Polycystic ovary syndrome

Polycystic ovary syndrome, insulin resistance, weight gain, prediabetes, fatty liver, and treatment

Polycystic ovary syndrome
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Irregular periods, acne, hirsutism, weight gain, infertility, acanthosis nigricans, oily skin, scalp hair thinning
Complications	Insulin resistance, prediabetes, type 2 diabetes, fatty liver disease, metabolic syndrome, sleep apnea, infertility, endometrial hyperplasia
Onset	N/A
Duration	N/A
Types	N/A
Causes	N/A
Risks	N/A
Diagnosis	Clinical history, physical exam, androgen testing, exclusion of similar disorders, pelvic ultrasound when appropriate
Differential diagnosis	N/A
Prevention	N/A
Treatment	Weight loss, low-carbohydrate diet, exercise, metformin, hormonal therapy, anti-androgen therapy, fertility treatment, GLP-1 weight loss when appropriate
Medication	N/A
Prognosis	N/A
Frequency	N/A
Deaths	N/A

W8MD Weight Loss, Sleep and MedSpa can help patients with PCOS, insulin resistance, weight gain, prediabetes, fatty liver disease, and sleep apnea through physician-supervised medical weight loss.

For many patients with polycystic ovary syndrome, even modest weight loss can improve insulin resistance, menstrual irregularity, prediabetes, and metabolic risk.

Structured meal replacements, low-carbohydrate diet planning, and protein support may help selected patients with PCOS and insulin resistance.

Insulin resistance is a major metabolic driver of weight gain, acanthosis nigricans, prediabetes, type 2 diabetes, and fatty liver disease in many patients with PCOS.

Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder affecting girls and women of reproductive age. It is characterized by a combination of menstrual irregularity, excess androgen activity, ovulation problems, acne, excess facial or body hair, scalp hair thinning, weight gain, infertility, and metabolic abnormalities. PCOS is not simply an ovarian cyst problem. It is a whole-body hormonal and metabolic condition in which insulin resistance often plays a central role.

A major underlying driver of PCOS in many patients is insulin resistance. Insulin resistance means that the body’s cells do not respond normally to insulin, causing the pancreas to produce higher insulin levels. High insulin levels can stimulate the ovaries to produce more androgens, worsen ovulation problems, increase hunger and fat storage, and contribute to weight gain, prediabetes, type 2 diabetes, fatty liver disease, and acanthosis nigricans. The 2023 International Evidence-based Guideline for PCOS recognizes insulin resistance as a pathophysiologic factor in PCOS, while noting that routine clinical insulin assays are not recommended for routine diagnosis because they are limited in clinical usefulness."Recommendations From the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome".Journal of Clinical Endocrinology & Metabolism.2023;108(10)

2447-2469.doi:10.1210/clinem/dgad463.PMID:37580861.

W8MD Weight Loss, Sleep and MedSpa Centers can help patients with PCOS by addressing the metabolic root causes that often drive the condition, especially insulin resistance, abdominal obesity, prediabetes, fatty liver disease, sleep apnea, and weight gain. Through physician-supervised medical weight loss, low-carbohydrate diet planning, meal replacements, protein support, GLP-1 weight loss medications when appropriate, metformin when appropriate, sleep apnea screening, and long-term weight maintenance, W8MD helps patients improve the metabolic environment that worsens PCOS symptoms.

Overview

PCOS is one of the most common hormonal disorders in women of reproductive age. The CDC notes that PCOS symptoms may include acne, excess hair growth, darkening of the skin in body creases called acanthosis nigricans, irregular periods, and weight gain. PCOS is also associated with increased risk for type 2 diabetes.Diabetes and Polycystic Ovary Syndrome (PCOS)(link). Centers for Disease Control and Prevention.

PCOS may involve:

• Insulin resistance
• High insulin levels
• Excess androgen production
• Irregular periods
• Anovulation
• Infertility
• Weight gain
• Abdominal obesity
• Acanthosis nigricans
• Acne
• Hirsutism
• Scalp hair thinning
• Prediabetes
• Type 2 diabetes
• Fatty liver disease
• Metabolic syndrome
• Sleep apnea

Insulin resistance as a central cause of PCOS

Although PCOS has genetic, hormonal, ovarian, adrenal, metabolic, and environmental contributors, insulin resistance is one of the most important underlying drivers in many patients. It helps explain why PCOS often clusters with weight gain, belly fat, sugar cravings, prediabetes, fatty liver, acanthosis nigricans, and difficulty losing weight.

