PCOS: How you Can Support your Hormones with Nutrition & Lifestyle

Living with Polycystic Ovary Syndrome (PCOS) can feel frustrating and confusing because it affects your body in so many ways. You might struggle with a myriad of symptoms such as irregular periods, stubborn weight gain, acne,  fatigue, facial hair growth, mood swings, or trouble sleeping. Irregular cycles can make trying to conceive challenging and stressful. On top of that, underlying insulin resistance and hormonal imbalances may quietly increase the risk of long-term health concerns. With so many symptoms affecting different parts of the body, it’s no wonder PCOS can feel overwhelming.

The good news is that when you understand what’s actually happening in your body - what’s driving your symptoms and how your hormones, metabolism, and lifestyle interact - PCOS can become much more manageable. Targeted nutrition, intentional movement, and supportive lifestyle strategies can address many of the root causes behind common symptoms.

As Registered Nurses and  Nutrition Coaches, our goal is to help you understand your body and how to reduce symptoms, support cycle and ovulation regulation, improve fertility, and help you improve overall hormone balance. 

Let's break this down!

Understanding What’s Happening in Your Body with PCOS

PCOS is characterized by a combination of:

• Elevated androgens (often called “male-type” hormones like testosterone) can cause symptoms such as excess body hair and acne.

• Irregular or absent ovulation (when an ovary releases an egg), leading to unpredictable periods and making it harder to get pregnant.

• Insulin resistance (even in those who are lean), where your cells don’t respond well to insulin, so your body has to produce more to keep blood sugar stable. This can contribute to weight gain, hormone imbalances, fatigue, and increase long-term health risks.

  
  

These factors create a self-reinforcing feedback loop that disrupts ovulation and hormone balance.

Here’s how that loop works:

1. Insulin resistance develops

Insulin’s job is to move glucose (sugar) from your bloodstream into your cells for energy. In PCOS, your cells become less responsive to insulin.

To compensate, your pancreas releases more insulin.

2. High insulin overstimulates the ovaries

Excess insulin directly signals your ovaries to produce more androgens (like testosterone) [1].

3. Androgens block ovulation

Elevated testosterone interferes with the maturation of the dominant follicle — the egg that’s supposed to grow and release.

No ovulation → no progesterone → no true period.

4. Estrogen remains relatively high

Without ovulation, progesterone stays low while estrogen continues to circulate. This creates estrogen dominance, which can show up as bloating, PMS mood changes, fatigue, heavy or irregular bleeding, and mood swings

5. Androgens drive physical symptoms

Elevated androgens can also cause:

• Acne

• Excess hair growth (chin, chest, lower abdomen)

• Scalp hair thinning

  
  

This is why PCOS is not “just a cycle issue” — it’s a metabolic-hormonal condition.

How PCOS Is Diagnosed (and Why Advocacy Matters)

PCOS is typically diagnosed using the Rotterdam Criteria, which requires two of the following three features [2]:

1. Irregular or absent ovulation (irregular cycles, missed periods)

2. Clinical or biochemical hyperandrogenism

   • Symptoms (acne, hirsutism, hair loss)

   • and/or elevated androgens on bloodwork

3. Polycystic ovaries on ultrasound

   • This does not mean ovarian cysts — it refers to multiple immature follicles
     

⚠️ Important: You do not need polycystic ovaries to have PCOS.

However, there are other markers that can help uncover if this is a condition you are struggling with. Helpful bloodwork to request from your provider includes:

• Fasting insulin (often missed — but critical)

• Fasting glucose

• HbA1c 

• Total & free testosterone

• SHBG (sex hormone binding globulin)

• LH and FSH (ratio and timing is important here!)

