Preliminary research has suggested that certain populations may have a higher prevalence of orthorexia nervosa. These populations include people who practice yoga or go to the gym, dietitians, medical students, and athletes. However, given that most orthorexia measurement tools used in this research did not differentiate between orthorexia nervosa and healthy orthorexia, it is possible that these higher prevalence rates are due to the tendency of these populations to be more health conscious. Further, some research in the general population has reported rates of orthorexia nervosa of up to 88%, which again calls into question the validity of orthorexia measurement tools. Further research with more specific measurement tools and larger sample sizes is needed to confirm these findings.[1][2] [3][4][5]