A DEXA scan (sometimes called a bone density test) is one of the most important tools for understanding your bone health, especially for women. Whether you’re approaching menopause, have risk factors for osteoporosis, or simply want a clear picture of your long-term health, a DEXA scan can provide valuable answers.
This guide covers everything patients commonly ask, from what a DEXA scan is to who needs one and how to prepare.
What Is a DEXA Scan?
A DEXA scan (Dual-Energy X-ray Absorptiometry) is a quick, painless test that measures:
- Bone density
- Bone strength
- Fracture risk
It uses very low-dose X-ray beams to evaluate how strong your bones are—particularly in the hip, spine, and sometimes forearm.
The radiation exposure is minimal (much lower than a typical chest X-ray), making the test extremely safe for most adults.
What Does a DEXA Scan Look For?
A DEXA scan can detect:
- Osteopenia (early bone loss)
- Osteoporosis
- Risk of fractures
- Changes in bone density over time
It also provides T-scores and Z-scores that help determine your fracture risk and whether treatment is recommended.
Who Should Get a DEXA Scan?
Public-interest data and major medical guidelines agree: several groups benefit from bone density testing.
Women Should Get a DEXA Scan If They:
- Are 65+ years old (recommended for all women)
- Are postmenopausal with risk factors, such as:
- Early menopause (before age 45)
- Family history of osteoporosis
- Low body weight
- Smoking history
- Long-term steroid use
- Are perimenopausal or postmenopausal and experiencing fractures
- Have conditions linked to bone loss (thyroid disorders, celiac disease, rheumatoid arthritis)
- Are using medications that may weaken bones
- Want a baseline measurement before starting HRT or bone-health treatment
Younger women may also need a DEXA if they have repeated fractures, chronic conditions, or other risk factors.
How Often Do You Need a DEXA Scan?
Depending on results and risk factors:
- Every 2 years is standard
- More often, if you have osteoporosis or rapid bone loss
- Every 3–5 years, if your bone density is normal and you are low risk
Your provider can help determine the right timing for you.
Is a DEXA Scan Safe?
Yes. DEXA scans use very low levels of radiation, much less than most imaging tests.
A typical DEXA scan exposes you to:
- Less radiation than a cross-country flight
- Less than a chest X-ray
- About the same as a day of natural environmental exposure
It’s considered safe for most adults, including older adults and those with chronic health conditions.
What Happens During a DEXA Scan?
The test is fast, usually 10–20 minutes, and completely noninvasive.
Here’s what to expect:
- You lie on a padded table fully clothed (just remove metal items).
- A scanner passes over your body without touching you.
- You remain still while the machine measures your bone density.
- There is no pain, poking, squeezing, or closed spaces.
- You can resume normal activities immediately afterward.
Most people describe it as easier than getting a dental X-ray.
How to Prepare for a DEXA Scan
Preparation is simple:
- Avoid calcium supplements for 24 hours beforehand.
- Wear comfortable clothing without zippers, metal snaps, or underwire.
- Let the technologist know if you recently had imaging with contrast (like a barium study).
Otherwise, no special steps are needed.
What Do DEXA Scan Results Mean?
You’ll receive:
T-Score
Compares your bone density with a healthy young adult.
- Normal: +1 to –1
- Osteopenia: –1 to –2.5
- Osteoporosis: –2.5 or lower
Z-Score
Compares your bone density with someone your age.
Helpful for diagnosing bone loss in younger women.
Your provider will review your results, explain your fracture risk, and discuss whether you need treatment or lifestyle changes.
Why DEXA Scans Matter for Women
According to patient search data and national guidelines, women often ask:
- “Why are my bones thinning?”
- “What does estrogen have to do with bone health?”
- “Do I need a DEXA if I feel fine?”
The answers lie in hormonal changes.
After menopause, estrogen levels drop quickly, accelerating bone loss. Without screening, many women don’t know they have osteoporosis until after a fracture.
A DEXA scan helps you:
- Prevent future fractures
- Catch bone loss early
- Track changes over time
- Make informed decisions about HRT, supplements, and lifestyle
It’s an essential part of women’s preventive health.
The KS Women’s Health Clinic Approach
At KS Women’s Health Clinic, we believe in proactive, personalized bone health care. We:
- Help determine when you need a DEXA scan
- Coordinate referrals to trusted imaging centers
- Review your results in depth
- Create individualized treatment plans
- Support you with hormone therapy, supplements, and lifestyle tools
Your long-term bone strength matters, and we’re here to help protect it.
Takeaway
A DEXA scan is quick, painless, safe, and incredibly valuable for understanding your bone health. If you’re over 50, postmenopausal, or have risk factors for bone loss, it may be time to schedule one.
Strong bones are part of strong women, and knowledge is the first step. The U.S. Preventive Services Task Force recommends bone density screening with a DEXA scan for women at increased risk of osteoporosis. Learn more about our services here.
This article is for education only and is not medical advice. See our Medical Disclaimer.