Natural Health Research

Naturopathic Medicine
Health Quizzes



Amenorrhea is defined as the absence of menses. Primary amenorrhea occurs when menarche has not occurred by age seventeen. Secondary amenorrhea is the cessation of menses for three cycles in a non-pregnant woman.


Causes of primary amenorrhea include: Imperforate hymen; Agenesis of the uterus and upper 2/3 of the vagina; Turner's syndrome; Constitutional delay; Secondary amenorrhea; Physiological - pregnancy, corpus luteal cyst, breast-feeding, menopause; Suppression of the hypothalamic-pituitary axis - post pill amenorrhea, stress, intercurrent illness, weight loss, low body mass index; Pituitary disease - ablation of the pituitary gland, Sheehan's syndrome, prolactinoma; Uncontrolled endocrinopathies - diabetes, hypo- or hyperthyroidism; Polycystic ovarian disease (POD), (Stein-Leventhal syndrome); Chemotherapy; Pelvic irradiation; Endometrial ablation (Asherman's syndrome); Drug therapy - systemic steroids, danazol, GRH-RH analogs; and Premature ovarian failure.

Risk factors for amenorrhea include: Over-training (e.g., long-distance runner, ballet dancer); Eating disorders; and Psycho-social crisis.




Fantastic new books!

CAM Therapies has studies on natural therapies for over 100 diseases.

CAM Labs lists lab tests for 100 diseases.

Nutritional Genetics is a fantastic resource.



Information on this site is provided for informational purposes only and is not meant to substitute for the advice provided by your own physician or other medical professional. You should not use the information contained herein for diagnosing or treating a health problem or disease, or prescribing any medication. If you have or suspect that you have a medical problem, promptly contact your health care provider. Information and statements on this site have not been evaluated by the Food and Drug Administration.