Male Osteoporosis Is Underdiagnosed: When Men Need DXA and Key Follow-Up Labs

Why Male Bone Loss Is Often Missed Until It’s Too Late

Osteoporosis is not just a women’s problem. Many men lose bone quietly for years, then first learn there is an issue after a wrist, spine, or hip fracture. Recovery can be harder, and the impact on mobility, work, and independence can be long-lasting.

Men are often under-screened for bone loss. They may skip yearly checkups, or bone health is simply not brought up. Back or hip pain is blamed on past sports, work stress, or “just getting older,” and the deeper cause is never checked.

In this article, we want to walk through clear warning signs that should prompt a bone density scan in men, how to think about DXA and REMS results, and which lab tests help fill in the rest of the picture. Men who want a bone health assessment in San Francisco or the South Bay now have access to radiation-free testing that can fit smoothly into their regular care.

Hidden Triggers That Should Prompt a Bone Scan in Men

Some risk factors for male osteoporosis are easy to miss, because they build up over time or are linked to other health issues.

Low testosterone and androgen-deprivation therapy are two of the biggest:

• Longstanding low testosterone or testicular problems  

• Medications that lower androgens for prostate cancer  

• Past treatment that shut down or reduced testosterone production  

Lower androgens speed up bone loss, especially in the first year after treatment changes. Any man with low testosterone, or any man starting or already on androgen-deprivation therapy, should talk with his care team about baseline and follow-up bone density testing.

Long-term steroid use and daily proton pump inhibitors (PPIs) for heartburn also strain bone. Oral steroids like prednisone can:

• Reduce bone formation  

• Thin muscles that protect against falls  

• Affect hormones that keep calcium balanced  

PPIs, when used every day for long periods, may affect calcium absorption and overall bone turnover. Men who are on these medicines for three months or longer should bring up the idea of a bone scan with their provider.

Other red flags include:

• More than two alcoholic drinks per day on a regular basis  

• Bariatric surgery or rapid, unintentional weight loss  

• A past fracture from a minor fall or bump  

• A strong family history of osteoporosis or hip fracture  

• Smoking and chronic illnesses like rheumatoid arthritis or inflammatory bowel disease  

If several of these apply, a bone density scan is often worth discussing, even if there are no symptoms.

Choosing Between DXA and REMS for Men’s Bone Scans

DXA is the traditional test used to measure bone mineral density at the hip and spine. It has been used for many years and is widely available. For men though, there are some special challenges. Arthritis in the spine, disc problems, and aortic calcifications can all make the spine look “denser” than it really is on DXA. Larger body size can also affect image quality and sometimes mask true risk.

REMS, which is an advanced form of bone ultrasound, offers a different approach. It uses radiofrequency ultrasound signals to assess bone density and quality without any ionizing radiation. For men, this can be especially helpful when:

• They are younger or middle-aged and want to track bone health early  

• They are on long-term steroids or androgen-deprivation therapy and need repeat testing  

• They want to avoid cumulative radiation, or already have frequent imaging for other conditions  

Because REMS looks at bone in a different way, it can help clarify risk in cases where DXA is hard to interpret or where artifacts are likely.

For men in the Bay Area, it is now possible to build bone health into routine care by having quick, non-invasive REMS scans done at a dedicated bone clinic, then sharing the results with primary care, endocrinology, or urology so everyone is working from the same information.

Understanding Your DXA or REMS Report as a Man

Once you have a scan, the next step is understanding what the numbers mean. Two terms show up a lot: T-score and Z-score.

• T-score compares your bone density with the average healthy young adult  

• Z-score compares your bone density with people your own age and sex  

For older men, T-scores are often used for diagnosis of osteopenia or osteoporosis, but Z-scores can still offer clues about whether bone is weaker than expected for age. For younger men, Z-scores are often more helpful, because a low value hints that something else may be driving bone loss.

Common traps in male readings include:

• Arthritis, spinal disc disease, or calcified blood vessels that make the spine look falsely strong on DXA  

• Metal hardware or past surgeries that distort certain areas  

• Over-reliance on a single site, like the spine, when the hip or forearm might tell a different story  

In many older men, hip and sometimes forearm measurements give a cleaner view of true bone strength. REMS can assist by helping to identify artifacts and offer another type of measurement that is not affected in the same way.

It also helps to look beyond just one number. Fracture risk tools, such as those that combine clinical history with bone density values, can give a better sense of actual everyday risk. Tracking trends over time, for example, whether density is stable, dropping slowly, or dropping quickly, is just as important as the first score.

Key Follow-up Labs Men Should Request After a Scan

A scan is only one piece of the bone health puzzle. Lab work fills in many of the missing parts.

Core labs that often matter include:

• Serum calcium and albumin, to understand corrected calcium levels  

• 25-hydroxy vitamin D, to check for deficiency or low-normal levels  

• Phosphate and parathyroid hormone (PTH), to look for issues like hyperparathyroidism  

These tests can reveal treatable causes of bone loss, such as low vitamin D or problems with the parathyroid glands that might be pulling calcium out of bone.

Hormone and metabolic testing can be important for men with low bone density:

• Total and free testosterone, often with sex hormone-binding globulin (SHBG)  

• Estradiol, since men convert some testosterone into estrogen that helps keep bones strong  

• Thyroid-stimulating hormone (TSH) and sometimes more thyroid tests if needed  

• Glucose, A1c, kidney, and liver panels when there are signs of metabolic or organ issues  

In some cases, deeper testing is helpful. Bone turnover markers, such as CTX or P1NP, can show how active bone breakdown and formation are. Screening for celiac disease is sometimes suggested in men with digestive symptoms or unexplained osteoporosis. When there are warning signs like anemia, weight loss, or severe back pain, providers may check for conditions such as multiple myeloma.

Pairing this lab work with a thorough bone health assessment in San Francisco or the South Bay allows your care team to connect the dots between numbers, symptoms, and daily life.

Taking Action on Bone Strength Before the Next Fall

Once scan and lab results are in, the goal is to turn them into a clear plan. This often includes:

• Adjusting protein intake and overall nutrition  

• Adding or refining resistance training and weight-bearing exercise  

• Working on balance, leg strength, and fall prevention  

• Discussing supplements, and when prescription medicine might be needed  

Seasonal check-ins can help keep bone health from slipping off the radar. Many men find it easier to start or refresh routines like walking, light jogging, hiking, or strength training when the days are longer and the weather is cooperative. Building steady habits ahead of the wetter months can make falls less likely and help protect the spine and hips.

At Bay Area Bone Scan in Los Gatos, we focus on radiation-free REMS testing and detailed bone health reviews for adults throughout the region. We coordinate closely with primary care and specialists so men can get targeted, proactive support for their bones, instead of waiting until a fracture forces the issue.

Protect Your Mobility With a Personalized Bone Health Plan

If you are ready to understand your fracture risk and take proactive steps, we are here to help. At Bay Area Bone Scan, our specialists use advanced imaging to give you clear, actionable insights about your bones. Schedule your comprehensive bone health assessment in San Francisco today so we can work together on a plan tailored to your age, lifestyle, and medical history. Taking this simple step now can help you stay active and independent for years to come.