Missed Periods: Causes Beyond Pregnancy

Menstruation occurs when a fertilized egg doesn't implant, triggered by hormonal shifts. If implantation occurs, hCG prevents uterine shedding and pregnancy begins.

Causes of Missed/Delayed Periods

• Pregnancy: Most common cause; hCG maintains uterine lining.
• Hormonal imbalances: High estrogen/low progesterone from stress, thyroid disorders, PCOS.
• Birth control: Hormonal contraceptives suppress ovulation, altering bleeding patterns.
• Medical conditions: Uterine scarring, endometriosis, cancer.
• Eating disorders: Anorexia/bulimia cause hormonal disruption and malnutrition.
• Excessive exercise: Energy deficit disrupts hypothalamic-pituitary-ovarian axis.
• Perimenopause: Irregular cycles preceding menopause.

See a doctor for missed/irregular periods to rule out underlying conditions.