Insulin resistance may contribute to PCOS by:

• Increasing circulating insulin
• Stimulating ovarian androgen production
• Reducing sex hormone-binding globulin
• Increasing free testosterone
• Worsening hirsutism
• Worsening acne
• Interfering with ovulation
• Increasing hunger and cravings
• Promoting abdominal fat storage
• Increasing risk of prediabetes
• Increasing risk of type 2 diabetes
• Increasing risk of fatty liver disease

This creates a vicious cycle: insulin resistance raises insulin levels, higher insulin can worsen androgen excess, androgen excess can worsen metabolic dysfunction, and weight gain can further worsen insulin resistance.

PCOS, weight gain, and difficulty losing weight

Many patients with PCOS gain weight easily and have difficulty losing weight. This is not simply a lack of discipline. PCOS may affect appetite, insulin levels, fat storage, cravings, and energy balance. High insulin levels can make the body more likely to store excess energy as fat, especially around the abdomen.

Weight gain in PCOS may be worsened by:

• Insulin resistance
• High refined carbohydrate intake
• Sugary drinks
• Ultra-processed foods
• Sleep apnea
• Poor sleep
• Chronic stress
• Sedentary lifestyle
• Medications that cause weight gain
• Depression or anxiety
• Menopause transition
• Pregnancy-related weight retention
• Repeated crash dieting

PCOS and prediabetes

PCOS increases the risk of prediabetes and type 2 diabetes, especially when insulin resistance, obesity, family history, or gestational diabetes are present. The American Diabetes Association recommends diabetes testing for people with risk factors and notes that people with prediabetes should be tested yearly.Diagnosis and Classification of Diabetes: Standards of Care in Diabetes—2026(link). Diabetes Care.

Testing may include:

• Hemoglobin A1c
• Fasting blood glucose
• Oral glucose tolerance test
• Lipid profile
• Comprehensive metabolic panel
• Liver enzymes
• Blood pressure
• Waist circumference

PCOS and fatty liver disease

Fatty liver disease, now often called metabolic dysfunction-associated steatotic liver disease, is common in patients with insulin resistance. PCOS patients with abdominal obesity, high triglycerides, prediabetes, or type 2 diabetes may be at increased risk.

Improving insulin resistance through weight loss, lower refined carbohydrate intake, increased physical activity, and medical treatment when appropriate may help reduce liver fat and improve metabolic liver risk.

PCOS and acanthosis nigricans

Acanthosis nigricans is a skin finding often associated with insulin resistance. It appears as dark, velvety, thickened skin, commonly on the neck, underarms, groin, or other body folds. The CDC lists darkening of skin in body creases as a symptom associated with PCOS.Diabetes and Polycystic Ovary Syndrome (PCOS)(link). Centers for Disease Control and Prevention.

Acanthosis nigricans may improve when insulin resistance improves through:

• Weight loss
• Low-carbohydrate diet
• Reduced added sugar
• Improved insulin sensitivity
• Physical activity
• Metformin when appropriate
• GLP-1 receptor agonist treatment when appropriate
• Treatment of prediabetes or type 2 diabetes

Symptoms of PCOS

PCOS symptoms vary from patient to patient. Some women have mild symptoms, while others have severe metabolic and reproductive complications.

Common symptoms include:

• Irregular periods
• Missed periods
• Heavy bleeding
• Anovulation
• Difficulty getting pregnant
• Acne
• Oily skin
• Hirsutism
• Excess facial hair
• Excess chest or back hair
• Scalp hair thinning
• Weight gain
• Difficulty losing weight
• Acanthosis nigricans
• Skin tags
• Sugar cravings
• Fatigue
• Mood changes
• Depression
• Anxiety

Complications of PCOS

Untreated or poorly controlled PCOS may increase risk for:

• Infertility
• Prediabetes
• Type 2 diabetes
• Gestational diabetes
• Metabolic syndrome
• Fatty liver disease
• Hypertension
• Dyslipidemia
• Obstructive sleep apnea
• Endometrial hyperplasia
• Endometrial cancer
• Depression
• Anxiety
• Low self-esteem

