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PCOS - Diet, Exercise, and Lifestyle Changes

Course / Diet, Exercise, and Lifestyle Changes

Importance of Diet

When managing PCOS, diet plays a major role in improving health, reducing inflammation, and balancing insulin levels. Many doctors recommend weight loss for these reasons, but focusing only on the number on the scale can sometimes do more harm than good. A healthier approach is to focus on how your body feels, how your energy levels improve, and how your lab results (like blood sugar or insulin) respond — rather than just your weight.

If you’ve struggled to lose weight, don’t be discouraged. You can still make meaningful progress toward better health with small, sustainable changes such as improving sleep quality, managing stress, and focusing on nutrient-rich meals rather than calorie restriction.

Finding the Right Eating Pattern

There is no single “best” diet for PCOS. According to the 2023 International Evidence-Based PCOS Guidelines, a balanced approach to eating is most effective. This means following general healthy eating principles — eating more fruits, vegetables, whole grains, lean proteins, and healthy fats — and avoiding overly restrictive diets.

For those who are overweight, reducing daily calorie intake by around 500–750 calories (about a 30% deficit) can help, but only if it’s sustainable. The most successful diet is one that fits your preferences and lifestyle.

Even women with a normal weight can have PCOS, often with fat accumulating more around the abdomen (belly). This “central fat” is linked to insulin resistance and fertility issues, so maintaining a healthy body composition — not just focusing on weight — is important.

Why Weight Management Matters

Understanding BMI

Body Mass Index (BMI) is one tool doctors use to estimate body fat based on height and weight. While a BMI between 18.5–25 is considered normal, the ranges can differ by ethnicity — for example, South Asian women face higher health risks at lower BMI levels. Talk with your doctor about what’s healthy for you personally.

Health Benefits of Losing Even a Little Weight

Even a modest weight loss (as little as 2.5–5%) can significantly improve health by lowering blood sugar, cholesterol, inflammation, and depression, while also reducing the risk of diabetes and heart disease.

Weight and Fertility

Excess body weight can interfere with ovulation and make it harder to conceive. Studies show that even a 5% weight reduction can improve ovulation and fertility outcomes — whether naturally or through IVF. However, being underweight can also cause problems, so balance is key.

Why Controlling Insulin Is Crucial

Around 70% of women with PCOS have insulin resistance, meaning their bodies produce more insulin than needed. High insulin levels can:

  • Increase androgen (male hormone) production
  • Disrupt ovulation
  • Lead to weight gain and type 2 diabetes

Even women with normal BMI can have insulin resistance, which can impact fertility and long-term health.

Tests for Insulin Resistance

  • OGTT (Oral Glucose Tolerance Test): Measures your body’s response to sugar after fasting.
  • HbA1c: Reflects your average blood sugar over 3 months — a simpler, single blood test.

Your doctor will decide which is best for you.

Dietary Approaches

  • Choose low-glycemic index foods (whole grains, fruits, vegetables).

  • Avoid refined carbs and trans fats (common in fried or processed foods).

  • Include lean proteins and healthy fats (fish, nuts, olive oil).

  • Stay hydrated and eat smaller, more balanced meals throughout the day.

Supplements

While no supplement is a magic fix, some have shown benefits in small studies:

  • Inositol (Myo- and D-Chiro forms): Helps improve insulin sensitivity and menstrual regularity.

  • Vitamin D: Supports hormone balance and may improve ovulation, especially if deficient.

  • Berberine: May lower blood sugar and improve insulin resistance, though research is limited.

Always consult your doctor before taking supplements.

The Importance of Exercise

Exercise improves PCOS symptoms even if you don’t lose weight. It helps lower insulin resistance, boosts fertility, and improves mood.

Guidelines recommend :

  • 150 minutes/week of moderate activity (like brisk walking or cycling)
  • or 75 minutes/week of vigorous activity (like running or HIIT)
  • Plus 2 strength-training sessions per week

Even without weight loss, regular movement can improve insulin sensitivity and hormone balance.

Fertility and Exercise

Studies show that women with PCOS who combine exercise and diet see better fertility outcomes. Even those who focus only on exercise notice more regular periods and higher ovulation rates.

Types of Exercise

Regular exercise helps balance hormones, reduce insulin resistance, and improve mood. A mix of activities works best:

  • Cardio (Aerobic): Walking, jogging, cycling, dancing, or swimming — 30 mins, 5 days a week.

  • Strength Training: Lifting weights, resistance bands, or bodyweight exercises — 2–3 times a week.

  • HIIT: Short bursts of intense activity with rest breaks — 2–3 sessions weekly.

  • Mind-Body Workouts: Yoga or stretching to reduce stress and improve hormone balance.

  • Daily Movement: Take the stairs, walk after meals, and stay active throughout the day.

Tip: Stay consistent and choose exercises you enjoy — that’s the real key to managing PCOS effectively.

Establishing Support

Long-term success comes from steady, realistic changes — not crash diets or extreme workouts.
You can strengthen your plan by:

  • Working with a nutritionist to tailor your diet

  • Seeking behavioral therapy for motivation and self-care

  • Involving family or friends for accountability and emotional support

Studies show that people with social or family support lose more weight and maintain results better than those who go it alone.