Not sure, but believe a decade ago pre-diabetes was defined by a fasting glucose greater than 110. Agree that hemoglobin A1c did not enter into the definition.
Believe the earlier pre-DM designation was that people between 110-126 had greater than 50% more likelihood of developing DM than a population below 110.
DM researchers/educators/supporters/fanatics have often been overly aggressive in scaring people about the disease (although it is a major health challenge). I remember going to a national conference on DM education and the expert listed 11 categories of individuals that should be referred for DM education. I questioned her as the list was comprised of every living American (and strangely,that was not the point she was trying to make and she later sheepishly conceded that her list was all encompassing).
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