I just read that the FDA gives a 20% leeway in accuracy with nutritional information on packaging. Is this true? Am I the only one who didn't know this? That seems like a LOT! Hopefully the "overages" average out with the "underages".
The RDI allowances are generalizations anyway. The range of what particular bodies need is pretty wide, so I wouldn't worry too much about it.
The FDA doesn't develop their own data anyway. They accept whatever the manufacturer submits in most cases. The Center for Science in the Public Interest (CSPI) has a some de-bunking data available on the labels they've tested themselves.