Diagnosis of PCOS

Diagnosis is based on clinical history, physical examination, laboratory testing, and exclusion of other causes. The commonly used Rotterdam criteria diagnose PCOS when two of the following three features are present, after other disorders are excluded:

• Irregular ovulation or anovulation
• Clinical or biochemical hyperandrogenism
• Polycystic ovarian morphology on ultrasound

The 2023 International PCOS Guideline also supports using the anti-Mullerian hormone test in selected adults as an alternative to ultrasound for defining polycystic ovarian morphology, but not as a single test by itself."Recommendations From the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome".Journal of Clinical Endocrinology & Metabolism.2023;108(10)

2447-2469.doi:10.1210/clinem/dgad463.PMID:37580861.

Tests used in PCOS evaluation

Testing may include:

• Pregnancy test when appropriate
• Total testosterone
• Free testosterone or calculated free androgen index
• DHEA-S
• 17-hydroxyprogesterone
• Prolactin
• Thyroid-stimulating hormone
• Luteinizing hormone
• Follicle-stimulating hormone
• Anti-Mullerian hormone in selected adults
• Hemoglobin A1c
• Fasting glucose
• Oral glucose tolerance test
• Lipid profile
• Liver enzymes
• Pelvic ultrasound when appropriate

Conditions that can mimic PCOS

Before diagnosing PCOS, clinicians may need to exclude:

• Pregnancy
• Hypothyroidism
• Hyperprolactinemia
• Nonclassic congenital adrenal hyperplasia
• Cushing syndrome
• Androgen-secreting tumors
• Primary ovarian insufficiency
• Medication-induced androgen excess
• Eating disorders

Treatment goals

PCOS treatment depends on the patient’s symptoms and goals. Major goals include:

• Improve insulin resistance
• Achieve sustainable weight loss
• Restore or improve ovulation
• Regulate menstrual cycles
• Reduce androgen symptoms
• Improve acne
• Reduce unwanted hair growth
• Treat infertility when desired
• Prevent prediabetes and type 2 diabetes
• Improve fatty liver risk
• Improve acanthosis nigricans
• Improve sleep apnea
• Protect the endometrium
• Improve quality of life

Diet and weight loss for PCOS

Diet and weight loss are among the most important treatments for PCOS when insulin resistance and excess weight are present. Weight loss can improve insulin sensitivity, reduce androgen levels, improve menstrual regularity, reduce diabetes risk, improve fatty liver risk, and help acanthosis nigricans fade over time.

Effective dietary approaches may include:

• Low-carbohydrate diet
• Low-glycemic diet
• Mediterranean diet
• High-protein nutrition
• Reduced added sugar
• Reduced refined starches
• Increased non-starchy vegetables
• Adequate fiber
• Meal replacements when appropriate
• Avoidance of sugary drinks
• Calorie reduction when weight loss is needed

Low-carbohydrate diet for PCOS

A low-carbohydrate diet can be especially useful for PCOS patients with insulin resistance, prediabetes, belly fat, fatty liver, sugar cravings, or acanthosis nigricans. Reducing refined carbohydrates can lower glucose and insulin demand, improve satiety, and reduce cravings in many patients.

Foods often emphasized include:

• Eggs
• Fish
• Poultry
• Lean meat
• Greek yogurt
• Cottage cheese
• Tofu
• Tempeh
• Low-carb protein shakes
• Non-starchy vegetables
• Salads
• Avocado
• Nuts in controlled portions
• Olive oil
• Beans or lentils in individualized portions

Foods often reduced include:

• Sugary drinks
• Candy
• Pastries
• White bread
• White rice
• Pasta
• Sweetened cereals
• Fruit juice
• Large portions of potatoes
• Ultra-processed snack foods

Exercise and PCOS

Physical activity improves insulin sensitivity even before major weight loss occurs. Exercise may improve blood glucose, mood, sleep, cardiovascular health, and body composition.

Helpful activities include:

• Walking
• Post-meal walking
• Strength training
• Resistance bands
• Cycling
• Swimming
• Pilates
• Yoga
• Interval training when appropriate

Resistance training is especially helpful because increased muscle mass improves glucose disposal and insulin sensitivity.

