Correlation between Heavy Periods and Weight Gain

By  ,  Onlymyhealth editorial team
Jun 06, 2012

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Quick Bites

  • Weight gain during menstruation is caused because of water retention.
  • Slight fluctuations in hormone levels can lead to an excess of one hormone.
  • Excess of estrogen leads to weight gain in the woman.
  • Women with severe symptoms must seek the help of a physician.

Although, according to nature’s rule, every woman during childbearing years should menstruate, each woman has a unique cycle. While some women effortlessly complete each menstrual cycle, other women have to painfully bear problems related to premenstrual syndrome, weight gain and heavy bleeding that put a negative light on their life. Here is how weight gain is correlated to heavy periods.



A lot of women experience heavy bleeding when they are on their menstrual period. This condition is medically termed menorrhagia. The University of Rochester defines this medical condition as a situation by virtue of which a woman bleeds enough to soak a tampon or sanitary napkin that needs an hourly change. Menorrhagia also comprises menstrual bleeding that lasts for more than seven days or bleeding that occurs between periods.


Weight Gain

Weight gain can be linked to menstrual period, especially a few days before the onset of menstrual bleeding. This weight gain usually occurs due to water retention and can give rise to a feeling of bloating or a sensation of fullness in the abdomen. Water retention refers to the retention of fluids in the body’s tissues that do not get passes out of the body through urination. Weight gain and bloating may be an outcome of air in the gastrointestinal tract, thereby causing distention and excess gas.

Weight Gain


Because hormones are needed to continue menstruation, slight fluctuations in the level of hormones or conditions can lead to an excess of one hormone without the balance of another, which can, thereby lead to symptoms related to weight gain and heavy menstrual bleeding. Estrogen is a hormone that is balanced by progesterone and an imbalance of hormones in the body can cause symptoms, which usually take the form of heavy bleeding and weight gain.

Since the estrogen hormone is used to build up the lining around the uterine before menstruation, an excess of estrogen in the body can contribute to development of blood in the uterus and more tissues. If the egg does not get fertilised, a menstrual period with heavy bleeding may occur and last for more days than usual.



Heavy bleeding during menstruation along with weight gain must be given the attention of a physician to bring out a definitive cause of the same. Women, who experience severe symptoms that are caused by an imbalance of hormones, may be prescribed hormone replacement to offset the increase in estrogen levels.


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