Estrogen in Men: What to Know about Estradiol in Males

You've probably heard about estrogen as the primary female sex hormone, but did you know that men produce it too? Understanding estrogen in men is essential to maintaining your health. While testosterone often takes center stage when discussing male hormones, estrogen plays an equally important role in men's bodies. This hormone influences everything from bone density to sexual function, and maintaining the right balance is vital for overall well-being. In this guide, we'll explore what estrogen does in the male body, what healthy levels look like, and what happens when those levels become imbalanced. Whether you're experiencing symptoms or simply want to better understand your hormonal health, this information can help you make informed decisions about your care.

Estrogen in Men

Understanding how estrogen works in the male body can help you make sense of symptoms, lab results, and treatment options. Although it’s often overlooked, estrogen plays an important role in male health and works together with testosterone to support normal body functions.

What Is Estradiol in Men?

Estradiol, often referred to as E2, is the most potent and abundant form of estrogen found in your body. While it's often associated with female reproductive health, estradiol serves several vital functions. It is a steroid hormone in the estrogen family, along with estrone (E1) and estriol (E3). In men, estradiol is primarily produced via aromatization. Testosterone is converted to estradiol by the enzyme aromatase. This conversion occurs in various tissues throughout the body, including fat tissue, the brain, bones, and the testes. The amount of estradiol your body produces depends on several factors, including your age, body composition, and overall health status.

Do Men Have Estrogen?

Yes, men absolutely have estrogen. This is a question many people ask when they first learn about this hormone's presence in the male body. Estrogen isn't exclusively a female hormone. It's a crucial component of male physiology as well. Your body maintains a delicate balance between testosterone and estrogen. While men have significantly higher testosterone levels than women, they still produce and need estrogen to function correctly. The key difference lies in the proportions. Men typically have much lower estrogen levels than women of reproductive age, yet these levels remain essential for optimal health. Think of hormones as members of an orchestra. Each one plays a specific role, and the harmony between them creates the symphony of your body's functions. Too much or too little of any hormone can throw off the entire performance.

Do Men Produce Estrogen?

Men produce estrogen naturally through several mechanisms. The primary pathway involves the conversion of testosterone to estradiol via the aromatase enzyme. Estrogen production in males varies across the body. Your adipose (fat) tissue is a significant site of estrogen production, which is why body composition can affect estrogen levels. The enzyme aromatase is also present in your brain, bones, blood vessels, and skin. Even your testes produce small amounts of estrogen directly. Estrogen production in men increases with age, particularly as testosterone levels decline. Additionally, men with more body fat tend to produce more estrogen because fat tissue contains higher concentrations of aromatase enzyme.

What Does Estrogen Do to Men? The Effects of Estrogen on the Male Body

Estrogens' effects on men encompass numerous vital physiological processes. It goes beyond simple reproduction. Estrogen influences multiple organ systems and bodily functions. Understanding the impact of estrogen on the male body helps explain why maintaining proper levels is so vital for your health. Do men need estrogen? Absolutely. Without adequate estrogen, men would experience significant health problems affecting their bones, brain, heart, and sexual function. Here are some specific ways estrogen supports your body's systems.

Maintains Bone Health and Density

One of estrogen's most critical roles in men is preserving bone strength and density. Your bones are living tissues that constantly undergo remodeling, a process where old bone is broken down, and new bone is formed. Estrogen helps regulate this process by slowing bone resorption (breakdown) while supporting bone formation. Research has shown that men with low estrogen levels have an increased risk of osteoporosis and fractures, even when their testosterone levels are normal. In fact, estrogen may be more important than testosterone for maintaining bone health in men. Your skeletal system needs adequate estrogen throughout your life to maintain structural integrity and prevent fractures as you age.

Supports Cardiovascular Function

Estrogen plays a protective role in your cardiovascular system. It helps maintain healthy cholesterol levels by increasing HDL (good cholesterol) and decreasing LDL (bad cholesterol). The hormone also supports the health of your blood vessel walls, helping them remain flexible and function properly. Studies suggest that appropriate estrogen levels in men are associated with better heart health and may reduce the risk of cardiovascular disease. The hormone affects how your blood vessels respond to various stimuli and helps regulate blood pressure. This cardiovascular support is one reason why hormonal balance is essential for long-term heart health.

Regulates Sexual Function and Libido

While testosterone gets most of the credit for male sexual function, estrogen plays an important supporting role. Your sexual desire, erectile function, and sperm production all require the right balance of both hormones. Estrogen receptors are present in tissues throughout your reproductive system, including the penis and testes. Too little or too much estrogen can interfere with sexual function. Adequate estrogen levels support a healthy libido, while imbalances in either direction can lead to decreased interest in sex and erectile difficulties. The hormone also plays a role in sperm maturation, affecting male fertility.

