Associations of current BMI and nadir lifetime BMI with Int.vBMD and vertebral strength in AN. Among all women with low-weight AN and atypical AN combined, Int.vBMD and vertebral strength were positively associated with (A, B) current BMI and with (C, D) nadir lifetime BMI. Regression lines were log-transformed with respect to (A, C) Int.vBMD and with respect to (A, B) current BMI. ○, low-weight AN; ▲, atypical AN.