Male osteoporosis is a loss of bone strength in men that raises the risk of fractures, most often of the spine, hip, and wrist. Its main causes are aging, low testosterone, long-term steroid use, alcohol, smoking, and a range of medical conditions. Risk climbs steeply after age 50 and again after 70, and management combines finding any underlying cause, lifestyle measures, and bone-protecting medication such as bisphosphonates.
Osteoporosis is usually thought of as a women’s disease, so men are screened less often and diagnosed later. In my practice, I often meet older men whose first sign of the condition is a fracture from a simple fall, or a collapsed vertebra discovered on an X-ray taken for something else. This guide explains why it happens, who is at risk, how it is diagnosed, and what can be done.
What Is Male Osteoporosis?
Bone is living tissue that is constantly remodeled. Cells called osteoclasts break down old bone, while osteoblasts lay down new bone. Osteoporosis develops when breakdown outpaces formation for long enough that bones become thin, porous, and fragile.
Men generally build larger, denser bones in early adulthood than women, and they do not go through the abrupt hormonal drop of menopause. That is why osteoporosis appears later in men, typically from the late 60s onward. Once it does, the consequences are just as serious. Men who break a hip tend to have worse outcomes than women of the same age, partly because they are often older and have more coexisting illnesses by the time it happens.
Causes and Risk Factors
Clinicians divide male osteoporosis into two broad groups. Primary osteoporosis is related to aging or has no identifiable cause (sometimes called idiopathic osteoporosis in younger men). Secondary osteoporosis is driven by another condition or medication, and it is far more common in men than in women. Many men with low bone density turn out to have at least one secondary cause.
Common Secondary Causes in Men
- Low testosterone (hypogonadism): testosterone, and the estrogen men make from it, helps maintain bone.
- Androgen deprivation therapy: hormone treatment for prostate cancer lowers testosterone sharply and speeds bone loss.
- Glucocorticoids: long-term prednisone or similar steroids are one of the most important drug causes of bone loss.
- Heavy alcohol use and smoking: both directly impair bone formation.
- Gut and liver disease: celiac disease, inflammatory bowel disease, and chronic liver disease reduce absorption of calcium and vitamin D.
- Endocrine disorders: overactive thyroid, overactive parathyroid glands, and Cushing’s syndrome.
- Blood disorders: multiple myeloma and other marrow conditions can weaken bone from within.
- Other medications: some anticonvulsants and long-term high-dose thyroid hormone.
Non-Modifiable Risk Factors
Age over 50, a family history of osteoporosis or hip fracture, a previous low-trauma fracture, and a slim build all increase risk. A prior fracture is one of the strongest predictors of the next one.
Symptoms of Male Osteoporosis
Osteoporosis itself causes no symptoms until a bone breaks, which is why it is often called a silent disease. Warning signs that bone loss may already be advanced include:
- Loss of height of more than about 4 cm (1.5 inches)
- A stooped or rounded upper back (kyphosis)
- Sudden back pain after lifting, bending, or coughing, suggesting a vertebral compression fracture
- A fracture from a fall at standing height or less
Persistent bone pain without a fracture is not typical of osteoporosis and deserves investigation for other causes.
How Male Osteoporosis Is Diagnosed
Diagnosis starts with a careful history and examination, then a dual-energy X-ray absorptiometry (DEXA) scan of the hip and spine. For men aged 50 and over, results are reported as a T-score, which compares bone density with that of a healthy young adult.
| T-score (men 50+) | Interpretation |
|---|---|
| -1.0 or higher | Normal bone density |
| Between -1.0 and -2.5 | Low bone mass (osteopenia) |
| -2.5 or lower | Osteoporosis |
| -2.5 or lower plus a fragility fracture | Severe (established) osteoporosis |
In men under 50, a Z-score (comparison with men of the same age) is used instead. A low-trauma hip or vertebral fracture can support the diagnosis even when the T-score is not in the osteoporotic range. Many clinicians also use a fracture-risk calculator such as FRAX to estimate 10-year fracture probability.
Because secondary causes are so common in men, blood tests are part of the workup. These typically include calcium, kidney and liver function, vitamin D, testosterone, thyroid function, and a blood count. Where indicated, serum protein electrophoresis screens for myeloma.
Treatment and Management
Management has three layers: correct any underlying cause, strengthen the foundations with lifestyle measures, and use medication when fracture risk is high.
Medications
- Bisphosphonates such as alendronate, risedronate, and zoledronic acid slow bone breakdown and are usually first-line.
- Denosumab, an injection every six months, blocks osteoclast activity. It should not be stopped abruptly without a plan, because bone loss can rebound.
- Anabolic agents such as teriparatide stimulate new bone formation and are generally reserved for severe cases or men with multiple fractures.
- Testosterone replacement may help men with confirmed hypogonadism, but it is not a substitute for osteoporosis medication when fracture risk is high.
Lifestyle Measures
Adequate calcium (around 1,000 mg daily for men up to 70 and 1,200 mg over 70, ideally mostly from food) and vitamin D support any treatment. Weight-bearing and resistance exercise maintain bone and muscle. Cutting back on alcohol, stopping smoking, and reducing fall hazards at home all lower fracture risk.
Complications and Prevention
Untreated osteoporosis leads to repeated fractures. Hip fractures often mean surgery, a long recovery, and loss of independence, and they carry significant mortality in older men. Multiple vertebral fractures cause chronic back pain, height loss, and can reduce lung capacity.
Prevention starts early. Building peak bone mass in youth, staying active, and avoiding tobacco all pay off decades later. Guidelines commonly suggest bone density testing for men aged 70 and over, and for younger men aged 50 to 69 who have risk factors such as steroid use, low testosterone, or a prior fracture.
When to See a Doctor
- You have broken a bone from a minor fall or bump after age 50.
- You have lost noticeable height or developed a stoop.
- You take long-term steroids or are on hormone therapy for prostate cancer.
- You have sudden, severe back pain without a clear injury.
Frequently Asked Questions
At what age should men get a bone density scan?
Many guidelines suggest a DEXA scan at age 70 for all men. Men aged 50 to 69 with risk factors, and any man who has had a low-trauma fracture, should be tested sooner. Your doctor can advise based on your personal risk.
Can male osteoporosis be reversed?
Treatment can increase bone density and substantially reduce fracture risk, though bones rarely return fully to youthful strength. Anabolic drugs rebuild bone, while bisphosphonates and denosumab mainly prevent further loss. Addressing a secondary cause can also allow bone to recover.
Does low testosterone cause osteoporosis?
Low testosterone is one of the most common secondary causes in men. Restoring normal levels can improve bone density in men with true hypogonadism. However, men at high fracture risk usually still need dedicated bone medication.
Are osteoporosis drugs safe for men?
Bisphosphonates, denosumab, and teriparatide are approved for men and are generally well tolerated. Rare side effects include jaw osteonecrosis and unusual thigh fractures with long-term use. Your doctor will weigh these against your fracture risk.
