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Causes for Irregular Menstrual Cycle

Causes for Irregular Menstrual Cycle

Causes for irregular menstrual cycle conditions, often develop from PCOS, or polycystic ovary syndrome. About ten percent of women are affected by PCOS. However, as much as thirty percent of women in their reproductive years, have 1 or 2 irregular periods every 6 months, that are unrelated to a serious illness or condition.

How Do Women Know If They Have PCOS?

PCOS can be discovered through measuring the hormones from a single or multiple blood tests. Often, an ultrasound scan of the ovaries is recommended. Without proper treatment, PCOS can severely impact a women’s health by developing into heart disease, ovarian cancer or endometriosis.

What Does PCOS Do?

PCOS interferes with normal ovulation by creating a huge amount of tiny cysts on the ovaries. They are 1 centimeter or smaller in size. Symptoms include: high blood pressure, gaining weight, extra hair growth, dandruff, acne and infertility. It’s vital to get examined if any of these conditions develop, or a woman is having problems becoming pregnant.

Can Irregularities Be Normal?

Irregular menstrual cycles, known as Oligomenorrhea, can be a normal part of menstruation. A light flow or a missed period, might be a normal consequence of not making eggs every month, when women start and end their menstruation. Women normally start their menstruation cycle during the ages of 11 to 13 years old. When women reach their middle 40s, they begin perimenopause, when menstruation is ending as estrogen and progesterone hormone levels change. Irregular periods can last through the first year of menopause, which starts around 50 years old.

What Are Other Causes For Irregular Menstrual Cycles?

When the body’s hormone signals become out of sync, it typically causes an irregular menstrual cycle. A period comes from the female body producing hormones, such as estrogen and progesterone. The ovaries, hypothalamus and pituitary gland maintain the hormones. When the body wants to start the ovulation and menstruation cycle, these body parts pass signals to each other. If any one of the signals become crossed, an irregular period occurs.

Why Do Hormones Get Out Of Sync?

Besides when a woman starts and ends menstruation, hormones can become out of sync from:

High stress – Extreme anxiety or exhaustion.
Becoming pregnant – Body creating new hormone levels.
Poor diet – Severe loss or gain in weight.
Over exercising – Intensive workouts or sports training.
Birth Control Pills – Body adapting to controlled hormone levels.



“Menstruation: Irregular Periods.” Epigee Pregnancy Resource. N.p., n.d. Web. 25 Aug. 2010.

“Missed or Irregular Periods – WebMD.” Women’s Health Center: Information on Women’s Wellness, Nutrition, Fitness, Intimate Questions, and Weight Loss. N.p., n.d. Web. 25 Aug. 2010.

“Perimenopause.” WebMD – Better information. Better health.. N.p., n.d. Web. 25 Aug. 2010.


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