Gynecomastia (Male Chest) | 2. Causes and risk factors — Part 2

Gynecomastia usually reflects an imbalance between estrogen, which stimulates breast tissue growth, and testosterone, which limits it. Exogenous testosterone injections can suppress natural testosterone production, and estrogen may predominate between cycles, which is one mechanism by which androgen use can be associated with gynecomastia. In elderly men, drug therapy such as testosterone should be considered and, when appropriate, eliminated because it may affect reversing the condition. Conversely, testosterone replacement can treat gynecomastia in older males with low testosterone levels. Medications that increase testosterone are one possible treatment option, but a doctor must decide suitability. Many cases are harmless and may not need treatment.

Anabolic steroids can disrupt the balance between testosterone and estrogen, and some over-the-counter supplements may contain hormones with a similar effect. Gynecomastia most often reflects an estrogen-testosterone imbalance, and medicines or substances can contribute. In bodybuilders, enlargement is often glandular and fibrotic rather than fatty, and it may persist even after stopping the offending agent. Because liposuction is less effective for this firm tissue, direct gland excision is often needed. Stopping a suspected supplement or drug may help, but long-standing glandular tissue is less likely to resolve. A clinician may review medicines, hormones and other causes before deciding treatment. Protein supplements themselves do not increase or decrease gynecomastia.

In alcoholic liver disease, the liver may metabolise estrogen less effectively, and ethanol may directly disrupt testosterone synthesis. Phytoestrogens in some alcoholic drinks may also shift the estrogen-to-testosterone balance. Chronic alcohol use is also associated with a higher likelihood of gynecomastia. However, gynecomastia most often has no single obvious cause, and medicines, thyroid, kidney or liver conditions can also be involved. A careful history and examination help identify reversible causes before considering surgery. Hormone blood tests are used only when other symptoms of hormonal imbalance are present, and imaging may be added when needed. Dr. Vishal Purohit can explain relevant procedure options, suitability, benefits and limitations during consultation.

Gynecomastia means abnormal growth of male breast tissue, not chest enlargement from fat alone. Marijuana is listed among substances that may be associated with it, alongside alcohol, amphetamines, heroin and methadone. The underlying issue is usually an imbalance between estrogen and testosterone, and other causes include medicines, anabolic steroids, excess weight, thyroid, kidney or liver disease. It is often harmless and may not need treatment. Because several causes overlap, a clinician may review medicines, health conditions and substance use before deciding whether observation, treating a cause or surgery is appropriate. Stopping marijuana may help in some cases, but persistent or bothersome gynecomastia still needs evaluation.

Gynecomastia in men means enlarged male breast tissue. It can arise from hormone imbalance, obesity, medicines, health conditions, or substances such as alcohol, marijuana, amphetamines, heroin, methadone and anabolic steroids. Smoking is not named as a cause. Yet smoking and nicotine are repeatedly linked to surgical risk: advice includes stopping smoking before gynecomastia surgery, with some guidance advising at least six weeks before and after, because tobacco can cause severe wound-healing problems and infection. Quitting four to six weeks before surgery and staying smoke-free four weeks after may reduce wound complications by 50%. This is a surgical-safety issue, not evidence that smoking creates breast tissue. It does not mean smoking causes growth.

Medicines may cause gynecomastia by increasing estrogen levels, mimicking estrogen, lowering testosterone or other androgens, blocking androgen receptors, increasing prolactin, or through unidentified means. Examples include spironolactone, cimetidine, digoxin, diazepam, finasteride or dutasteride, HIV medicines, cancer chemotherapy, opioids, some antidepressants, antifungals, heart medicines, and anabolic steroids. Medications are responsible for 10% to 20% of cases in postadolescent adults. Some cases improve after the trigger is removed, while long-standing gynecomastia is less likely to resolve. Not all breast enlargement is caused by medicines. Stopping or changing a medicine may help, but do not stop prescribed medicines without talking to your doctor.

Gynecomastia is enlarged male breast tissue, often linked to an imbalance between estrogen and testosterone. Males normally have both hormones, and changes in their balance can stimulate breast tissue growth. MedlinePlus lists treatment for hair loss with finasteride (Propecia) among medicines that can cause breast growth, and Guyuron lists 5-alpha reductase inhibitors among associated agents. Other possible causes include normal hormone changes, obesity, other medicines, and conditions such as thyroid, kidney, or liver disease. A clinician can also check whether the enlargement is breast tissue rather than fat. If you suspect a medicine is involved, do not stop it on your own; a clinician can review the cause and whether a change is appropriate.

