The 60-Second Answer

A DEXA scan is a quick, painless test that uses very low dose X-rays to measure bone strength. It can find bone loss and osteoporosis before a fracture happens. Menopausal women should usually get one at age 65, or earlier if they have risk factors such as early menopause, low body weight, steroid use, or previous fractures. Ask your doctor when.

DEXA Measures Menopause Bone Density

A DEXA scan, also called a DXA scan, is the preferred bone density test for measuring bone strength. DEXA stands for dual-energy X-ray absorptiometry. It uses two low-dose X-ray beams to measure bone density, primarily at the hip and lumbar spine.

The density measurement estimates the amount of bone mineral packed into a specific area. Unlike a standard X-ray, which may not show decreased bone until substantial loss of bone has occurred, this screening test can identify low bone density much earlier.

During the scan, you lie fully clothed on a padded table while a scanning arm moves above you. The procedure generally takes 10 to 30 minutes, requires no injections, and should not hurt. Results can support a diagnosis of osteoporosis, estimate the risk of fractures, and guide decisions about lifestyle changes, hormone therapy, or osteoporosis medication.

Although people sometimes call it a bone scan, DEXA is different from a nuclear medicine bone scan used to investigate infection, cancer, or unexplained bone pain.

Menopause Accelerates Bone Loss

Bone is living tissue that is continuously renewed. Osteoclasts remove old bone, while osteoblasts create new bone tissue. During youth, the body usually makes enough new bone to replace what is removed and eventually reaches peak bone mass.

Estrogen plays a key role in maintaining this balance through hormone receptors on bone and immune cells. When a woman reaches menopause, declining ovarian estrogen changes signals such as RANKL, which regulates osteoclast activity. Old bone begins to break down faster than osteoblasts can build bone.

This metabolic shift means women may lose bone rapidly during the menopause transition. The increased removal of bone, combined with insufficient formation of new bone, can lead to osteoporosis in postmenopausal women.

Progesterone may influence bone-forming cells, but declining estrogen is the principal hormone change associated with accelerated bone loss. Genetics, nutrition, exercise, smoking, low body weight, medications, and peak bone mass affect how much bone strength remains after menopause.

This process is usually silent. A Wise Woman can feel completely well while experiencing low bone mass and an increasing risk of bone fracture.

Screening Before Age 65 Finds Risk

The 2025 U.S. Preventive Services Task Force recommends screening for osteoporosis in all women at age 65 and in younger postmenopausal women whose clinical risk is elevated. A DEXA scan for menopause bone density may therefore be recommended for women below age 65 when a risk assessment suggests a higher chance of developing osteoporosis.

Primary care clinicians should consider earlier bone density screening when the following risk factors for bone loss are present:

• A fracture after age 50 caused by a minor fall
• Menopause before age 45
• Surgical removal of both ovaries
• Low body weight or significant unplanned weight loss
• A parental hip fracture or family history of osteoporosis
• Long-term corticosteroid treatment
• Smoking or excessive alcohol consumption
• Rheumatoid arthritis, malabsorption, or thyroid disease
• Significant height loss or unexplained spinal pain
• Treatments for breast cancer or ovarian cancer that reduce estrogen

Women with several risk factors for osteoporosis may benefit from FRAX or another validated assessment tool. These tools estimate the risk of bone fracture by considering age, medical history, smoking, alcohol use, previous fractures, and other factors.

Women age 50 and older should not assume that every person needs immediate testing. Bone mineral density tests are most useful when the result could influence treatment or prevention decisions.

T Scores Classify Bone Density

For postmenopausal women and men age 50 and older, the T-score compares your bone density with the average peak bone mass of a healthy young adult.

T-Score	Bone Density Category	Clinical Meaning	Usual Response
−1.0 or higher	Normal bone density	Bone mass is within the expected healthy range	Continue prevention
Below −1.0 to above −2.5	Osteopenia	Low bone mass is present	Assess fracture risk and possible causes
−2.5 or lower	Osteoporosis	Result meets the diagnostic threshold	Discuss treatment options
−2.5 or lower with a fragility fracture	Severe osteoporosis	Risk of fractures is especially high	Prompt treatment is usually required

A T-score alone does not provide a complete diagnosis of osteoporosis. Previous fractures, falls, medications, spinal abnormalities, and other health conditions can alter the risk of bone injury.

For younger women who have not reached menopause, clinicians generally use a Z-score. This compares bone mineral density with that of people of the same age and sex rather than with young adult peak bone mass.

