no period in a female for more than 2 months the fenale is 21 years old...what is the reason

Hi Anon,

Do you have irregular periods? Are you sexually active? There are many reasons why a woman may have a skipped period, Including:

Dramatic weight loss, particularly from drastic diets, eating disorders including anorexia and bulimia , or excessive exercise
Dramatic weight gain or morbid obesity
Malnourishment
Birth defects including lack of a uterus, vagina, or other reproductive organs
Medical conditions including cystic fibrosis , Cushing's disease , polycystic ovary , or Prader-Willi syndrome
Psychological stress—can lead to a hormonal imbalance sufficient to cause amenorrhea.
Medications—some antidepressants, chemotherapeutics, corticosteroids, certain contraceptives.
Chromosomal abnormalities
Hermaphroditism (having both male and female reproductive organs)
Pituitary tumor
Thyroid dysfunction
Uterine scarring

If you are sexually active and have not had your period for 2 months, please take a pregnancy test to ensure you are not pregnant.

Good Luck!

Rosa