Yes: Either mental or physical stress can affect the menstrual cycle.
Answered 5/31/2015
4.9k views
Yes: 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
2.8k views
Unknown : The reason is unknown, but the hormone cycle that happens is sensitive, and can easily be thrown off. Stress hormones influence the release of the hormones from the brain that control the cycle, but why and how it happens is not known.
Answered 5/31/2015
3.5k views
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