PCOS (Polycystic Ovary Syndrome)

A common hormonal disorder causing irregular periods and excess androgens.

What is PCOS?

Polycystic Ovary Syndrome (PCOS) is one of the most common endocrine (hormonal) disorders in women of reproductive age, affecting an estimated 1 in 10 women globally.

Despite its name, PCOS is not strictly a disease of the ovaries, nor does it actually involve "cysts" in the traditional sense. It is a complex, systemic metabolic and hormonal imbalance that affects the entire body.

The Triad of PCOS Symptoms

PCOS manifests differently in every woman (often referred to as a "syndrome" because it is a collection of symptoms). However, to be diagnosed with PCOS under the widely accepted Rotterdam Criteria, a woman must exhibit at least two of the following three features:

1. Oligoovulation or Anovulation (Irregular Periods)

Normally, a woman's ovaries develop a dominant follicle that releases an egg every month. In PCOS, the complex balance of hormones (specifically LH, FSH, and insulin) goes awry. The ovaries begin to develop multiple follicles, but none of them ever mature enough to release an egg. Because ovulation doesn't occur, the cycle stalls. The Result: Irregular, infrequent periods (oligomenorrhea), completely absent periods (amenorrhea), or cycles that are unpredictable and heavy when they do arrive.

2. Hyperandrogenism (High "Male" Hormones)

Women naturally produce small amounts of androgens (like testosterone). In PCOS, the ovaries produce excessive amounts of these androgens. The Result: Physical symptoms such as hirsutism (excess, dark hair growth on the face, chest, or back), severe cystic acne (especially along the jawline), and male-pattern hair thinning or hair loss on the scalp. High androgens can also be detected via a blood test even if physical symptoms aren't severe.

3. Polycystic Ovaries on Ultrasound

When a doctor looks at the ovaries via an ultrasound, they may see enlarged ovaries containing 12 or more small follicles (often described as looking like a "string of pearls" around the edge of the ovary). Important Note: These are not actual cysts (which are fluid-filled sacs that can grow large and burst). They are simply arrested, immature follicles that failed to ovulate. You can have polycystic ovaries and NOT have the syndrome, and you can have the syndrome without polycystic ovaries.

The Role of Insulin Resistance

While not officially part of the diagnostic criteria, insulin resistance is the driving force behind PCOS for an estimated 70% to 80% of women who have it.

Insulin is a hormone that regulates blood sugar. When you are insulin resistant, your body's cells don't respond properly to insulin, so your pancreas pumps out more and more to try and force blood sugar into the cells.

• High levels of insulin in the blood stimulate the ovaries to overproduce testosterone.
• High insulin also lowers Sex Hormone-Binding Globulin (SHBG), a protein that normally binds to testosterone and renders it inactive.
• This creates a vicious cycle of weight gain, high androgens, and halted ovulation.

Long-Term Health Implications of PCOS

PCOS is far more than just a fertility or cosmetic issue. If left unmanaged, the chronic metabolic and hormonal imbalances significantly increase the risk for long-term health complications, including:

• Type 2 Diabetes: Over half of women with PCOS develop type 2 diabetes or prediabetes before the age of 40.
• Cardiovascular Disease: Higher risks of high blood pressure, high cholesterol, and heart disease.
• Endometrial Cancer: Without regular periods to shed the uterine lining, the endometrium can build up excessively, increasing the risk of uterine cancer.
• Infertility: PCOS is the leading cause of ovulatory infertility.
• Mental Health: Higher rates of depression, anxiety, and eating disorders.

Managing PCOS

There is currently no "cure" for PCOS, but it is highly manageable through lifestyle interventions and medical support. Treatment is highly personalized based on whether a woman's primary goal is managing symptoms or trying to conceive.

• Lifestyle & Diet: For insulin-resistant PCOS, diet is paramount. Focusing on an anti-inflammatory diet, prioritizing protein and healthy fats, limiting refined carbohydrates, and engaging in regular weight training to improve insulin sensitivity can dramatically restore ovulation.
• Medication:
  • Metformin or Myo-Inositol: Used to improve insulin sensitivity.
  • Hormonal Birth Control: Often prescribed to women not trying to conceive to regulate bleeding and lower androgen levels.
  • Spironolactone: An anti-androgen medication used to treat acne and facial hair.
  • Letrozole or Clomid: Fertility medications used to directly induce ovulation for women trying to get pregnant.

The Bottom Line

PCOS is a complex, frustrating, but highly manageable condition. Because symptoms vary so widely, many women go years without a proper diagnosis. If you experience chronically irregular periods or signs of high androgens, it is vital to speak with an endocrinologist. Utilizing the Bloom App to rigorously track your cycle lengths, BBT (to check if you are ovulating), and symptoms can provide your doctor with the vital data needed for an accurate diagnosis.