A brief introduction to Polycystic Ovary Syndrome (PCOS)

Are you dealing with the stubborn symptoms of PCOS without any excess weight gain? You could be suffering from a unique form called Lean PCOS. This is different from the typical PCOS. The typical form is often linked with higher body weight. While lean PCOS affects women with a low or average BMI. Despite having a lower body weight, you can still experience disruptive symptoms. These may include irregular periods, acne, and fertility challenges.

Due to the absence of obvious weight gain, lean PCOS is often overlooked. This can make it challenging to diagnose and manage hormonal fluctuations. At Gynoveda, we specialize in understanding the distinct challenges of lean PCOS. Our holistic approaches focus on restoring your hormonal harmony and reproductive health. This enables you to live with confidence and clarity.

Explore this article to learn more about lean PCOS. It covers the symptoms, causes, and treatments.

Overview of Lean PCOS and how it differs from traditional PCOS

Lean PCOS occurs in women who have PCOS, though they maintain an average or low body weight. Unlike traditional PCOS, weight gain is a standard feature. But, in lean PCOS and pregnancy, this is not the case. Pregnancy challenges can occur even without any weight-related symptoms. Lean PCOS generally occurs in women with a standard or low BMI. Lean PCOS is more challenging to diagnose as it does not fit the typical PCOS category.

Importance of understanding Lean PCOS specifically for early detection and proper management

Understanding the condition is vital for early detection and lean PCOS treatment. This condition occurs without the usual signs of obesity or weight gain. There is a high chance that women might overlook other symptoms. These symptoms can impact a woman's health. For women who desire pregnancy, understanding the condition is important. It can help optimize fertility treatments. This can increase the chances of conception.

Are you unaware of lean PCOS? Explore the symptoms, causes, and treatment options in this comprehensive guide:

What is Lean PCOS?

Definition and Characteristics of Lean PCOS

Lean PCOS is a hormonal condition like traditional PCOS. Several symptoms characterize lean PCOS. These include irregular menstrual cycles, high levels of male hormones, and ovarian cysts. While weight gain is a typical sign of traditional PCOS, women with lean PCOS do not gain any excess body fat. Without any obvious weight-related symptoms, lean PCOS is harder to detect.

Comparison of Lean PCOS vs. Classic PCOS

Differences in BMI, insulin resistance, and weight-related symptoms

The primary distinction between lean PCOS and classic PCOS lies in the body weight. Some others are:

• Women with traditional PCOS struggle with obesity. But those with lean PCOS maintain a healthy or low body weight. Classic PCOS is easy to recognize due to this characteristic. But, lean PCOS is often overlooked or misdiagnosed.

• Women with lean PCOS have an underweight BMI. Classic PCOS correlates with a higher BMI.

• A woman with lean PCOS has lower insulin resistance compared to traditional PCOS. But insulin issues can still be present. Both types can experience these issues.

There is a link between lean PCOS and pregnancy. Women experience reproduction issues with ovulation and pregnancy.

Misconceptions and Common Myths About Lean PCOS

Lean women can't have PCOS

‘PCOS only affects overweight women’. A common misconception is that lean women can’t have PCOS. Also, people think that lean PCOS is less severe than classic PCOS. As it does not cause obvious obesity symptoms, it does not mean it is less severe. While weight gain is a crucial sign of PCOS, lean women can still suffer from this hormonal disorder. These misconceptions often delay diagnosis and treatment. This happens because they don’t show any clear signs. For example, there is no noticeable weight gain or insulin resistance.

Prevalence and Diagnosis Challenges

Lack of visible weight issues

The lack of visible weight issues makes diagnosis more difficult. This also delays the start of immediate lean PCOS treatment. Almost 70% of women were not diagnosed due to the lack of a typical PCOS image. Traditional diagnostic criteria focus on weight issues and insulin resistance. Although, these may not be prominent in lean PCOS.

Symptoms of Lean PCOS

Irregular Menstrual Cycles (Oligomenorrhea and Amenorrhea)

Why women with Lean PCOS experience irregular or absent periods

• Women with lean PCOS experience irregular or absent periods due to hormonal imbalances.

• Particularly, elevated androgens and insulin resistance disrupt ovulation in women with PCOS.

• This hormonal imbalance affects the release of eggs. As a result, it leads to irregular menstrual cycles.