Medications for PCOS

Medication choice depends on symptoms, pregnancy goals, metabolic risk, and patient preference.

Common medications may include:

• Metformin
• Combined oral contraceptives
• Spironolactone
• Topical acne treatments
• Anti-androgen therapy
• Letrozole for ovulation induction
• Clomiphene in selected patients
• Fertility medications
• GLP-1 receptor agonists when appropriate for weight loss
• Tirzepatide or semaglutide when appropriate for obesity care

The Endocrine Society guideline notes that hormonal contraceptives and metformin are treatment options in adolescents with PCOS, and that metformin may be beneficial for metabolic and glycemic abnormalities and menstrual irregularity, though it has limited or no benefit for hirsutism, acne, or infertility.Diagnosis and Treatment of Polycystic Ovary Syndrome: An Endocrine Society Clinical Practice Guideline(link). Journal of Clinical Endocrinology & Metabolism / PMC.

GLP-1 medications and PCOS

For patients with PCOS and obesity, GLP-1 receptor agonists and related incretin-based medications may help with weight loss and insulin resistance when medically appropriate. These may include:

• Semaglutide
• Wegovy
• Ozempic
• Tirzepatide
• Zepbound
• Mounjaro
• Liraglutide
• Saxenda

These medications are not first-line treatments for every PCOS patient, but they may be useful in selected patients with obesity, prediabetes, type 2 diabetes, fatty liver risk, sleep apnea, or failure of lifestyle-only approaches.

Fertility treatment in PCOS

PCOS is a common cause of ovulatory infertility. Many patients can conceive with appropriate treatment. Weight loss may improve ovulation in patients with excess weight and insulin resistance.

Fertility approaches may include:

• Weight loss when appropriate
• Metformin in selected patients
• Letrozole
• Clomiphene
• Ovulation monitoring
• Reproductive endocrinology referral
• Injectable fertility medications
• In vitro fertilization when needed

Patients trying to conceive should review all medications, including weight loss medications, with their clinician because many are not recommended during pregnancy.

PCOS and sleep apnea

Obstructive sleep apnea is more common in patients with PCOS, especially when obesity, insulin resistance, fatigue, snoring, or daytime sleepiness are present. Sleep apnea can worsen insulin resistance, blood pressure, fatigue, cravings, and weight gain.

Symptoms suggesting sleep apnea include:

• Loud snoring
• Witnessed breathing pauses
• Morning headaches
• Daytime sleepiness
• Fatigue
• Brain fog
• High blood pressure
• Weight gain
• Waking up choking or gasping

How W8MD can help PCOS patients

W8MD Weight Loss, Sleep and MedSpa Centers can help PCOS patients by focusing on the root metabolic drivers of PCOS, especially insulin resistance, weight gain, fatty liver risk, prediabetes, and sleep apnea.

W8MD may help with:

• Physician-supervised medical weight loss
• Evaluation of insulin resistance
• Prediabetes screening
• Type 2 diabetes risk reduction
• Fatty liver disease risk assessment
• Acanthosis nigricans recognition
• Low-carbohydrate diet planning
• Meal replacements
• Protein planning
• Metformin discussion when appropriate
• GLP-1 weight loss evaluation when appropriate
• Semaglutide options when appropriate
• Tirzepatide options when appropriate
• Sleep apnea screening
• Home sleep test
• CPAP support
• Long-term weight maintenance

Can PCOS be reversed?

PCOS itself may not always be permanently cured, but many of its metabolic features can improve dramatically. In patients whose PCOS is driven by insulin resistance and excess weight, a medically supervised weight loss and insulin-resistance treatment plan may improve or reverse:

• Prediabetes
• Insulin resistance
• Acanthosis nigricans
• Fatty liver disease risk
• Irregular menstrual cycles
• Ovulation problems
• Sugar cravings
• Abdominal obesity
• Sleep apnea severity
• High triglycerides

The degree of improvement varies by patient, genetics, age, weight loss amount, medication use, sleep quality, and long-term adherence.

Why W8MD may be a good choice for PCOS and weight gain

W8MD combines obesity medicine, nutrition, sleep medicine, and medication management. This is important because PCOS is not only a gynecologic condition; it is often a metabolic and endocrine condition linked to insulin resistance.

