PCOS Hormonal Imbalance: How to Restore Hormone Balance Naturally

PCOS (Polycystic Ovary Syndrome) is one of the most common hormonal imbalance disorders affecting women of reproductive age.

While it is often associated with elevated androgen (male hormone) levels, PCOS also disrupts the balance of two essential female hormones: estrogen and progesterone.

These hormones play a crucial role in regulating the menstrual cycle, ovulation, fertility, bone health, and the overall functioning of the reproductive system.

In women with PCOS, hormonal imbalance interfere with normal ovulation, causing irregular menstrual cycles and reduced progesterone production.

At the same time, estrogen levels may remain relatively high or fluctuate abnormally because ovulation does not occur regularly.

This imbalance between estrogen and progesterone can contribute to symptoms such as irregular periods, abnormal uterine bleeding, difficulty conceiving, mood changes, and an increased risk of endometrial hyperplasia over time.

Understanding how PCOS affects estrogen and progesterone helps women recognize the underlying causes of their symptoms and highlights the importance of early diagnosis, lifestyle changes, and appropriate medical management.

What Are Estrogen and Progesterone?

Estrogen and progesterone are two of the primary female reproductive hormones produced mainly by the ovaries.

They work together to regulate the menstrual cycle, prepare the uterus for pregnancy, and support many other functions throughout the body.

Estrogen

Estrogen is a group of hormones that includes estradiol, estrone, and estriol, with estradiol being the most active form during the reproductive years.

Estrogen helps:

• Regulate the menstrual cycle
• Stimulate the growth of the uterine lining (endometrium)
• Support egg maturation within the ovaries
• Maintain healthy bones
• Protect cardiovascular health
• Support skin elasticity
• Maintain vaginal health
• Influence mood and cognitive function

Estrogen levels naturally rise during the first half of the menstrual cycle to prepare the body for ovulation.

Progesterone

Progesterone is produced mainly by the corpus luteum, a temporary gland that forms in the ovary after ovulation.

Its primary functions include:

• Preparing the uterus for implantation of a fertilized egg
• Supporting early pregnancy
• Regulating the menstrual cycle
• Stabilizing the uterine lining
• Balancing the effects of estrogen
• Helping maintain normal body temperature after ovulation

If pregnancy does not occur, progesterone levels decline, triggering menstruation and starting a new menstrual cycle.

What Are Their Normal Roles in the Menstrual Cycle?

A healthy menstrual cycle depends on the coordinated actions of estrogen and progesterone.

Follicular Phase

During the first half of the menstrual cycle, estrogen levels gradually increase as ovarian follicles mature.

Higher estrogen levels:

• Stimulate the growth of the uterine lining
• Help mature the dominant ovarian follicle
• Prepare the body for ovulation

Once estrogen reaches a certain level, it triggers a surge in luteinizing hormone (LH), leading to ovulation.

Ovulation

Ovulation occurs when a mature egg is released from the ovary.

After ovulation, the ruptured follicle transforms into the corpus luteum, which begins producing progesterone.

Luteal Phase

During the second half of the menstrual cycle, progesterone becomes the dominant hormone.

Progesterone:

• Thickens and stabilizes the uterine lining
• Prepares the uterus for implantation
• Prevents excessive growth of the endometrium
• Works alongside estrogen to maintain reproductive health

If pregnancy does not occur, progesterone levels fall, causing the uterine lining to shed during menstruation.

How Does PCOS Affect Estrogen Levels?

Unlike testosterone, estrogen levels in women with PCOS are not always low or excessively high.

Instead, estrogen often remains within the normal range but is produced in an abnormal pattern because ovulation occurs infrequently or not at all.

When ovulation fails to occur regularly:

• The normal menstrual cycle is disrupted.
• Progesterone production decreases significantly.
• Estrogen continues to stimulate the uterine lining without the balancing effects of progesterone.
• Hormonal signals between the brain and ovaries become dysregulated.

Additionally, many women with PCOS have increased body fat, which converts androgens into a weaker form of estrogen (estrone).

This can contribute to continuous estrogen exposure, even when ovulation is absent.