• Estradiol & progesterone (timed appropriately)

• Lipid panel

• CRP 

• albumin

• B12 and folate (especially if previously on birth control)

• AMH 

  
  

You are allowed to ask your doctor for these. You are allowed to seek clarity. If a physician is not willing to order these tests, we do encourage you to attain this bloodwork through a private consultation, like those done through the private clinic in Lethbridge, Alberta https://modernmedical.ca/womens-health/

Why Birth Control Doesn’t “Fix” PCOS

Hormonal birth control is often prescribed as first-line treatment for PCOS. They contain synthetic estrogen and progestin, which signal the brain to reduce the release of hormones that stimulate the ovaries. This shuts down ovulation entirely and lowers the production of ovarian androgens such as testosterone. The estrogen component also increases levels of sex hormone–binding globulin (SHBG), a protein that binds testosterone in the bloodstream and reduces the amount of active (free) testosterone circulating in the body.

These effects can help reduce symptoms such as acne, excess hair growth, and irregular menstrual cycles. 

BUT … it does not address the underlying drivers of PCOS  and when birth control is stopped, symptoms often return — sometimes more intensely.

Birth control does not directly improve insulin sensitivity or inflammation, and they do not correct the metabolic and hormonal pathways that contribute to PCOS in the first place. Because of this, other strategies—such as nutrition, exercise, weight management when appropriate, and sometimes supplements or medications that target insulin resistance—may also be considered to address the root drivers of the condition and support long-term metabolic and reproductive health.

This doesn’t mean birth control is “bad.” It means it’s a symptom-management tool, not a root-cause solution.

Can Fasting Help PCOS? What the Research Says

Intermittent fasting is often promoted for insulin resistance — but PCOS is nuanced.

What we know:

• Short-term fasting can improve insulin sensitivity in some populations [3]

• However, women with PCOS often already have elevated cortisol, and prolonged fasting can increase stress hormones, worsen ovulatory suppression, and disrupt thyroid signalling [4]

  
  

Research in PCOS shows:

• Time-restricted eating may improve insulin markers when total calories and protein are adequate [5]

• Aggressive fasting or skipped meals can worsen cycle irregularity and stress responses

• Regular meal timing improves glucose control and hormonal rhythm in PCOS [6]

Bottom line:

For most women with PCOS, consistent meals > prolonged fasting. Blood sugar stability and cortisol balance matter more than eating windows. We do sometimes use a gentle fasting window for clients with PCOS- for example, an eating window of 7 am-7 pm, which is a 12-hour fast overnight. This can be helpful for promoting regular meal timing, a gentle fast, and does not affect cortisol levels like a strict fast would! With blood sugar stability and insulin in check, the next key step is managing body composition and body fat % to a healthy level.

How Fat Loss Supports Ovulation and Blood Sugar Balance in PCOS

Body fat plays an active role in hormone regulation, insulin signalling, and inflammation, all of which are important in PCOS. Even modest fat loss — around 5–10% of body weight — can improve insulin sensitivity, reduce ovarian androgen production, and create a hormonal environment that supports regular ovulation [13]. While fat loss doesn’t directly increase progesterone, restoring ovulation does, which helps balance estrogen and progesterone and can reduce symptoms like bloating, PMS, fatigue, and irregular bleeding.

Lower visceral fat also supports more stable blood sugar throughout the day, improving glucose uptake by muscle, reducing post-meal spikes, and helping energy and hunger cues stay steady. This stability makes it easier to maintain consistent nutrition and lowers stress-related disruptions to ovulation.

It’s important to remember that hormonal health isn’t about reaching the lowest possible body fat. Very low levels can suppress ovulation, raise cortisol, and affect thyroid and leptin (your hunger hormone) signalling. The goal is a body fat range that allows your body to ovulate consistently, support energy, and recover from training.

Because PCOS affects metabolism, extreme dieting, skipped meals, excessive cardio, or chronically low protein can backfire, worsening insulin resistance and hormonal imbalance. A supportive approach combines a modest calorie deficit, adequate protein, progressive strength training, consistent meals, stress management, and quality sleep. In this context, fat loss becomes a tool to support hormonal balance and ovulation, rather than a goal in itself.

What if you have PCOS but are already at a healthy body fat %/body composition?