A Bone Health Protocol Reduces Risk

Use these steps with guidance from your healthcare professional:

1. Request a bone health review during menopause, especially after age 50 or following an early menopause, fragility fracture, major weight loss, or long-term steroid treatment.
2. Aim for 1,200 mg of calcium daily after age 50, preferably through food. To get enough calcium, count food sources before adding supplements.
3. Discuss calcium and vitamin D needs with your clinician. Vitamin D dosage should reflect your blood level, diet, sun exposure, medications, and medical history.
4. Perform progressive resistance exercise at least twice weekly to build bone and muscle.
5. Add regular weight-bearing activity, such as brisk walking, dancing, or stair climbing, plus balance exercises.
6. Avoid smoking, limit alcohol, eat adequate protein, and review medications that may prevent bone formation or increase the risk of bone loss.
7. Discuss hormone replacement therapy or osteoporosis medication when clinically appropriate. Lifestyle measures can prevent bone loss, but they may not be sufficient to treat established osteoporosis or greatly improve bone density alone.

Consistent Scans Improve Bone Tracking

An expert detail often missing from general advice is that follow-up scans should ideally be performed on the same machine at the same facility. Different machines, positioning techniques, and analysis software can produce small differences that do not represent a true change in bone mass.

Ask for your actual hip and spine measurements, not only the diagnostic label. A small change may fall within the machine’s expected measurement error.

In December 2025, the FDA qualified total hip bone mineral density measured by DXA as a surrogate endpoint for certain osteoporosis drug trials. This supports standardized hip monitoring, but it does not mean every small increase will automatically reduce an individual woman’s risk of bone fracture.

Frequently Asked Questions

What Is A Good T Score In Your 50s?

A T-score of −1.0 or higher represents normal bone density. A result between −1.0 and −2.5 indicates osteopenia, while −2.5 or lower may diagnose osteoporosis. Your medical history and fracture risk remain important.

How Do I Read A DEXA Scan For Osteopenia?

Review the T-scores for the lumbar spine, total hip, and femoral neck. Osteopenia means the lowest relevant score is below −1.0 but above −2.5. Your primary care clinician can combine this result with FRAX and other risk factors.

When Is A First Perimenopause Test Due?

Routine testing is not required for every woman during perimenopause. A bone density scan may be appropriate before age 65 when early menopause, low body weight, a fracture, steroid use, or other risk factors are present. Screening should begin when the result could change your care.

Will Insurance Cover A Symptom Free DEXA?

Coverage depends on age, documented risk factors, location, and insurance policy. In the United States, many plans cover screening recommended by the Preventive Services Task Force, while Medicare generally covers eligible bone mass measurements every 24 months. Confirm coverage before scheduling the test.

Is DEXA Painful Or High Radiation?

DEXA is noninvasive and should not cause pain. Its low-dose radiation exposure is generally about 1 to 15 microsieverts for a hip and spine examination, depending on the equipment. Tell the imaging center if you could be pregnant.

Continue Your Journey

A bone density test shows where you are today, while nutrition, exercise, fall prevention, and appropriate medical care help protect tomorrow. Continue with our complete guide: How Do I Prevent Osteoporosis and Bone Loss During Menopause Naturally?

Your Second Spring is an opportunity to protect mobility, preserve independence, and strengthen your bones before silent bone loss becomes a life-changing fracture.

References

1. U.S. Preventive Services Task Force. “Screening for Osteoporosis to Prevent Fractures: US Preventive Services Task Force Recommendation Statement.” JAMA. 2025;333(6):498–508. USPSTF recommendation.
2. Krueger D, et al. “DXA Reporting Updates: 2023 Official Positions of the International Society for Clinical Densitometry.” Journal of Clinical Densitometry. 2024;27(1):101435. PubMed record.
3. LeBoff MS, et al. “The Clinician’s Guide to Prevention and Treatment of Osteoporosis.” Osteoporosis International. 2022;33:2049–2102. Full-text clinical guide.
4. Manolagas SC, O’Brien CA, Almeida M. “The Role of Estrogen and Androgen Receptors in Bone Health and Disease.” Nature Reviews Endocrinology. 2013;9:699–712. Full-text review.
5. National Institutes of Health, Office of Dietary Supplements. “Calcium: Fact Sheet for Health Professionals.” Updated 2026. NIH calcium guidance.
6. International Atomic Energy Agency. “Radiation Protection of Patients During DXA.” IAEA radiation guidance.
7. Centers for Medicare & Medicaid Services. “Bone Mass Measurements.” Medicare coverage information.
8. U.S. Food and Drug Administration. “FDA Qualifies Total Hip Bone Mineral Density as a Surrogate Endpoint for Osteoporosis Drug Development.” December 19, 2025. FDA announcement.