What are the reasons & Treatments for sudden Unintentional Weight Gain in females? 

Jan 25, 2023 by Adhip

Sudden and unintentional weight gain in females can occur when they consume the same quantity of food and liquid but do not exercise enough. This situation is usually caused by fluid retention, constipation, abnormal growth, or pregnancy. It takes place when you are not intentionally trying to put on weight.

Unplanned weight gain can take place over time, suddenly, or quickly.

Sudden and Unintentional weight gain in female can be a regular occurrence due to different factors, such as the menstrual cycle in women or pregnancy. For example, during nine months of pregnancy, one may experience longer-term unintentional weight gain.

Unexpected weight gain can indicate a variety of issues, including medication side effects and medical emergencies. While in many cases weight gain won’t cause any harm, it is important to be aware of any other accompanying symptoms that could be a sign of a more serious issue.

What causes sudden and unintentional weight gain in females?


Pregnancy is often the culprit behind unintentional weight gain. However, many mothers-to-be choose to consume more calories to provide nourishment for the growing baby in their womb. As a result of this, it is quite common for expectant women to put on some extra pounds during pregnancy.

female sudden weight gain Pregnancy

Along with the baby, in females, the sudden weight gain includes the placenta, amniotic fluid, extra blood supply, and a growing uterus.

Hormonal changes

Women usually experience menopause in their mid-forties to mid-fifties, when estrogen – a hormone that controls menstruation and ovulation – decreases significantly. When estrogen levels reach a certain point, it ceases to cause menstruation and marks the start of menopause.

Estrogen fluctuation during menopause can cause weight gain around the abdomen and hips. Additionally, women with PCOS often have issues of unwanted weight gain.

During your middle years, hormones begin to change and it can result in a slower metabolism which often leads to an increase in weight.

Weight gain can be caused by other medical issues that affect hormone levels in both men and women. These issues may include:

  • hypothyroidism
  • Cushing’s Syndrome is characterized by increased levels of cortisol, a stress hormone.
  • A spike in the production of aldosterone can be observed.


It is common for women to experience occasional weight gain during their menstrual cycle. This is because of an imbalance in the two hormones – estrogen and progesterone – that can lead to water retention, bloating, and a couple of extra pounds.

Weight gain during a menstrual cycle is usually temporary, disappearing when the period ends. It may come back when the next cycle begins, and may also occur at ovulation.

Fluid retention

Sudden, unexplained weight gain can be an indication of fluid retention. This in turn causes edema – a condition where body parts like limbs, hands, feet, face, and abdomen appear swollen.

Individuals with cardiac insufficiency, renal impairment, or those taking specific drugs might encounter weight gain as a side effect.

It is essential to bring any sudden or considerable gain in weight and fluid retention to the attention of a healthcare professional, even if there are no other symptoms.


Certain medications can hurt one’s weight, leading to unintentional weight gain. Such medications include:

Symptoms of Sudden and unintentional weight gain in females?

Symptoms of unintentional weight gain vary from individual to individual, depending on the cause. These may include abdominal discomfort or pain, as well as bloating.

Abdominal swelling is not the only indicator of a problem; puffiness & discomfort may also be visible in other parts of the body like hands, arms, legs, and feet.

Seek medical help right away if you’re experiencing any of the following symptoms:

  • fever
  • skin sensitivity
  • shortness of breath
  • difficulty breathing
  • heart palpitations
  • sweating
  • changes in vision
  • rapid weight gain

Abnormal weight gain can be alarming and is usually accompanied by other signs and symptoms. If such symptoms appear, it could be a sign of a more serious underlying condition.

Unintentional weight gain in female diagnosis

Your doctor will ask several questions about your lifestyle and medical history, as well as check for certain hormones, kidney/liver functions, and any other health markers that could indicate a potential issue. They also may take a blood sample to diagnose any issues.

Certain imaging tests may be recommended, such as an ultrasound, plain film X-ray, MRI, or CT scan.

Treatment options for Sudden and unintentional weight gain in females?

Unintentional weight gain can be treated in various ways, but the right solution may vary depending on the reason behind it. Therefore, determining the cause is critical to successfully managing and preventing any further gain.

If a disturbance in the hormones is to blame, your physician may suggest medication to manage your hormone levels. The treatment will depend on which ones are unbalanced. These treatments tend to be taken over an extended period.

Your doctor can recommend alternative treatments if the medication you take is causing any issues. This will help ensure that you receive proper care and get the most out of your medication.


Before taking any drastic action, it’s essential to assess your lifestyle. If you’re not eating healthily, it’s common to gain from half a pound up to a pound per week. Additionally, your menstrual cycle can cause the scale to swing anywhere from four to five pounds depending on where you are in the cycle.

A doctor can help identify underlying causes of weight gain and develop a plan to help you reach and maintain a healthy weight.

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