Influences Brain Function and Mood

Your brain contains estrogen receptors, and the hormone influences various cognitive functions and emotional well-being. Estrogen affects neurotransmitter systems, including those involving serotonin and dopamine, which regulate mood and mental health. Appropriate estrogen levels support cognitive function, including memory and concentration. The hormone also helps protect brain cells from damage and supports overall neurological health. Men with very low estrogen levels may experience mood changes, including increased irritability or depression.

Maintains Healthy Body Composition

Estrogen influences how your body stores and distributes fat. It also affects your metabolism and insulin sensitivity, which, in turn, impacts your overall body composition. The relationship between estrogen and body fat is bidirectional. Estrogen levels affect fat storage, and fat tissue produces estrogen. Estrogen also helps regulate your body's glucose use and influences how efficiently your cells respond to insulin. Proper estrogen balance supports healthy metabolic function, while imbalances can contribute to weight gain and metabolic dysfunction.

Normal Estrogen Levels in Men

Understanding what constitutes healthy estrogen levels in men helps you recognize when something might be off balance. Normal estrogen levels in men are typically measured as estradiol, as this is the most biologically active form of estrogen. In adult men, normal estradiol levels typically range from 10 to 40 picograms per milliliter (pg/mL), although some laboratories use slightly different reference ranges. Normal estradiol levels in males can vary by the laboratory performing the test and the testing method used, so always discuss your results with your healthcare provider in the context of your lab's reference range. It's important to note that 'normal' doesn't necessarily mean 'optimal' for everyone. Some men feel best at the higher or lower end of the normal range. Your ideal estrogen level depends on various factors, including your age, overall health, symptoms, and testosterone levels. The testosterone-to-estradiol ratio is often more important than the absolute levels of either hormone. Estrogen levels in men typically remain relatively stable throughout adulthood, though they may gradually increase with age, particularly as testosterone levels decline and body fat increases. Regular testing can help you and your healthcare provider track changes over time and address imbalances before they cause significant problems.

High Estradiol in Men

High levels of estradiol in men occur when estrogen levels exceed the normal range. While estrogen is essential for male health, too much can cause various problems. Elevated estrogen in men is more common than many people realize and can significantly impact quality of life.

Causes of High Estrogen in Men

Several factors can lead to elevated estrogen levels in men. Understanding what causes estrogen levels in men to rise involves examining both internal and external influences on hormone production.

Increased Aromatase Activity

When the body produces excess aromatase enzyme, more testosterone is converted to estrogen. This can occur naturally with age or due to genetic factors.

Excess Body Fat

Adipose tissue produces estrogen, so carrying extra weight, particularly around your midsection, can significantly increase estrogen production. This creates a problematic cycle where high estrogen promotes fat storage, which in turn produces more estrogen.

Liver Dysfunction

Your liver metabolizes and eliminates excess hormones from your body. When liver function is impaired due to disease, excessive alcohol consumption, or other factors, estrogen can accumulate.

Certain Medications

Some medications can affect hormone levels, including certain antibiotics, antifungals, and medicines used to treat prostate conditions.

Environmental Estrogen Exposure

You may be exposed to xenoestrogens, synthetic compounds that mimic estrogen, through plastics, pesticides, personal care products, and other sources. These endocrine disruptors can interfere with your body's natural hormone balance.

Hypogonadism

When your testes don't produce adequate testosterone, the ratio of estrogen to testosterone can become imbalanced even if absolute estrogen levels aren't extremely high.

Testicular or Adrenal Tumors

Though rare, certain tumors can produce excess estrogen or substances that stimulate estrogen production.

Signs of High Estrogen in Men

Recognizing the signs of high estrogen in men can help you identify potential hormone imbalances earlier and seek appropriate evaluation. High estrogen symptoms in men can vary widely in type and severity, and not everyone will have the same combination of symptoms. In many cases, signs develop gradually and may be mistaken for stress, aging, or lifestyle-related changes.

Gynecomastia

Gynecomastia, or enlargement of breast tissue, is one of the most noticeable signs of elevated estrogen. You may observe swelling, tenderness, or firmness behind the nipples. This change occurs when estrogen’s effects outweigh testosterone’s influence on breast tissue and may affect one or both sides of the chest.