Stress management and nutrient status are a BIG focus we recommend:

• Eating at maintenance calories

• Focusing on high-nutrient-dense whole foods 90% of the time

• Implementing stress management/down-regulation practices

• Getting at least 7hours of sleep per night

• Strength training 3-5 times per week and doing cardio moderately (not excessively) - approximately 2x per week

• Focusing on 10-12,000 daily steps

With that in mind, what DO we want to focus on as our biggest movers from a nutrition and lifestyle perspective to help manage PCOS?

1. Balance Blood Sugar & Improve Insulin Sensitivity

This is the cornerstone of PCOS management.

Nutrition goals:

• High-protein meals: Aim for 30+ g protein per meal to stabilize blood sugar

• Choose low-glycemic (aka high fiber) carbs: quinoa, oats, lentils, beans, sweet potato

• Balanced nutrient-dense meals of protein + high fiber carbs + healthy fats + vegetables

• Eat within 60 minutes of waking - ensuring your first meal includes 30g of protein  - this supports hunger hormones and blood sugar balance

• Eat every 3–5 hours to stabilize cortisol

• Think "Mediterranean style diet.” 

  
  

Additional Supplementation:

• Magnesium (citrate or bisglycinate): improves insulin signalling [7]

• Myo-inositol: supports ovulation, lowers insulin, improves LH: FSH ratio [8]

• Omega-3s (EPA/DHA): reduce inflammation and androgen production [9]

• Vitamin D 3,000IU with K2: supportive for hormone health and inflammation, and is a common deficiency in women with PCOS

  
  

2. Lower Androgen Levels (Indirectly)

We can’t block androgens with food — but we can remove what’s driving them.

Focus on:

• Blood sugar regulation through the above nutritional strategies

• Zinc-rich foods (pumpkin seeds, oysters, lean beef) and/ or 15-30mg zinc picolinate

• Spearmint tea (1–2 cups daily shown to reduce free testosterone) [10]

• Cruciferous vegetables to support estrogen metabolism

  
  

3. Support Liver & Gut for Hormone Clearance

Hormones must be cleared — not just produced correctly.

Focus on:

• Fiber: 25–35 g/day

• Hydration - aim for 3L of water daily

• Adequate protein for liver detox pathways - Adequate protein ensures your liver has the raw materials it needs to safely process and eliminate toxins, protect cells, and maintain overall metabolic health.

• B vitamins (especially important after oral birth control use, which depletes B6, B12, and folate. If coming off oral birth control, additional supplementation of a B100 complex is recommended) [11]

• Women who struggle with acne may benefit from the removal of dairy due to IGF-1 cascade - dairy can upregulate Insulin-like Growth Factor 1, which can then influence skin oil production and breakouts.

Limit alcohol and ultra-processed foods to reduce liver burden- we recommend focusing on 90% + of your diet to come from whole foods. Learn more about whole foods in our whole food blog here.

4. Manage Stress & Support Adrenal Function

Stress worsens insulin resistance and androgen production.

Prioritize:

• 7–9 hours of sleep

• Daily low-stress movement

• Breathwork, journaling, yoga, or walks

• Caffeine Max 200mg before 12 pm (250ml brewed coffee has approx 100mg caffeine) - NOT on an empty stomach

• Eat regularly — skipping meals increases cortisol

  
  

5. Move for Hormonal Health & Ovulation

Exercise supports PCOS and blood sugar balance independent of weight loss.

Ideal strategies:

• Strength training: 3–4x/week

• Zone 2 cardio: 1–2x/week, 30–45 minutes

• Post-meal walks: 10–15 minutes

  
  

Movement improves insulin sensitivity, egg quality, and cycle regularity [12].

Fertility and PCOS

PCOS can make conceiving more challenging because irregular ovulation affects the timing and release of eggs. Supporting your body with balanced nutrition, stable blood sugar, stress management, strength training, and reaching a body fat range that allows consistent ovulation can improve reproductive potential. Even small, consistent lifestyle changes can make a meaningful difference in cycle regularity and ovulation.

In-depth menstrual cycle and ovulation tracking is extremely helpful when trying to conceive, especially with PCOS - this is something we support our clients with in our fertility programs - here is the link to take a look at the options we offer!