Reasons patients may choose W8MD include:

• Over 15 years of medical weight loss experience since 2011
• Physician-supervised care
• Focus on insulin resistance as a root cause
• Low-carbohydrate diet support
• Meal replacement options
• GLP-1 and incretin medication knowledge
• Sleep apnea testing and treatment
• Brooklyn and Philadelphia locations
• Regional access for New York, New Jersey, Pennsylvania, Delaware, Connecticut, and nearby areas
• Telemedicine when appropriate
• Long-term maintenance planning

Frequently asked questions

What is PCOS?

PCOS is a common endocrine and metabolic disorder that can cause irregular periods, excess androgens, acne, unwanted hair growth, weight gain, and fertility problems.

Is insulin resistance the root cause of PCOS?

Insulin resistance is a central underlying cause or driver in many patients with PCOS. It is not the only cause, but it helps explain weight gain, high androgen levels, prediabetes, fatty liver, and acanthosis nigricans.

Why does PCOS cause weight gain?

PCOS can promote weight gain through insulin resistance, high insulin levels, cravings, appetite changes, androgen excess, poor sleep, sleep apnea, and metabolic dysfunction.

Can weight loss improve PCOS?

Yes. Weight loss can improve insulin resistance, menstrual regularity, ovulation, prediabetes, fatty liver risk, acanthosis nigricans, and sleep apnea in many patients.

Can acanthosis nigricans go away?

Acanthosis nigricans often improves when insulin resistance improves. Weight loss, lower carbohydrate intake, improved glucose control, and insulin-sensitizing treatment may help.

Can PCOS lead to diabetes?

Yes. PCOS increases the risk of prediabetes and type 2 diabetes, especially when insulin resistance and excess weight are present.

What diet is best for PCOS?

Many patients benefit from a low-carbohydrate, low-glycemic, high-protein, or Mediterranean-style diet. The best diet is one that improves insulin resistance and can be followed long term.

Can W8MD help with PCOS-related weight gain?

Yes. W8MD can help identify insulin resistance, design a weight loss plan, consider medications when appropriate, screen for sleep apnea, and create a long-term maintenance plan.

Are GLP-1 medications useful in PCOS?

They may be useful for selected PCOS patients with obesity, prediabetes, type 2 diabetes, or weight-related complications, but they require medical evaluation and monitoring.

Can PCOS affect fertility?

Yes. PCOS can cause irregular ovulation and infertility. Weight loss, insulin resistance treatment, and ovulation medications may help many patients.

When to call a doctor

Patients should seek medical care for:

• No periods for several months
• Heavy or prolonged bleeding
• Difficulty getting pregnant
• Rapid hair growth
• Severe acne
• Sudden virilization symptoms
• Darkening skin folds
• Unexplained weight gain
• Symptoms of diabetes
• Severe pelvic pain
• Depression or anxiety
• Snoring and daytime sleepiness

See also

• Polycystic ovary syndrome
• PCOS
• Insulin resistance
• Prediabetes
• Type 2 diabetes
• Metabolic syndrome
• Fatty liver disease
• Acanthosis nigricans
• Obesity
• Weight gain
• Weight loss
• Medical weight loss
• Low-carbohydrate diet
• Metformin
• GLP-1 receptor agonist
• Semaglutide
• Tirzepatide
• Sleep apnea
• W8MD Weight Loss, Sleep and MedSpa

Further reading

• "Recommendations From the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome".Journal of Clinical Endocrinology & Metabolism.2023;108(10)

2447-2469.doi:10.1210/clinem/dgad463.PMID:37580861.

• Diabetes and Polycystic Ovary Syndrome (PCOS)(link). Centers for Disease Control and Prevention.
• Diagnosis and Treatment of Polycystic Ovary Syndrome: An Endocrine Society Clinical Practice Guideline(link). Journal of Clinical Endocrinology & Metabolism / PMC.
• Diagnosis and Classification of Diabetes: Standards of Care in Diabetes—2026(link). Diabetes Care.
• Acanthosis Nigricans(link). StatPearls, NCBI Bookshelf.

External links

• W8MD Weight Loss, Sleep and MedSpa
• CDC - Diabetes and PCOS
• 2023 International Evidence-based Guideline for PCOS
• Endocrine Society Clinical Practice Guideline on PCOS