Sexual Dysfunction

High estrogen can interfere with sexual function by disrupting testosterone signaling. You may notice reduced libido, erectile changes, or difficulty maintaining sexual interest. In some cases, fertility may also be affected. These changes often improve when hormonal balance is restored under medical guidance.

Changes in Body Composition

Elevated estrogen can alter how your body stores fat and builds muscle. You may notice increased fat accumulation, especially around the hips, thighs, chest, or abdomen. At the same time, high estrogen may make it harder to gain or maintain muscle mass, even with regular exercise.

Emotional Changes

Mood-related symptoms are common but often overlooked. High estrogen may contribute to mood swings, increased emotional sensitivity, anxiety, or depressive symptoms. These changes may be subtle at first and may be attributed to life stress rather than a hormonal imbalance.

Fatigue

Ongoing fatigue or low energy that does not improve with adequate rest may indicate a hormonal imbalance. Elevated estrogen levels may affect sleep quality, metabolism, and motivation, leading to persistent daytime tiredness.

Water Retention and Bloating

Excess estrogen can cause your body to retain fluid, leading to bloating and puffiness. You may notice swelling in the face, hands, ankles, or feet, as well as a general feeling of heaviness or tightness that fluctuates throughout the day. For men undergoing testosterone replacement therapy (TRT), patients should watch for all of the above symptoms, which can occur when testosterone is converted to excessive amounts of estradiol. Healthcare providers often monitor for high E2 symptoms in male TRT patients and may adjust treatment protocols or add medications to manage conversion if levels become too high.

Low Estradiol in Men

Low estradiol in men is less commonly discussed than high levels, but it can be equally problematic for your health. When estrogen levels fall below the normal range, various body systems can be affected. Low estrogen symptoms in men deserve attention because this condition can significantly impact your quality of life and long-term health outcomes.

Causes of Low Estrogen in Men

Several factors can result in insufficient estrogen production in men. In many cases, low estrogen does not occur in isolation but reflects broader hormonal or metabolic changes in the body.

Low Testosterone Levels

Since most estrogen in men comes from the conversion of testosterone into estradiol, low testosterone levels often lead directly to low estrogen. Conditions such as hypogonadism, aging-related hormone decline, and certain medical treatments can reduce testosterone production, leaving less hormone available to convert into estrogen. As a result, estrogen levels may fall below what your body needs for bone, mood, and metabolic support.

Aromatase Inhibitor Use

Some men use aromatase inhibitors to limit how much testosterone converts into estrogen, particularly during TRT. While this approach can be helpful in specific situations, excessive or unnecessary use may suppress estrogen too much. Over time, this can increase the risk of joint discomfort, low mood, fatigue, and bone density loss if estrogen remains too low.

Genetic Conditions

Rare genetic variations can affect how well the aromatase enzyme functions. When aromatase activity is reduced or absent, the body cannot efficiently convert testosterone into estrogen. People with these genetic conditions may experience very low or undetectable estrogen levels and often require specialized medical management to maintain bone and metabolic health.

Chronic Illness

Certain chronic illnesses can interfere with hormone production, regulation, or metabolism. Long-term inflammatory conditions, kidney disease, liver disease, or poorly controlled endocrine disorders may disrupt the normal hormone feedback loops that help maintain healthy estrogen levels. In these cases, low estrogen may be part of a broader hormonal imbalance.

Malnutrition and Extremely Low Body Fat

While excess body fat can increase estrogen production, very low body fat can have the opposite effect. Highly restrictive diets, eating disorders, or intense physical training without adequate nutrition may reduce the body’s ability to convert testosterone into estrogen. Over time, this can contribute to unhealthy estrogen deficiency and related symptoms.

Signs of Low Estrogen in Men

The symptoms of low estrogen in men can be subtle at first but become more apparent over time.

Bone Problems

Weak or fragile bones, increased fracture risk, and osteoporosis can develop when estrogen levels are insufficient. You might experience more frequent bone or joint pain.

Sexual Dysfunction

Low estrogen can cause decreased libido, erectile dysfunction, and reduced fertility, similar to what happens with low testosterone.

Mood and Cognitive Issues

You may experience depression, mood instability, difficulty concentrating, or memory problems.

Joint Pain and Stiffness

Estrogen supports joint health, and low levels can contribute to increased joint discomfort.

Hot Flashes

While more commonly associated with women going through menopause, men with very low estrogen can also experience hot flashes and night sweats.

Fatigue

Persistent fatigue and low energy can accompany low estrogen levels.

