Several: Pregnancy, stress, delayed ovulation, ovarian cysts, no ovulation, and thyroid disease to name a few of many reasons.
Answered 2/15/2014
5.8k views
Agree w Dr. Ingram: Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, hormone irregularities, drug use, meds (i.e., birth control) or medical problems (i.e. Pcos). #1 reason is pregnancy.
Answered 9/28/2016
4.5k views
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