• Despite their weight, women with lean PCOS experience symptoms. These symptoms are the same as those seen in classic PCOS.

Link between hormonal imbalances and menstrual dysfunction

Key hormones like estrogen, progesterone, FSH, and LH play a crucial role. These hormones are essential for women's reproductive health. Women with lean PCOS often have hormonal imbalances. That means their bodies produce excess levels of certain hormones. Or, they don’t produce enough of others. These hormonal dysfunctions affect the maturation and release of eggs. This imbalance can disrupt the normal menstrual cycle. As a result, the period can become irregular.

Hyperandrogenism (Excess Androgen Levels)

Symptoms: Hirsutism, acne, oily skin, and hair thinning or hair loss

Women with lean PCOS can experience various symptoms. It’s because of excessive androgen levels or hyperandrogenism. Such symptoms include:

• Hirsutism

• Acne

• Excessive oily skin

• Hair thinning

• Body and face hair

These can result from hormonal imbalances. Hyperandrogenism stimulates hair growth in unwanted areas. This occurs on the scalp rather than elsewhere. If you are experiencing these symptoms, it is important to seek immediate treatment. Lean PCOS treatment can help manage the condition effectively.

Why do these symptoms occur despite a normal BMI

The above lean PCOS symptoms occur in women with normal BMI due to hormonal imbalances. The ovaries and adrenal glands produce excess androgen. This occurs even without excess body fat. Besides, insulin resistance further disrupts hormonal balances, affecting these effects despite normal BMI.

Fertility Issues

Impact of Lean PCOS on ovulation and conception difficulties

Fertility issues often occur among women. Lean PCOS disrupts the hormonal balance. This balance is essential for ovulation. Excess androgen and insulin resistance impair the maturation of ovarian follicles in women. This leads to irregular or missed periods. As a result, women with lean PCOS experience difficulty in conception.

Mood Swings, Anxiety, and Depression

The effect of hormonal fluctuations on mental health

Other than physical health, lean PCOS-related hormonal fluctuations can also impact mental health. Hormonal imbalances and insulin resistance can contribute to mental health issues. These conditions affect the brain and mood regulation.

• Mood swings

• Anxiety

• Depression

• Irritability.

Dealing with the physical symptoms of lean PCOS can also add to the emotional stress.

Fatigue and Low Energy Levels

Lethargy without any heavy activity is another significant sign of lean PCOS. These common symptoms are often overlooked symptoms of lean PCOS. Hormonal disruptions, particularly insulin resistance, can lead to this symptom in women. When your body can't use insulin, it can cause problems. This can lead to fluctuating blood sugar levels. This can cause tiredness. It can also result in a lack of energy. Poor sleep quality can drain energy. Excess stress or anxiety can also contribute to low energy levels.

Insulin Resistance in Lean PCOS

Explanation of insulin resistance and its subtle presentation in lean individuals

Insulin resistance in lean PCOS happens when the body doesn't respond to insulin. This occurs despite having a normal body weight. As a result, insulin levels rise. Higher insulin levels lead to an increase in androgen production. This disruption in hormone levels can interfere with ovulation. Even if you do not gain weight, insulin resistance can be present in subtle amounts in women with lean PCOS. Despite its subtleness, it still contributes to irregular periods, acne, and fertility issues.

Causes of Lean PCOS

Hormonal Imbalances

Elevated androgen levels (testosterone and DHEA) and their effects

Hormonal imbalances in lean PCOS occur due to insulin resistance. They also result from imbalanced LH secretion. Insulin resistance excites the ovaries and adrenal glands, which produce more androgens. These excess levels of male hormones (androgens) lead to symptoms like hirsutism. It is a condition of excess hair growth. Other symptoms include acne, oily skin, and hair thinning. Elevated androgen levels also affect the menstrual cycle in women. They interfere with normal ovulatory functions.

Role of estrogen and progesterone imbalances

Excess levels of male hormones (androgens) can lead to various symptoms. These include hirsutism, which is excess hair growth, acne, oily skin, and hair thinning. Elevated androgen levels also affect the menstrual cycle in women. In lean PCOS, estrogen and progesterone levels can also disrupt your hormones. This disruption especially impacts the menstrual cycle and fertility. Your periods may become irregular. They can even be absent due to high levels of estrogen and low levels of progesterone. This hormonal imbalance also leads to a thickened uterine lining. A thickened uterine lining can cause further fertility challenges in lean PCOS.

