Follow-up simple slope analyses for the migraine group revealed that for migraineurs with anxiety ghrelin had a positive association with BMI (B = .02, t = 1.83, p = .07), whereas for migraineurs without anxiety the association between ghrelin and BMI was negative (B = -.02, t = -1.86, p = .07). This evidence concerns the gene GHRL and migraine disorder.