Table 1.

Inclusion and exclusion criteria.

Inclusion criteria	Exclusion criteria
Patients with drug resistant epilepsy or GLUT1-DS undergoing KD from at least 3 months before inclusion to the study	Patients who experienced secondary amenorrhea
Patients who had regular menarche at least 3 months before inclusion to the study	Patients who have irregular menstrual cycle
Absence of recognized endocrinologic problems/ disease	Pregnant patients