Insulin Resistance (IR)

How IR may still play a role in Lean PCOS even without obesity

If you wonder what causes lean PCOS other than obesity, insulin resistance can be the answer. Insulin resistance occurs when your cells fail to respond to insulin. This failure stimulates the body to produce more insulin. Insulin resistance also raises androgen levels, which disrupt ovulation and worsen PCOS symptoms. Even if there is no sign of weight gain or obesity, IR fuels hormonal imbalances.

Impact on ovulation and hormone regulation

Women with lean PCOS often experience irregular periods. Some may also have absent periods. This is due to hormonal imbalances in elevated androgen levels and insulin resistance. It also impacts the normal maturation of ovarian follicles. This disruption also affects egg production. Low progesterone levels also affect hormone regulation in women. Thus, these hormonal imbalances affect fertility. As a result, it becomes harder for lean women to conceive.

Genetic Factors

Genetic Predisposition to PCOS and Lean PCOS

A family history of lean PCOS increases the likelihood of developing the condition. Some inherited traits can contribute to lean PCOS. These traits include hormone regulation, insulin sensitivity, and ovarian function. Sometimes, your genetics may cause you to have PCOS, even if you are not obese.

Environmental and Lifestyle Factors

Impact of stress, diet, and other environmental triggers on Lean PCOS development

There are also environmental factors that can trigger lean PCOS among women. Lifestyle factors can play a role as well. These external influences can contribute to the development of the condition.

• Higher stress levels can worsen insulin sensitivity and hormonal imbalances.

• Unhealthy diets that are high in sugars and fats can disrupt hormonal regulation. This can worsen the lean PCOS symptoms.

Diagnosing Lean PCOS

Criteria for PCOS Diagnosis (Rotterdam Criteria)

Overview of the diagnostic criteria: irregular cycles, hyperandrogenism, and polycystic ovaries

If you are unsure about how to diagnose lean PCOS and what the criteria are, consult our experts at Gynoveda. They will assess your symptoms. They will conduct hormonal tests. They will perform an ultrasound to determine your ovarian structure.

The diagnostic criteria include three main factors:

• Irregular cycles

• Hyperandrogenism

• Polycystic ovaries

Women with lean PCOS may experience irregular or absent periods. They may also have high levels of male hormones. Additionally, their ovaries might be large in size and contain many small cysts. A diagnosis requires at least two of these three criteria to be present.

Diagnostic Challenges in Lean PCOS

Why Lean PCOS is harder to diagnose compared to regular PCOS

Lean PCOS occurs with subtle symptoms in women with average body weight. Healthcare providers often overlook the condition. Many typical indicators, like obesity or weight gain, are absent in lean PCOS. Also, hormonal imbalances, insulin resistance, and elevated androgens may not be as clear. These issues may go unnoticed without thorough testing. This combination of factors can delay diagnosis and treatment.

The Importance of Thorough Blood Tests

Hormone levels, insulin, glucose

Thorough blood tests are important in diagnosing lean PCOS. They help assess hidden hormonal imbalances. These tests measure key hormone levels and glucose metabolism. This provides a clearer picture of the underlying causes. Lean PCOS often lacks visible signs, such as weight gain. So, blood tests are essential. These tests can identify the condition and guide effective treatment.

Role of Pelvic Ultrasound

Detecting polycystic ovaries

Pelvic ultrasound plays an important role in finding polycystic ovaries. This is one of the diagnostic criteria. During the ultrasound, your doctor can visualize the ovaries. They can also check for the presence of many follicles or cysts. This diagnostic technique confirms whether your ovaries have a polycystic appearance or not. Pelvic ultrasound can recognize lean PCOS when women have other less obvious symptoms.

Ruling Out Other Conditions

Differential diagnosis to rule out thyroid dysfunction, adrenal hyperplasia, or hyperprolactinemia

For diagnosing lean PCOS, it's essential to identify other conditions with similar symptoms. Other conditions like thyroid dysfunction can cause irregular periods, weight changes, and fatigue.

• A blood test can assess thyroid hormones to differentiate it from PCOS.

• Besides, Adrenal hyperplasia can also cause excess androgen production in women.

• A hyperandrogenism test can clarify this symptom. Elevated prolactin levels signifies Hyperprolactinemia.