Finasteride lowers dihydrotestosterone, a male hormone, and reduced androgen levels have been linked to gynecomastia. A meta-analysis of 14 studies in men treated for benign prostate enlargement found a significantly increased risk of breast tenderness and gynecomastia, though not necessarily breast cancer. Gynecomastia can also arise from hormone imbalance, excess weight, other medicines or medical conditions, so a clinician should assess the cause rather than assuming finasteride alone. It is a benign increase in glandular tissue, not just fat, and one or both breasts may be affected. If you notice breast changes while taking finasteride, discuss them with your prescribing doctor before stopping.

Gynecomastia is enlarged male breast tissue, usually from an imbalance between estrogen (female hormone) and testosterone (male hormone); certain medicines and conditions can also cause it. The listed stomach medicines include acid-reducing H2 blockers and proton pump inhibitors, plus prokinetics and misoprostol. Other sources also name heartburn or ulcer medicines such as cimetidine and proton pump inhibitors. Because many causes exist, including hormones, weight, liver or kidney disease, and other drugs, a clinician should review your medicines and symptoms rather than assuming one drug is responsible. A clinician may examine you first and use imaging or hormone tests only when needed.

It usually reflects an imbalance between male and female hormones; certain medicines can contribute. Tricyclic antidepressants are listed among associated drugs, and SSRI/SNRI antidepressants appear in one pharmacologic table with fair evidence. Other possible causes include hormonal changes, obesity, thyroid, kidney or liver disease, and anabolic steroids. If a medicine is contributing, stopping or changing it under medical supervision often leads to regression within about three months. Not every case needs treatment; gynecomastia is often harmless. One or both breasts may be affected. A clinician should review your medicines and health before any change. Gynecomastia can cause emotional discomfort, but it does not automatically mean surgery is needed.

Gynecomastia is enlarged male breast tissue, usually from a testosterone-estrogen imbalance. Medicines can contribute; diazepam is listed among benzodiazepines, and tables also list phenothiazines and tricyclic antidepressants. One source describes diazepam as having estrogenic properties and increasing sex hormone-binding globulin. Evidence strength varies by agent. It can affect one or both breasts. If a medicine is implicated, stopping it often leads breast tissue to regress within three months, but any change must be guided by the prescribing clinician. Other medicines and substances may also be associated, and the exact mechanism is not always clear. A careful review of symptoms, medicines, and health history helps identify possible contributors before deciding on treatment. Persistent or worrying changes deserve medical review.

MedlinePlus lists heart medicines such as spironolactone, digoxin, amiodarone and calcium-channel blockers among drugs that can cause breast growth in men. A gynecomastia review also lists cardiovascular agents including spironolactone, several calcium-channel blockers, ACE inhibitors, anti-arrhythmics, digoxin, furosemide, methyldopa and reserpine. Spironolactone is specifically noted to cause gynecomastia, which is why amiloride may be considered as an alternative in resistant hypertension. Not every blood-pressure medicine carries the same risk, and the strength of association varies. MedlinePlus also advises not stopping medicines before talking with your provider. Some listed associations have limited or poor-quality evidence. Your prescribing clinician can review your medicines and symptoms.

Medications can cause gynecomastia by increasing estrogen, mimicking estrogen, lowering testosterone or other androgens, blocking androgen receptors, increasing prolactin, or through unidentified means. Hormone imbalance between estrogen and testosterone is the usual mechanism, and some medicines act through several of these pathways. Gonadotropins are specifically noted as agents that can result in clinically significant gynecomastia. Common contributors include antipsychotics, antiretrovirals, prostate cancer therapies, and spironolactone, which has a high propensity to cause it. Discontinuing the contributing agent often leads to regression of breast tissue within three months. Gynecomastia is often harmless and may not need treatment, but persistent or bothersome changes should be assessed by a clinician.

Gynecomastia is usually driven by an altered estrogen-to-androgen balance that stimulates glandular breast tissue. Physiologic forms are common in newborns, adolescents and older men, while nonphysiologic forms may follow medications, chronic disease, substance use or tumors. In about 25% of cases the precise cause remains idiopathic, and long-standing gynecomastia may make further laboratory investigation noncontributory. Hormone changes during puberty, after age 50, pregnancy hormones in newborns, overweight, certain medicines, thyroid, kidney or liver disease, and anabolic steroids are also recognized causes. Distinguishing true glandular enlargement from fat-related pseudogynecomastia also matters when assessing cause. Many cases are harmless and may resolve without treatment, especially pubertal cases.