Abdominal Weight Gain

Paradoxically, both high and low estrogen can contribute to increased abdominal fat, as hormonal balance is key to healthy body composition. The connection between low testosterone and estrogen is significant. Addressing one often requires addressing the other. Be sure to address all of your symptoms with your healthcare provider.

How to Regulate Estradiol Levels in Men

If you're experiencing symptoms of estrogen imbalance, several strategies can help restore healthy hormone levels. Always work with a qualified healthcare provider before starting any treatment plan, as individual needs vary considerably.

Maintain a Healthy Body Weight

Since fat tissue produces estrogen through aromatase activity, managing your body weight is one of the most effective ways to regulate estrogen levels. If you're carrying excess weight, particularly around your midsection, losing fat can help reduce estrogen production. Focus on sustainable lifestyle changes rather than extreme diets. Combine regular physical activity with nutritious eating habits that support your overall health. Strength training is particularly beneficial, as building muscle mass can improve your metabolism and help maintain healthy hormone balance.

Optimize Liver Function

Your liver processes and eliminates excess hormones, including estrogen. Supporting liver health helps your body maintain proper hormone balance. Limit alcohol consumption, as excessive drinking impairs liver function and can increase estrogen levels. Eat plenty of cruciferous vegetables like broccoli, cauliflower, and Brussels sprouts, which contain compounds that support healthy estrogen metabolism. Stay well hydrated, limit processed foods, and consult a healthcare provider if you have any underlying liver conditions.

Choose Food and Lifestyle Wisely

Certain dietary choices influence hormone levels. A diet rich in fiber helps your body eliminate excess estrogen through digestive processes. Include plenty of whole grains, vegetables, fruits, legumes, and seeds in your meals. Minimize exposure to endocrine disruptors by choosing organic produce when possible, avoiding plastic food storage containers (especially for heating), and selecting personal care products free of parabens and phthalates.

Manage Stress Effectively

Chronic stress affects your entire hormonal system. Elevated cortisol levels from prolonged stress can impair testosterone production and overall hormone balance. Incorporate stress-management techniques into your daily routine, such as regular exercise, adequate sleep, meditation, or other relaxing activities. Aim for seven to nine hours of quality sleep each night, as sleep deprivation disrupts hormone production and regulation. Establish a consistent sleep schedule and create a bedroom environment conducive to restful sleep.

Exercise Regularly

Regular physical activity supports healthy hormone balance through multiple mechanisms. Exercise helps maintain a healthy body weight, reduces stress, improves insulin sensitivity, and supports overall metabolic health. Include both cardiovascular exercise and strength training in your routine. Resistance training is particularly beneficial for maintaining testosterone levels and building muscle mass. Aim for at least 150 minutes of moderate-intensity exercise or 75 minutes of vigorous-intensity exercise weekly, plus strength training exercises at least twice per week.

Consider Medical Treatment When Appropriate

If diet and lifestyle changes aren't enough to balance your hormones, your healthcare provider may suggest medical treatment.

For High Estrogen

Your doctor might prescribe medications like aromatase inhibitors or selective estrogen receptor modulators (SERMs) (drugs that affect how estrogen works in your body). These medications need close monitoring by your healthcare provider.

For Low Estrogen

The first step is usually to treat low testosterone, since testosterone is converted to estrogen in the body. Some men may benefit from testosterone replacement therapy, but this requires regular check-ins to make sure estrogen levels stay healthy, too. Regular hormone testing helps you and your healthcare provider track your levels and adjust treatment as needed. Never self-prescribe hormone medications or supplements without professional guidance, as improper use can create more problems than it solves.

Frequently Asked Questions

 

Why do men need estrogen?

Men need estrogen for numerous vital functions, including maintaining bone density, supporting cardiovascular health, regulating sexual function, preserving cognitive abilities, and maintaining healthy body composition. Without adequate estrogen, men would experience increased fracture risk, sexual dysfunction, and various other health problems despite having normal testosterone levels.

Where is estrogen produced in males?

In males, estrogen is primarily produced by the aromatase enzyme, converting testosterone. This conversion happens in multiple tissues, including adipose (fat) tissue, the brain, bones, blood vessels, skin, and testes. Fat tissue is a particularly significant site of estrogen production, which explains why body composition affects estrogen levels in men.

Are high estradiol levels in men bad for men?

Yes, high estradiol levels can cause several problems, including gynecomastia (breast tissue enlargement), sexual dysfunction, emotional changes, fatigue, water retention, and difficulty maintaining healthy body composition. Elevated estrogen can also interfere with testosterone's normal functions and contribute to long-term health issues if left unaddressed, making a proper balance essential.

Can estrogen cause diarrhea?

