Age at menarche, eating disorders, and their relationships with some parameters in female adolescents in Iran.

In the study population, mean ± standard deviation (SD) of AM was 12.95 ± 1.14 years. Inverse significant relationships were found between weight and AM, also BMI and AM (p < 0.05). There was a negative association between weight and anorexia nervosa (AN), BMI and AN, also WC and AN (p < 0.001). A significant positive correlation was found between SES and AM, also EDs and AM (p < 0.05) then between weight and bulimia nervosa (BN) & binge-eating disorder (BED), BMI and BN & BED, also WC and BD & BED (p < 0.001). Our results also revealed that AM in mothers had a significant positive relationship with AM in their daughters (p < 0.001, r = 0.34).