Hormone levels fluctuate throughout the 28-day menstrual cycle. These changes can affect a person’s appetite and may also lead to fluid retention. Both factors can lead to perceived or actual weight gain around the time of a period.
This article describes why a person may gain weight during a period, and how to prevent it. We also outline ways to help avoid weight gain during a period.
Medical research has identified around 150 symptoms that people may experience in the days leading up to a period. Food cravings, increased hunger, water retention, and swelling are premenstrual symptoms that may make a person feel like they are gaining weight.
People may notice changes in their appetite throughout their menstrual cycle. For some, these changes may lead to concerns over weight gain.
Changes in appetite tend to occur at distinct stages of the menstrual cycle called the follicular phase and the luteal phase.
- The follicular phase. This phase begins when a person bleeds and ends before they ovulate. Estrogen is the dominant hormone during this phase. Since estrogen suppresses appetite, a person may find that they eat less during this phase.
- The luteal phase. This phase begins after ovulation and lasts up to the first day of the next period. During the luteal phase, progesterone is the dominant hormone. Since progesterone stimulates appetite, a person may find that they eat more during this phase.
Not all studies show that food cravings result in an increased number of calories consumed and an increase in weight. However, people who do consume more calories as a result of their cravings may experience some weight gain.
Water retention and swelling
People may experience increased water and salt retention around the time of their period. This is due to an increase in the hormone progesterone. Progesterone activates the hormone aldosterone, which causes the kidneys to retain water and salt.
However, water retention does not always signify weight gain. A 2014 study investigated water retention in females who complained of swelling during their period.
Circumference measurements taken throughout the study indicated that the participants did have significant swelling in the following areas:
- upper and lower limbs
- pubic areas
However, there were no significant changes in weight throughout the participant’s cycles.
Many people experience both physical and psychological symptoms during a period. Symptoms may include:
- angry outbursts
- crying spells
- social withdrawal
- poor concentration
- taking more naps
- changes in sexual desire
- aches and pains
- skin problems
- gastrointestinal symptoms
- abdominal pain
People may feel additional symptoms in the days leading up to a period. Symptoms may include:
- thirst and appetite changes
- breast tenderness
- swelling of the hands or feet
The type, severity, and duration of symptoms will vary from person to person. Additionally, some people may experience a combination of symptoms, while others may not experience any at all.
Premenstrual symptoms tend to start a few days before bleeding, or menstruation, and stop once menstruation occurs.
- the person has a pattern of symptoms 5 days before their period for at least three cycles in a row
- the symptoms end within 4 days after their period starts
- the symptoms interfere with their normal activities
The following are some examples of how to prevent weight gain during a period.
The American College of Obstetricians and Gynecologists recommend the following eating habits to help lessen the effects of PMS:
- eating complex carbohydrates to reduce mood symptoms and food cravings
- eating calcium rich foods, including yogurt and leafy green vegetables
- reducing fat, salt, and sugar intake
- avoiding or limiting caffeine and alcoholic beverages
- keeping blood sugar levels stable by eating smaller meals more often
A doctor may also recommend taking a magnesium supplement. This can help to alleviate the following symptoms of PMS:
- breast tenderness
- mood disturbances
Sometimes, doctors may prescribe diuretics to people who complain of water retention during their period. Diuretics help to reduce the amount of water that the body stores.
Researchers have found that certain
Doctors often use combined oral contraceptives to treat the symptoms of premenstrual syndrome.
Hormonal fluctuations that occur throughout the menstrual cycle can affect a person’s appetite. In particular, people may experience food cravings in the days leading up to a period.
Females may also experience water retention and bloating, which can give the appearance of weight gain.
There are several steps people can take to prevent weight gain during a period. A person can practice healthful eating habits throughout their cycle. This includes eating less salt, sugar, and fat, and stocking up on low calorie snacks to satisfy food cravings. In addition, magnesium supplements may help to alleviate bloating and other symptoms of PMS.
People who are concerned about fluid retention should talk to their doctor. The doctor may prescribe diuretics or oral contraceptives to help alleviate this symptom.
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What is the average amount of weight gain during a period?
The symptoms that people experience during their menstrual cycle vary widely from one individual to the next. Symptoms can even differ between cycles, depending on a person’s nutrition, stress level, amount of exercise, intake of caffeine, sugar, and alcohol, and other lifestyle factors. Because everyone is so different, there’s not really an “average” weight gain during the menstrual cycle. While many people don’t notice any bloating or weight gain at all, others might gain as much as 5 pounds. Usually, this gain happens during the premenstrual, or luteal phase, and the person loses the weight again once the next period begins.
Meredith Wallis, M.S., CNM, ANP Answers represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.