Original: A German study has shown that 1–2% of the population meet all the diagnostic criteria of BDD,  with a larger percentage showing milder symptoms of the disorder (Psychological Medicine, vol 36, p 877).
Simplified: Numbers of people A German study has shown that 1-2% of the population has complete BDD, but a bigger percentage of people show some of the effects (Psychological Medicine, vol 36, p 877).