As a result, women with PCOS may experience:

• Irregular menstrual cycles
• Spotting between periods
• Heavy or prolonged periods
• Endometrial thickening over time
• Increased risk of endometrial hyperplasia if left untreated

Although estrogen itself is not usually excessively elevated, the absence of normal progesterone creates a condition sometimes referred to as unopposed estrogen, where estrogen’s effects on the uterine lining are not adequately balanced. (Azziz et al. 2016)

How Does PCOS Affect Progesterone Levels?

Progesterone production depends on ovulation.

Since many women with PCOS ovulate infrequently or not at all (anovulation), progesterone levels often remain lower than expected.

Without regular ovulation:

• The corpus luteum does not form.
• Progesterone production is reduced.
• The uterine lining continues to grow under the influence of estrogen.
• Menstrual cycles become irregular or absent.

Low progesterone contributes to several common symptoms of PCOS, including:

• Missed periods
• Irregular menstrual cycles
• Difficulty becoming pregnant
• Abnormal uterine bleeding
• Increased risk of endometrial hyperplasia
• Reduced menstrual predictability

Persistent progesterone deficiency is one of the major reasons why women with PCOS may require medical treatment to regulate menstrual cycles and protect the uterine lining.

Why Hormonal Imbalance Occurs in PCOS

The hormonal imbalance seen in PCOS results from complex interactions involving the ovaries, brain, insulin, and reproductive hormones.

Several factors contribute to altered estrogen and progesterone levels:

Irregular Ovulation

Because ovulation occurs infrequently, progesterone production remains consistently low.

Elevated Luteinizing Hormone (LH)

Many women with PCOS have increased LH levels, which stimulate the ovaries to produce more androgens.

These hormonal changes interfere with normal follicle development and ovulation.

Insulin Resistance

Insulin resistance affects approximately 50–70% of women with PCOS and contributes to hormonal imbalance by increasing androgen production and disrupting normal ovarian function.

Higher insulin levels also interfere with healthy follicle maturation, making ovulation less likely.

Increased Androgen Production

Excess androgen production disrupts the normal development of ovarian follicles.

Instead of releasing a mature egg, many follicles stop developing prematurely, preventing ovulation and reducing progesterone production.

Changes in Body Fat

Adipose (fat) tissue converts some androgens into estrone, a weaker form of estrogen.

This additional estrogen may further disturb the hormonal balance and contribute to prolonged stimulation of the uterine lining. (Legro et al. 2013)

Symptoms of Estrogen and Progesterone Imbalance

Hormonal imbalance involving estrogen and progesterone contributes to many reproductive symptoms experienced by women with PCOS.

Common symptoms include:

Irregular or Missed Periods

One of the hallmark features of PCOS is irregular menstruation due to infrequent ovulation and low progesterone production.

Heavy or Unpredictable Bleeding

When the uterine lining builds up over several months before shedding, menstrual bleeding may become unusually heavy or prolonged.

Breast Tenderness

Fluctuating estrogen levels may contribute to breast discomfort or tenderness in some women.

Mood Changes

Changes in estrogen and progesterone levels can influence neurotransmitters involved in mood regulation, contributing to irritability, anxiety, or mood swings.

Bloating

Hormonal fluctuations may lead to fluid retention and abdominal bloating, particularly around irregular menstrual cycles. (Teede et al. 2023)

How Does Estrogen and Progesterone Imbalance Affect Ovulation?

Ovulation is a carefully regulated process that depends on the coordinated action of estrogen, progesterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH).

In women with PCOS, this hormonal coordination is disrupted, making ovulation irregular or absent.

Normally, estrogen rises during the first half of the menstrual cycle and stimulates the maturation of a dominant ovarian follicle.

Once estrogen reaches a certain level, it triggers an LH surge, leading to the release of a mature egg.

In PCOS, however, several hormonal abnormalities interfere with this process:

• Ovarian follicles stop developing before reaching maturity.
• The dominant follicle fails to develop.
• Ovulation does not occur regularly (anovulation).
• Progesterone production remains low because the corpus luteum does not form.
• Menstrual cycles become irregular or absent.