For a deeper look at fertility basics and how to support your reproductive health, check out our Fertility blog here — it’s a great resource for anyone looking to understand their body and optimize their chances of conception.

Bringing It All Together: How to manage PCOS through Nutrition & Lifestyle:

PCOS is a complex, metabolic-hormonal condition, but it is manageable. By focusing on blood sugar balance, supporting liver and hormone clearance, reducing androgen excess, managing stress, building insulin-sensitive muscle, and approaching fat loss thoughtfully, you can support ovulation, improve cycle regularity, and enhance overall metabolic health. Here is a summary of Nutritional and Lifestyle Strategies to support your goals:

Progress may take time — often a few months at minimum — but every step you take to support your hormones lays the foundation for long-term health and fertility. Remember, PCOS is not a failure; it’s a signal to work with your body, not against it. Small, consistent changes compound into meaningful improvements, helping you reclaim balance, confidence, and reproductive potential.

Remember, we are HERE TO HELP! 

If you have PCOS, think you may have PCOS, or simply want to improve your health, please book a free consultation call using this link.

All the love, 

The YQL Team

Authors: Megan Reger and Robyn Stewart

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REFERENCES

1. Dunaif A. Insulin resistance and the polycystic ovary syndrome: mechanism and implications for pathogenesis.Endocrine Reviews. 1997;18(6):774–800.

2. Rotterdam ESHRE/ASRM-Sponsored PCOS Consensus Workshop Group. Revised 2003 consensus on diagnostic criteria and long-term health risks related to polycystic ovary syndrome (PCOS). Human Reproduction. 2004;19(1):41–47.

3. Patterson RE, Laughlin GA, LaCroix AZ, et al. Intermittent fasting and human metabolic health. Annual Review of Nutrition. 2015;35:29–56.

4. Berga SL. Stress and ovulatory dysfunction: a physiological perspective. Endocrinology and Metabolism Clinics of North America. 2000;29(2):309–328.

5. Li C, Sadraie B, Zhang H, et al. Time-restricted eating improves insulin sensitivity in women with PCOS: a pilot study. Journal of Translational Medicine. 2020;18:87.

6. Hutchison SK, Regan F, Livingston M, et al. Effects of meal timing on glucose metabolism and insulin sensitivity in women with polycystic ovary syndrome. Clinical Endocrinology. 2019;90(3):385–394.

7. Guerrero-Romero F, Rodriguez-Moran M. Magnesium improves insulin sensitivity and metabolic control in type 2 diabetes. Diabetes, Obesity and Metabolism. 2007;9(6):820–825.

8. Unfer V, Carlomagno G, Dante G, Facchinetti F. Effects of myo-inositol in women with polycystic ovary syndrome: a systematic review of randomized controlled trials. International Journal of Endocrinology. 2012;2012:1–9.

9. Cussons AJ, Watts GF, Davis SR, Teede HJ. Omega-3 fatty acids and reproductive and metabolic features of polycystic ovary syndrome: a systematic review. American Journal of Clinical Nutrition. 2009;90(1):1–11.

10. Grant P. Spearmint herbal tea has significant anti-androgen effects in women with hirsutism: a randomized controlled trial. Phytotherapy Research. 2010;24(8):1240–1242.

11. Scholes D, LaCroix AZ, Ichikawa LE, et al. Oral contraceptive use and vitamin B12, folate, and homocysteine levels in women. Contraception. 2005;71(3):210–214.

12. Harrison CL, Lombard CB, Moran LJ, Teede HJ. Exercise therapy in polycystic ovary syndrome: a systematic review. Human Reproduction Update. 2011;17(2):171–183.

13. Moran LJ, Noakes M, Clifton PM, et al. Dietary composition in the treatment of polycystic ovary syndrome: a systematic review to inform evidence-based guidelines. Human Reproduction Update. 2013;19(4):322–345.

14. The rest of the information that has not been directly cited in this blog was attained from Functional Nutrition and Metabolism Certification which the author of this blog has completed.  

How to manage PCOS naturally