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What Causes Irregular Periods

The normal cycle of a woman’s period is 28 days and it is considered irregular when it exceeds 35 days or even if the periods come twice in a month.Periods occur when the lining of the uterus called endometrium is shed. A condition called oligomenorrhea occurs when there is irregularity of periods.

Puberty And Menopause

In a woman’s life, periods starts during puberty i.e 10 years to 16 years till her menopause at 45 to 50 years. Irregular periods can happen during the time of puberty as well as menopause and may also occur due to hormonal imbalance and the change in body function that may be caused through the usage of contraception. Puberty and menopause related irregular periods doesn’t necessarily need medical attention but if there is irregularity in periods during the reproductive years, medical consultation is advised.

A woman normally have 5 days of regular flow during menstruation but can also fluctuate between 2 and 7 days. Periods also doesn’t occur during pregnancy as well as in many cases during the lactation period. Otherwise, apart from the hormonal imbalance and contraceptives, the above mentioned condition requires little medical attention.

Lifestyle Related Causes

Irregular periods can also be caused because of the following reasons:

(a) weight fluctuation that include extreme weight loss and gain

(b) eating disorder such as anorexia as well as bulimia

(c) emotional stress

(d) endurance exercise such as marathon running

Health Complications

Irregular periods is also caused by health complications such as PCOS (Polycystic ovarian syndrome), thyroid disorder, cervical, uterine and womb cancer as well as endometriosis in which the cells found inside the uterus is grown outside of it as well as Pelvic inflammatory disease (PID) -an infection of female’s reproductive system.


Maintaining a proper weight and following a health regimen as well as eating right and reducing stress is said to aid in keeping the periods regular. And apart from irregular periods during puberty and menopause, medical attention is highly recommended.