Without regular ovulation, the menstrual cycle cannot proceed normally, resulting in prolonged estrogen exposure without adequate progesterone to balance its effects.

Can Estrogen and Progesterone Imbalance Affect Fertility?

Yes.

Hormonal imbalance involving estrogen and progesterone is one of the leading reasons women with PCOS experience fertility challenges.

Pregnancy requires:

• Normal follicle development
• Regular ovulation
• Healthy egg release
• Adequate progesterone production
• A receptive uterine lining

In women with PCOS:

• Ovulation may occur infrequently.
• Eggs may not mature properly.
• Progesterone levels remain low after an anovulatory cycle.
• The uterine lining may not be optimally prepared for implantation.

As a result, conception may take longer than expected.

The good news is that many women with PCOS can successfully conceive with lifestyle modifications, ovulation-inducing medications, or assisted reproductive treatments when needed. (Teede et al. 2023)

Long-Term Health Risks of Hormonal Imbalance In PCOS

Persistent estrogen and progesterone imbalance does not only affect menstrual cycles and fertility.

Over time, it may also increase the risk of certain health complications, particularly if menstrual periods remain absent for prolonged periods.

Endometrial Hyperplasia

When progesterone levels remain consistently low, estrogen continues stimulating the growth of the uterine lining (endometrium).

Without regular shedding during menstruation, the lining may become excessively thick, a condition known as endometrial hyperplasia.

Symptoms may include:

• Heavy menstrual bleeding
• Prolonged bleeding
• Irregular bleeding
• Bleeding after long gaps between periods

Women with prolonged absence of menstruation should seek medical evaluation to reduce the risk of complications.

Increased Risk of Endometrial Cancer

Long-term exposure to unopposed estrogen may increase the risk of developing endometrial cancer.

Although the overall risk remains relatively low in younger women, maintaining regular menstrual cycles or receiving appropriate treatment to protect the uterine lining is an important aspect of PCOS management.

Early diagnosis and treatment significantly reduce this risk.

Effects on Bone Health

Estrogen helps maintain bone density throughout adulthood.

Although most women with PCOS maintain normal estrogen levels, prolonged hormonal disturbances, menstrual irregularities, or prolonged amenorrhea may negatively affect bone health in some individuals.

Maintaining regular physical activity, adequate calcium intake, sufficient vitamin D, and appropriate medical care supports long-term bone strength. (Legro et al. 2013)

How Are Estrogen and Progesterone Levels Evaluated?

Diagnosing hormonal imbalance in women with PCOS involves combining clinical evaluation with laboratory investigations.

Since hormone levels naturally fluctuate during the menstrual cycle, healthcare providers interpret results alongside menstrual history and symptoms.

Medical History

The healthcare provider may ask about:

• Menstrual cycle length
• Missed or irregular periods
• Heavy menstrual bleeding
• Fertility concerns
• Previous pregnancies
• Weight changes
• Acne or excess hair growth
• Family history of hormonal disorders
• Current medications

A thorough history provides valuable clues about ovulation and hormone function.

Physical Examination

A physical examination may include assessment of:

• Body Mass Index (BMI)
• Blood pressure
• Signs of excess androgen levels
• Acne
• Excess facial or body hair
• Hair thinning
• Thyroid enlargement
• Waist circumference

The examination also helps rule out other endocrine conditions that may mimic PCOS.

Blood Tests

Hormone testing helps evaluate ovarian function and exclude other hormonal disorders.

Common laboratory tests include:

• Estradiol (Estrogen)
• Progesterone (usually measured after ovulation)
• Luteinizing Hormone (LH)
• Follicle-Stimulating Hormone (FSH)
• Total Testosterone
• Free Testosterone
• Dehydroepiandrosterone Sulfate (DHEAS)
• Prolactin
• Thyroid-Stimulating Hormone (TSH)

Additional metabolic tests may include:

• Blood glucose
• HbA1c
• Lipid profile
• Fasting insulin (when appropriate)

Because hormone levels vary throughout the menstrual cycle, healthcare providers determine the most appropriate timing for testing based on individual circumstances.

Pelvic Ultrasound

Pelvic ultrasound is commonly used to evaluate the ovaries and uterus.