• Prolactin-level testing can distinguish this condition. It ensures an accurate detection. This helps in the treatment of the actual underlying issue.

Treatment Options for Lean PCOS

Lifestyle Modifications

Diet and Nutrition

Importance of a balanced diet and managing insulin sensitivity through low glycemic index (GI) foods

If you don’t know how to cure lean PCOS, this section of lifestyle modification for lean PCOS, might help you. Let’s know the benefits of having a balanced diet:

• A balanced diet chart for lean PCOS is crucial for managing lean PCOS. They particularly improve insulin sensitivity.

• Eating low glycemic index (GI) is beneficial food for lean PCOS. Foods such as whole grains, green leafy vegetables, and lean proteins are good. They help regulate blood sugar levels. They also reduce insulin spikes.

• Insulin resistance plays a significant role in lean PCOS, it's important to manage it. Low GI foods help prevent glucose fluctuations. This improvement in glucose control enhances the body's insulin response.

• A balanced lean PCOS Indian diet is rich in fiber and healthy fats. It helps reduce androgen levels. Additionally, it supports hormonal balance.

Exercise

Role of physical activity in regulating hormones and improving insulin sensitivity

Physical activity, such as regular exercise, helps the body use insulin better. This reduces insulin resistance. Here are the benefits: 

• By lowering insulin levels, physical activity also decreases excess androgen production.

• It helps to balance hormones and ease symptoms like irregular periods and acne.

• Exercise promotes better blood circulation. It also boosts mood through the release of endorphins. Additionally, it helps reduce stress.All these lifestyle changes to cure lean PCOS contribute to healthier hormone regulation. Including activities like strength training, cardio, and yoga can improve metabolic health. These activities can also help with PCOS management.

Stress Management

Stress reduction techniques and their benefits for hormone balance

Stress reduction techniques are beneficial for hormone balance in lean PCOS. These techniques include yoga, meditation, and deep breathing. Extreme stress increases cortisol levels. Elevated cortisol can worsen insulin resistance. It can also stimulate excess androgen production. Stress can lead to more severe PCOS symptoms. These symptoms include irregular periods, acne, and hair thinning. Stress-reducing lean PCOS treatment helps regulate hormones. They promote regular ovulation. They also improve well-being. By practicing stress-reducing techniques, women can achieve a more balanced endocrine system. This makes it easier to manage the symptoms of lean PCOS.

Medical Treatment

Hormonal Therapies

Use of birth control pills to regulate menstruation and control androgen level

Doctors often suggest birth control pills to treat PCOS. These pills help regulate menstruation and control androgen levels. The hormonal contraceptives work by providing a steady dose of estrogen and progestin. As a result, they restore regular menstrual cycles. They also reduce the symptoms of lean PCOS. Additionally, the pill helps protect the uterine lining. This reduces the risk of endometrial hyperplasia. Also, birth control pills can be an effective management option. They are especially helpful for women with lean PCOS.

Anti-androgen medications to reduce acne, hirsutism, and hair loss

Some anti-androgen medications can be effective solutions for reducing acne. They also manage hirsutism and hair loss caused by lean PCOS. For instance, medicines like Spironolactone work by targeting androgen levels. They help reduce oil production in the skin. These medications block the effects of male hormones in women. It is important to consult with your doctor before taking any lean PCOS treatment. Be sure to discuss the potential side effects with them.

Insulin-Sensitizing Medications

Metformin for improving insulin sensitivity in lean women with PCOS

Metformin is an effective medication. It helps manage type 2 diabetes. It also helps with insulin resistance in women. This is particularly true for women with lean PCOS. It helps cells use insulin more in an effective way. This reduces blood sugar levels. Metformin also improves insulin sensitivity. It restores regular ovulation. This can increase the chances of conception.

Fertility Treatments

Options like Clomiphene, Letrozole, or IVF for women struggling with fertility

Many women can conceive after taking some effective medication. Those struggling with fertility issues can use these medicines with some lifestyle changes. Clomiphene, Letrozole, or IVF can be effective treatment options. These treatments may help improve your chances of conceiving. But, it's essential to consult fertility experts before you undergo treatment. They can determine the best treatment plan according to your health, severity of PCOS, and age.