Estrogen can influence digestive function through its effects on gut motility and the gut-brain axis. While not a primary symptom, some men with hormone imbalances report digestive changes, including diarrhea or constipation. However, persistent digestive symptoms warrant evaluation for causes beyond hormonal factors.

Does high estrogen in men cause belly fat?

Yes, elevated estrogen levels can contribute to increased abdominal fat storage. High estrogen promotes fat accumulation, particularly around the midsection, and can make weight loss more difficult. This creates a problematic cycle since fat tissue produces additional estrogen. Interestingly, very low estrogen levels can also negatively affect body composition, underscoring the importance of balance.

How does estrogen affect men's bowels?

Estrogen influences digestive motility and function through receptors in the gastrointestinal tract. The hormone affects how quickly food moves through your digestive system, gut sensitivity, and the gut-brain connection. Both high and low estrogen levels can alter bowel patterns, though individual responses vary, and other factors often play a larger role in digestive health. There is no substantial evidence that everyday foods dramatically raise estrogen levels in men. However, research suggests that limiting excessive intake of certain foods may support healthier estrogen metabolism. Foods commonly discussed include alcohol, ultra-processed foods, high-sugar foods, excessive saturated fat, and large amounts of highly processed soy products. Overall diet quality and moderation matter far more than avoiding any single food.

What are five estrogen foods to avoid?

While no foods should be avoided entirely without a medical reason, limiting excessive consumption of soy products (tofu, edamame, soy milk), flaxseeds, alcohol, non-organic dairy products, and processed foods containing additives may help manage estrogen levels. However, moderate consumption of these foods is generally acceptable, and overall diet quality matters more than avoiding specific items.

What organ does estrogen affect in men?

Estrogen affects multiple organs, including bones (to maintain bone density), the brain (to support cognitive function and mood), the cardiovascular system (to protect the heart and blood vessels), reproductive organs (to influence sexual function), the liver (to affect metabolism), and adipose tissue (to regulate fat storage). The widespread distribution of estrogen receptors throughout the male body demonstrates the importance of this hormone.

What's the connection between low T and estrogen?

Testosterone and estrogen are closely linked. Because most estrogen in men is made from testosterone, low testosterone (low T) often leads to low estrogen as well; however, balance matters. You can have low testosterone but relatively high estrogen, which may cause symptoms and require addressing both hormone imbalances together.

Managing Your Hormone Health

Understanding estrogen's role in male health helps you to recognize imbalances and seek appropriate care. If you need medications to support your hormonal health, ScriptSave® WellRx can help make treatment more affordable. Our prescription savings program offers up to 80% savings* on many medications, allowing you access to the care you need without breaking the bank. Whether you're managing hormone imbalances or other health conditions, visit WellRx.com to search for your medications and find discounts at pharmacies near you. Simply show your ScriptSave WellRx card at the pharmacy counter to access savings. We've been helping people save on their prescriptions for 25 years, and we're here to help you, too. *DISCOUNT ONLY – NOT INSURANCE. The program is administered by Medical Security Card Company, LLC.

 

Alyse Thompson, M.D., is a freelance medical writer with experience caring for patients in primary and urgent care settings. She also has a master's degree in basic medical science. She has managed acute and chronic diseases and participated in medical and pharmaceutical research.

References

https://www.ncbi.nlm.nih.gov/books/NBK549797/

https://my.clevelandclinic.org/health/body/22353-estrogen

https://my.clevelandclinic.org/health/articles/24101-testosterone

https://www.ncbi.nlm.nih.gov/books/NBK278933/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4854098/

https://my.clevelandclinic.org/health/body/22353-estrogen

https://my.clevelandclinic.org/health/articles/22572-serotonin

https://my.clevelandclinic.org/health/articles/22581-dopamine

https://my.clevelandclinic.org/health/diseases/22363-high-estrogen

https://pmc.ncbi.nlm.nih.gov/articles/PMC8395949/

https://my.clevelandclinic.org/health/treatments/testosterone-replacement-therapy-trt

https://www.ncbi.nlm.nih.gov/books/NBK279105/

https://medlineplus.gov/ency/article/001195.htm

https://www.ncbi.nlm.nih.gov/books/NBK557856/

https://my.clevelandclinic.org/health/articles/22187-cortisol

https://my.clevelandclinic.org/health/treatments/24732-selective-estrogen-receptor-modulators-serm

https://www.health.com/foods-high-in-estrogen-to-avoid-11757733

https://my.clevelandclinic.org/health/diseases/15603-low-testosterone-male-hypogonadism