Ultrasound may reveal:

• Multiple small ovarian follicles
• Enlarged ovaries
• Increased ovarian volume
• Endometrial thickness

Ultrasound findings are interpreted together with symptoms and hormone tests because not every woman with PCOS has polycystic-appearing ovaries.

Role of Physiotherapy in Supporting Hormonal Health

Although physiotherapy does not directly change estrogen or progesterone levels, it plays an important role in improving many factors that influence hormonal balance in women with PCOS.

Promoting Regular Physical Activity

Exercise improves insulin sensitivity, which helps reduce one of the major drivers of hormonal imbalance in PCOS.

A physiotherapist can develop individualized exercise programs that are safe, progressive, and sustainable.

Supporting Healthy Weight Management

Maintaining a healthy body weight improves ovarian function and may increase the likelihood of regular ovulation.

Even a modest reduction in body weight may improve menstrual regularity in overweight women with PCOS.

Improving Pelvic Health

Some women with PCOS experience pelvic discomfort, reduced physical activity, or poor core stability.

Physiotherapists can prescribe exercises that strengthen the pelvic floor, improve posture, and enhance overall functional movement.

Enhancing Mental Well-being

Hormonal fluctuations, infertility concerns, and chronic symptoms can contribute to anxiety, depression, and reduced quality of life.

Regular physical activity has been shown to:

• Improve mood
• Reduce stress
• Enhance sleep quality
• Increase energy levels
• Improve self-confidence

These benefits indirectly support better hormonal regulation and long-term health.

Reducing Cardiometabolic Risk

Women with PCOS have a higher risk of insulin resistance, obesity, hypertension, and cardiovascular disease.

Physiotherapists recommend aerobic exercise, resistance training, flexibility exercises, and activity modification to improve:

• Blood glucose control
• Cardiovascular fitness
• Muscle strength
• Metabolic health
• Long-term disease prevention

(Szafarowska et al. 2024)

How Is Estrogen and Progesterone Imbalance Managed in PCOS?

Managing estrogen and progesterone imbalance in women with PCOS focuses on restoring regular ovulation where possible, protecting the uterine lining, improving metabolic health, and reducing long-term complications.

Treatment is individualized based on age, symptoms, pregnancy plans, and overall health.

A comprehensive management plan may include:

• Lifestyle modifications
• Weight management
• Regular physical activity
• Medications to regulate menstrual cycles
• Ovulation-inducing treatments for women planning pregnancy
• Regular monitoring of menstrual health
• Management of insulin resistance and associated metabolic conditions

Women should work closely with their healthcare provider to develop a treatment plan tailored to their specific needs.

Lifestyle Changes That Support Hormonal Balance

Healthy lifestyle habits play an essential role in improving hormonal function and reducing many symptoms associated with PCOS.

Maintain a Healthy Body Weight

Excess body fat contributes to insulin resistance and can alter estrogen metabolism.

Achieving and maintaining a healthy weight may help:

• Improve ovulation
• Restore more regular menstrual cycles
• Improve fertility
• Reduce insulin resistance
• Lower inflammation
• Improve overall hormonal balance

Even a 5-10% reduction in body weight can lead to significant improvements in reproductive and metabolic health for many women with PCOS.

Follow a Balanced Diet

A nutrient-rich diet supports hormone production and metabolic health.

Include:

• Fresh fruits
• Vegetables
• Whole grains
• Lean proteins
• Fish
• Legumes
• Nuts
• Seeds
• Healthy fats

Limiting sugary beverages, refined carbohydrates, and highly processed foods may help improve insulin sensitivity and support healthier hormone regulation.

Exercise Regularly

Regular exercise improves insulin sensitivity and supports normal ovarian function.

Aim for at least:

• 150 minutes of moderate-intensity aerobic activity each week
• Muscle-strengthening exercises at least twice weekly

Consistent physical activity also improves mood, cardiovascular health, and long-term metabolic outcomes.

Manage Stress

Chronic stress may influence hormonal regulation through the hypothalamic-pituitary-adrenal (HPA) axis.