Alternative and Complementary Therapies

Supplements: Inositol, Omega-3, Vitamin DIf you still cannot find how to treat lean PCOS, here is one of the alternative therapy. Medical treatment for lean PCOS, many women find relief through complementary therapy. For instance:

• Popular supplements like Inositol have shown promising results. They help improve insulin sensitivity. They also assist in regulating menstrual cycles.

• Besides, Omega-3 fatty acids can also help reduce inflammation and insulin resistance.

• Taking vitamin D supplements can also regulate hormones. Also, it can improve mental calmness in women.

Acupuncture and Ayurveda as complementary options for hormonal regulation

Acupuncture is an ancient medical practice. It involves inserting thin needles into specific points of the body. Here are the benefits:

• This lean PCOS fertility treatment option can help balance the production of hormones. Acupuncture can regulate hormones like estrogen, progesterone, and testosterone.

• It can also improve ovulation and increase the chances of fertility. Ayurveda is another best treatment for lean PCOS.

Ayurveda offers holistic approaches like herbal remedies, diet plan, and lifestyle changes. These can help regulate hormones and reduce inflammation in lean PCOS.

Long-Term Health Risks of Lean PCOS 

Endometrial Cancer Risk

How irregular menstruation increases the risk of endometrial hyperplasia and cancer. One of the significant long-term health risks with lean PCOS. If your periods are irregular, the ovaries don't release an egg each month. If ovulation does not occur, the progesterone is not made, and the lining is not shed. As a result, the growth of the endometrial lining can lead to another condition. Endometrial hyperplasia is the name of the name of this condition. In some cases, hyperplasia can progress to endometrial cancer.

Type 2 Diabetes and Cardiovascular Disease

Increased risk due to insulin resistance, even in lean women

Lean PCOS can increase the risk of developing type 2 diabetes. Due to insulin resistance, it can also increase the risk of cardiovascular disease. Even in lean PCOS, the body cells become less responsive to insulin. As a result, it can result in high blood sugar levels. Insulin resistance can also be related to chronic inflammation. It can damage blood vessels and lead to heart disease.

Mental Health Risks 

Long-term effects of untreated mood swings, anxiety, and depression

Women who have lean PCOS often experience many mental health challenges. These challenges can be mood swings, anxiety, or depression. Severe mental health conditions can impact your daily life,  relationships, and well-being. They can lead to more complicated physical health problems if left untreated. In some cases, women struggling with these issues may turn to alcohol or drugs as a coping mechanism. In some cases, untreated mental health issues can lead to suicidal attempts.

Infertility and Pregnancy Complications

Risks related to fertility and potential pregnancy complications if left untreated

If you leave lean PCOS symptoms untreated, it can impact fertility. It can also increase the risk of pregnancy complications. PCOS disrupts the natural menstrual cycle and hampers egg production or ovulation. Anovulation can occur when the ovaries don't release eggs. Also, high levels of androgen can interfere with the natural growth or release of eggs. Besides, women with lean PCOS  have a higher risk of miscarriage during the first trimester. Even in pregnant women, gestational diabetes, preeclampsia, and premature birth can happen. Early treatment can improve fertility outcomes and reduce the risk of pregnancy complications.

Myths and Misconceptions about Lean PCOS

“Only Overweight Women Have PCOS"

Debunking the myth and explaining how Lean PCOS is underdiagnosed

This misconception that PCOS only affects overweight women is dangerous. It can delay diagnosis and result in wrong treatment. Lean PCOS, a variant of this condition, can also affect women even with a normal or underweight. As the obvious symptoms are absent, many doctors overlook other symptoms. Also, women often avoid medical support even if they have missed periods or other issues. If you experience any of the symptoms of lean PCOS, consult a doctor for proper treatment.

"Lean Women Don't Need to Worry About Insulin Resistance"

Clarifying that insulin resistance can still be a concern, even in lean women

Another misconception is that only fat women are at risk of insulin resistance. But lean women can also experience insulin sensitivity, those who have lean PCOS. Even in lean PCOS, women may still face metabolic disruption and insulin resistance. Addressing this condition can increase the chances of fertility and a healthy pregnancy. Also, you can lower your risk of developing type 2 diabetes, heart disease, and other health issues.

