the doctor trumps the charts. I personally feel they go hand in hand and my opinion on that won't change.
Most doctors spend just a few minutes with their patients. Assuming your child is healthy, they are only seeing the doctor maybe once a year for a check up and once for an illness. In a five minute visit twice a year, it is impossible for a doctor to really know what that kids lifestyle is like. Unless you are spending countless hours with your doctor, the fact of the matter is, they do not know your child. I couldn't discount the BMI charts entirely after having only spent 10 minutes of our past year with our pediatrician.