Helpful stress-management techniques include:

• Yoga
• Meditation
• Deep breathing exercises
• Walking
• Mindfulness
• Spending time outdoors
• Relaxation techniques

Prioritize Quality Sleep

Poor sleep is associated with worsening insulin resistance and hormonal imbalance.

Healthy sleep habits include:

• Sleeping 7-9 hours each night
• Maintaining a regular sleep schedule
• Reducing screen exposure before bedtime
• Creating a comfortable sleep environment

Good sleep supports overall endocrine and reproductive health. (Cowan et al. 2023)

Calculate your ideal sleep timings here: “Sleep Calculator“

Common Mistakes to Avoid

Proper management of PCOS requires long-term commitment.

Avoiding these common mistakes may help improve outcomes.

Ignoring Irregular Periods

Some women consider irregular periods “normal” with PCOS and delay seeking medical advice.

However, prolonged absence of menstruation may increase the risk of endometrial hyperplasia due to prolonged exposure to unopposed estrogen.

Assuming Estrogen Is Always Too High

Many women believe PCOS simply causes “high estrogen.”

In reality, estrogen levels may be normal, but because progesterone remains low due to infrequent ovulation, estrogen’s effects on the uterine lining become unbalanced.

Self-Medicating With Hormonal Supplements

Over-the-counter hormone products and supplements should not replace medical evaluation.

Hormonal therapy should only be started under professional guidance.

Neglecting Lifestyle Changes

Medication alone cannot address all aspects of PCOS.

Healthy eating, regular exercise, adequate sleep, and weight management remain fundamental components of long-term care.

Skipping Regular Follow-Up

PCOS is a lifelong condition that requires periodic assessment.

Routine follow-up allows healthcare providers to monitor menstrual health, metabolic risk factors, and treatment effectiveness.

Myths About Estrogen, Progesterone, and PCOS

Myth 1: Women with PCOS always have high estrogen levels.

Fact: Estrogen levels are often normal in women with PCOS. The main problem is that ovulation occurs infrequently, resulting in low progesterone and prolonged exposure of the uterine lining to estrogen without its normal balancing effect.

Myth 2: Low progesterone means permanent infertility.

Fact: Low progesterone in PCOS is usually the result of irregular ovulation. Many women successfully conceive after appropriate lifestyle changes or fertility treatment.

Myth 3: Hormonal imbalance only affects the menstrual cycle.

Fact: Estrogen and progesterone influence many aspects of health, including fertility, bone health, mood, cardiovascular health, and the health of the uterine lining.

Myth 4: Every woman with PCOS needs hormone therapy.

Fact: Treatment depends on individual symptoms, reproductive goals, and overall health. Some women achieve significant improvement through lifestyle modifications alone, while others may benefit from medication.

Myth 5: Once menstrual cycles improve, PCOS is cured.

Fact: PCOS is a chronic condition. Symptoms may improve with treatment, but ongoing healthy lifestyle habits and medical follow-up remain important for long-term health.

Conclusion

PCOS affects much more than androgen levels.

It also disrupts the normal balance of estrogen and progesterone, two hormones that are essential for regular ovulation, menstrual health, fertility, and the protection of the uterine lining.

Because many women with PCOS do not ovulate regularly, progesterone levels remain low while estrogen continues to stimulate the endometrium, leading to irregular periods and an increased risk of endometrial hyperplasia if left untreated.

Early diagnosis, individualized medical care, healthy lifestyle habits, and regular monitoring can help restore hormonal balance, improve reproductive health, and reduce long-term complications.

Understanding the roles of estrogen and progesterone empowers women with PCOS to make informed decisions about their health and seek timely care when needed. (Legro et al. 2013)

Stay tuned with us for more health related topics.

Follow us on LinkedIn and Instagram for more.

Medical Disclaimer!

This article has been reviewed and written under the guidance of our Head Physiotherapist, Dr. Kruti Raj (PT, MUHS,CPT,CMPT). The information shared is intended for educational purposes only and should not be considered a substitute for personalized medical advice, diagnosis, or treatment.

Please consult us or any other qualified healthcare professional before beginning any exercise program, especially if you are experiencing pain, recovering from injury, or managing a medical condition.