"PCOS Means You Can't Get Pregnant"

Addressing fertility concerns and the available treatments that can help

The misconception that PCOS leads to infertility is not valid. PCOS can affect your fertility by hampering ovulation. But, it doesn’t mean that pregnancy is impossible. If you incorporate a healthy diet, the chances of getting pregnant are very high. Regular exercise also plays a crucial role. Stress management is another important factor. These combined efforts can improve your chances of pregnancy, even with lean PCOS. If these lifestyle changes for lean PCOS do not show much result, consult a specialist. You can consult Gynoveda’s fertility experts. They can help you determine the best course of treatment. You will receive personalized guidance throughout the process.

How to Live Well with Lean PCOS

Adopting a Holistic Approach Integrating diet, exercise, stress management, and medical treatments for optimal symptom management

Lean PCOS can be challenging to manage. With a holistic approach, you can improve both the symptoms and your overall health. For instance, maintaining a balanced diet is essential. This diet should be rich in whole grains, lean protein, fruits, and vegetables. Staying physically fit with regular exercises and stress management can also be effective. You can also consider a personalized treatment option. This option may involve medications to regulate hormones. It can also help improve insulin sensitivity.

Regular MonitoringImportance of regular check-ups for hormone levels, insulin sensitivity, and overall health

Following a regular monitoring routine is vital for women with lean PCOS. These sessions allow your doctor to check your hormone levels. They also help track your insulin sensitivity and overall health. By tracking these factors, your doctor can detect other complications. These complications may be related to lean PCOS. Regular check-ups and personalized guidance can also ensure proper PCOS management.

Staying Informed and Seeking Support

Educating yourself and seeking support groups or professional counseling for emotional well-being

PCOS is the most common hormonal condition in women, yet very few know the actual reason behind it. If you seek effective management of lean PCOS, it’s essential to know the condition. By staying informed about the treatment options, you can better manage lean PCOS. You can also make lifestyle changes that help improve your condition. Seeking professional counseling can provide emotional support. This support can also help reduce stress. It can ease your burden and bring relief. They will help you connect with others. These people will understand your experiences.

Conclusion

Summarize the importance of understanding and managing Lean PCOSLean PCOS is a unique condition that affects women with average or low body weight. Many women overlook other symptoms of lean PCOS as the sign of weight gain is absent. So, understanding the condition is crucial for early detection and proper management.

Encourage early diagnosis and a proactive approach to treatment

Diagnosing lean PCOS can be challenging. This is due to the lack of obvious weight-related symptoms. Women with lean PCOS need to take a proactive approach to manage it. Early diagnosis for lean PCOS is important to prevent long-term health implications.

Highlight the need to raise awareness about Lean PCOS among women and healthcare professionals.

Raising awareness about lean PCOS is essential. This awareness needs to reach both women and healthcare professionals. Early diagnosis and proper treatment depend on this knowledge. This will help women to receive timely care and prevent the risk of severe complications.

So, are you ready to start a healthier journey with effective treatments? Book a consultation with Gynoveda’s experts today. Receive personalized lean PCOS treatment. Start your journey to motherhood!

FAQ

Is it possible to be 100% cured of lean PCOS?

There is no such complete cure of lean PCOS. Though it can be manageable through a healthy lifestyle and herbal remedies.

Is it possible to be skinny with PCOS?

Obesity or weight gain is an obvious sign of PCOS. But women with lean PCOS often have an average weight or are even underweight.

Can women with lean PCOS get pregnant naturally?

With Gynoveda’s personalized guidance, women can get pregnant naturally. It can be challenging and time-consuming, but the result will be worth the wait. 

How to increase weight in lean PCOS?

If weight gain in lean PCOS is your concern, you can add plenty of fruits, vegetables, and whole grains to your diet. Also, aim to eat small meals every 3 to 4 hours throughout the day.

Is lean PCOS worse than regular PCOS?

As the obvious PCOS sign, like obesity, is not present in lean PCOS, it can be more challenging to diagnose. Both PCOS are manageable through natural remedies of Gynoveda.

Can lean PCOS be cured?

There is no 100% known cure for PCOS. But you can treat lean PCOS with natural medication and lifestyle modifications.

How did I reverse lean PCOS?

Exercise and a healthy diet can help you control your androgen levels. These habits can also decrease insulin resistance. With effective management, you can reverse lean PCOS completely.

What is the pregnancy rate for lean PCOS?

Almost 52% of women with lean PCOS who underwent fertility treatment got pregnant. This is compared to obese or overweight women.