Missed periods are generally a sign of pregnancy, though, in some cases, they can be caused by stress, rapid weight loss or gain or a serious medical condition. Certain drugs can also disrupt a woman's menstrual cycle, and popular birth control methods containing the hormone progestin can suppress ovulation as well as menstrual periods in some women. If pregnancy or birth control side effects are not the cause of missed periods, seeking medical attention is advised.
Anorexia
Anorexia is an eating disorder that can affect men and women both young and old. It is described as a preoccupation with weight, food and the body. A host of ramifications can accompany the condition, including depression, mood swings, serious damage to the organs and heart, dehydration and malnutrition. Signs of anorexia include fear of weight gain, self-starvation and excessive dieting, compulsive exercising, extreme weight loss, sensitivity to cold, hair loss and absent or irregular periods, according to the National Association of Anorexia Nervosa and Associated Eating Disorders. The condition should be treated with the help of a medical professional.
Hormonal Imbalances/PCOS
Hormonal imbalances can cause fluctuations in a woman's period. When an alteration in the level of estrogen or progesterone occurs, a late menstrual cycle may result. Other reasons for a hormonal imbalance include diet changes, stress and polycystic ovarian syndrome (PCOS), a condition that researchers believe could be linked to insulin and may cause an excess of insulin in the body, leading to increased production of the hormone androgen. Too much androgen can be evident when excessive hair growth, acne, weight gain and ovulation problems occur. Approximately one in 10 women of childbearing age has PCOS, according to Women's Health.Gov. Girls as young as 11 years old may be inflicted. In addition, the condition is the most common cause of female infertility.
Thyroid and Other Conditions
Ailments such as a thyroid problem, pituitary tumor or even a chronic illness sometimes cause delays in the menstrual cycle, according to an article reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Other endocrine disorders like pituitary disease or tumors can disrupt the menstrual cycle, though regular periods are said to resume when the condition has been treated.
