Gynecomastia, commonly called “gyno,” is enlarged breast tissue in males caused by a hormonal imbalance between estrogen and testosterone. What you can do about it depends on whether you have true glandular tissue growth or just excess chest fat, how long you’ve had it, and how severe it is. Your options range from medication that can shrink the tissue in early stages to surgery that removes it permanently.
First: Figure Out What You’re Dealing With
Not all puffy or enlarged chests are gynecomastia. There are two distinct conditions that look similar but respond to very different treatments.
True gynecomastia involves actual glandular breast tissue growing beneath and around the nipple. You can often feel it as a firm, rubbery disc directly behind the areola. This tissue develops because estrogen levels are too high relative to testosterone, or because testosterone’s ability to counteract breast growth is weakened. Estrogen drives ductal growth in breast tissue, while testosterone normally suppresses it. When that balance tips, the tissue proliferates.
Pseudogynecomastia is simply excess fat stored in the chest area. It feels softer and more diffuse than the firm disc of glandular tissue. The critical difference: pseudogynecomastia can improve with weight loss and exercise. True gynecomastia cannot. No amount of bench pressing or calorie cutting will shrink glandular tissue. Exercise can reduce surrounding fat and shape the pectoral muscles, but the gland itself stays put.
If you’re unsure which you have, a doctor can distinguish between the two with a physical exam. In cases where the cause isn’t obvious, bloodwork typically includes estrogen, total and free testosterone, liver and kidney function, thyroid hormones, LH, FSH, and prolactin. These help identify whether something specific is driving the imbalance.
Common Causes Worth Ruling Out
Before jumping to treatment, it’s worth understanding why gyno develops, because sometimes the fix is as simple as stopping a medication or addressing an underlying condition.
Hormonal shifts during puberty are the most common trigger. Estrogen spikes temporarily, and up to 70% of adolescent boys develop some degree of breast tissue. In most cases, it resolves on its own within one to two years. Adult gynecomastia is a different story and tends to persist without intervention.
Medications are a well-documented cause. Spironolactone (a blood pressure and acne drug) is one of the most strongly linked, and the effect appears to be dose-dependent. Other common culprits include finasteride (used for hair loss), certain calcium channel blockers like amlodipine and nifedipine, the acid reflux drug cimetidine, some antidepressants like fluoxetine and paroxetine, anti-seizure medications like gabapentin and pregabalin, and several HIV treatments. If your gyno appeared after starting a new medication, that connection is worth discussing with your prescriber.
Anabolic steroid use is another frequent cause. The body converts excess testosterone into estrogen through an enzyme called aromatase. Flooding the system with exogenous testosterone provides more raw material for that conversion, which can spike estrogen levels and trigger breast growth. This is why gyno is so common in bodybuilding circles, even among people who look otherwise lean.
Liver disease, kidney disease, thyroid disorders, and certain tumors can also shift the hormonal balance toward estrogen dominance. This is why bloodwork matters when the cause isn’t immediately clear.
Medication: What Works and When
If your gynecomastia is relatively recent (generally within the first year or so of onset), medication can be effective at reducing or resolving it. The tissue is still in an active, proliferative phase during this window, which makes it more responsive to hormonal treatment. Once the tissue becomes fibrotic and scarred, typically after 12 months or longer, medication is far less likely to help.
The most studied medications are selective estrogen receptor modulators, or SERMs. These block estrogen from binding to receptors in breast tissue. Tamoxifen produced significant breast size reduction in 74% to 95% of patients across multiple studies, with 41% to 77.5% of patients seeing at least a 50% reduction. Raloxifene showed even more consistent results, with 86% to 93% of patients achieving at least 50% reduction. Both are generally well-tolerated with few serious side effects.
Results typically become noticeable after three to four months of treatment, and a full course usually lasts up to six months. Long-term follow-up studies, some extending to seven years for tamoxifen and three years for raloxifene, found low recurrence rates. These medications require a prescription and are used off-label for gynecomastia, so you’ll need a doctor willing to prescribe them for this purpose.
Surgery: The Permanent Solution
For gynecomastia that has been present for over a year, is moderate to severe, or hasn’t responded to medication, surgery is the most reliable option. It’s also the only option for removing long-standing fibrotic glandular tissue.
There are two main surgical approaches, often combined. Liposuction removes excess fat from the chest but leaves glandular tissue behind. For men whose enlargement is mostly fatty, liposuction alone can produce good results. For true gynecomastia with a significant glandular component, liposuction combined with direct excision of the gland through a small incision around the areola is the standard approach. The surgeon separates the glandular tissue from the skin above and the chest muscle below, then removes it. More severe cases with significant skin excess may require larger incisions and skin removal.
The average surgeon’s fee for gynecomastia surgery is $5,587, according to the American Society of Plastic Surgeons. That number covers only the surgeon’s time. When you add anesthesia, facility fees, compression garments, and follow-up care, total costs typically range from $7,000 to $12,000 or more depending on your location and the complexity of the procedure. Insurance occasionally covers gynecomastia surgery when it’s deemed medically necessary, but most cases are classified as cosmetic.
What Recovery From Surgery Looks Like
The first week is rest only. You’ll wear a compression garment and can do gentle walking around the house to keep blood flowing, but nothing that engages the chest, arms, or core. No lifting, pushing, or pulling.
By weeks two and three, most people can handle slow treadmill walking or light stationary cycling, keeping the heart rate moderate. Upper body work is still off limits. Weeks four and five open the door to lower body exercises like bodyweight squats and light machine work, as long as nothing strains the chest.
The six-to-eight-week mark is when controlled upper body training resumes, starting with light weights and careful form. Chest-specific exercises like bench press and push-ups come back last, introduced gradually. Many people return to desk jobs within a week, while physically demanding jobs may require three to four weeks off. Full return to aggressive training typically takes two months or longer.
What You Can Do Right Now
If you’re just noticing gyno developing, time matters. The sooner you act, the more options you have. Start by getting a proper evaluation to confirm it’s glandular tissue and not just chest fat. If it’s recent onset, medication has a strong track record. If it’s been there for years, surgery is the most realistic path to a flat chest.
Review your medications and supplements. If you’re taking anything on the list of known offenders, especially spironolactone, finasteride, or certain anti-anxiety and acid reflux drugs, a switch to an alternative may halt progression or allow some reversal. If anabolic steroids are involved, stopping use is the obvious first step, though the tissue may not fully resolve on its own.
For pseudogynecomastia, a consistent caloric deficit combined with strength training that builds the pectoral muscles can meaningfully improve chest appearance. Losing overall body fat is the goal, since you can’t spot-reduce chest fat specifically. But if you’ve already gotten lean and still have noticeable tissue behind the nipple, that’s glandular, and diet won’t fix it.