Osteoporosis Screening (DEXA Scan) for Seniors – Bone Density Testing
Osteoporosis is a condition in which bones become weak and brittle – increasing the risk of fractures from even minor falls. It affects millions of seniors worldwide, but it often goes undiagnosed until a fracture occurs. The DEXA scan (Dual-Energy X-ray Absorptiometry) is the gold standard for measuring bone mineral density (BMD). This guide explains what the DEXA scan is, who should get it, how to interpret your results, and how to prevent and manage osteoporosis.
women and 1 in 5 men over 50 will experience an osteoporotic fracture in their lifetime. Regular bone density screening can identify those at risk and enable preventive treatment.
What Is Osteoporosis?
Osteoporosis means "porous bones." It's a condition where bones lose density and become fragile, increasing the risk of fractures – especially in the hip, spine, and wrist.
- Silent disease: Osteoporosis has no symptoms until a fracture occurs.
- Risk increases with age: Both men and women lose bone density as they age.
- Women are at higher risk: Especially after menopause, due to estrogen decline.
- Preventable and treatable: Early detection can prevent fractures and maintain independence.
What Is a DEXA Scan?
DEXA (Dual-Energy X-ray Absorptiometry) is a low-dose X-ray that measures bone mineral density (BMD). It is the most accurate and widely used test for diagnosing osteoporosis.
- Painless and non-invasive: No needles or injections.
- Quick: Takes about 15-30 minutes.
- Low radiation: Exposure is minimal – less than a chest X-ray.
- Measures: Usually the hip and spine, where fractures are most dangerous.
Understanding Your DEXA Results – The T-Score
Your DEXA scan results are reported as a T-score, which compares your bone density to that of a healthy 30-year-old adult.
| T-Score | Category | What It Means |
|---|---|---|
| ≥ -1.0 | Normal | Bone density is in the normal range. |
| -1.0 to -2.5 | Osteopenia (Low Bone Mass) | Bone density is below normal – increased risk of developing osteoporosis. |
| ≤ -2.5 | Osteoporosis | Bone density is significantly low – high risk of fractures. |
Z-Score: This compares your bone density to others of your age, gender, and ethnicity. It's less commonly used for diagnosis but helpful for identifying secondary causes.
Who Should Get a DEXA Scan?
- Women aged 65 and older – recommended for all women.
- Men aged 70 and older – recommended for all men.
- Postmenopausal women under 65 with risk factors.
- Men aged 50-69 with risk factors.
- Anyone with a fragility fracture – a fracture from a minor fall.
- Anyone with conditions that cause bone loss (rheumatoid arthritis, hyperthyroidism, etc.).
- Long-term steroid users – corticosteroids increase bone loss.
- Those with a family history of osteoporosis or hip fractures.
Risk Factors for Osteoporosis
Preventing and Managing Osteoporosis
1. Nutrition
- Calcium: 1000-1200 mg/day – milk, curd, paneer, ragi, tofu, leafy greens.
- Vitamin D: 800-1000 IU/day – sunlight, fortified foods, supplements.
- Protein: Adequate protein intake supports bone health.
- Vitamin K: Leafy greens support bone metabolism.
2. Exercise
- Weight-bearing exercises: Walking, jogging, dancing, stair climbing.
- Strength training: Light weights, resistance bands.
- Balance exercises: Tai Chi, yoga – to prevent falls.
- Frequency: At least 30 minutes, 5 days a week.
3. Medications
- Bisphosphonates: Alendronate, risedronate – first-line treatment.
- Denosumab: Injectable medication.
- Hormone therapy: For some postmenopausal women.
- Teriparatide: For severe osteoporosis.
- Always: Discuss medications with your doctor.
4. Fall Prevention
- Home safety: Remove tripping hazards, improve lighting.
- Grab bars: In bathrooms and near stairs.
- Proper footwear: Non-slip shoes.
- Vision check: Regular eye exams.
- Medication review: Some drugs increase fall risk.
Osteoporosis in India – Key Considerations
- High prevalence: Osteoporosis is common in India, especially among older adults and postmenopausal women.
- Vitamin D deficiency: Despite abundant sunlight, many Indians are Vitamin D deficient – especially those who stay indoors.
- Dietary calcium: Many Indian diets are low in calcium – especially among vegetarians. Include calcium-rich plant foods (ragi, tofu, leafy greens) and dairy if tolerated.
- Availability of DEXA: DEXA scans are available in major hospitals and diagnostic centres in cities. Rural areas may have limited access.
- Cost: DEXA scans cost ₹1,500 – ₹4,000 in India. Government hospitals may offer lower rates.
- Ayurvedic treatments: Some traditional remedies may support bone health – but always inform your doctor about any herbal treatments.
How Often Should You Repeat a DEXA Scan?
- Normal BMD (T-score ≥ -1.0): Retest every 5-10 years.
- Osteopenia (T-score -1.0 to -2.5): Retest every 2-5 years.
- Osteoporosis (T-score ≤ -2.5): Retest every 1-2 years (or as recommended by your doctor).
- After starting treatment: Retest after 1-2 years to check response.
Frequently Asked Questions
What is the difference between osteoporosis and osteopenia?
Osteopenia is a precursor to osteoporosis – bone density is lower than normal but not as low as osteoporosis. It's a warning sign that you're at increased risk. Lifestyle changes at this stage can often prevent progression.
Can osteoporosis be reversed?
While osteoporosis can't be completely reversed, it can be managed and stabilised. Treatment can increase bone density, reduce fracture risk, and prevent further bone loss. Early detection is key.
Is the DEXA scan painful?
No – the DEXA scan is completely painless. You lie on a padded table while a scanning arm passes over you. There are no needles or injections. It's non-invasive and quick.
Are there any side effects of a DEXA scan?
The DEXA scan uses very low-dose radiation – less than a chest X-ray. It is considered safe and has no known side effects. However, if you are pregnant, inform your doctor before the scan.
Can men get osteoporosis?
Yes – while it's more common in women, men can also develop osteoporosis. Men over 70 are at increased risk. Risk factors include steroid use, low testosterone, and lifestyle factors.
🦴 Strong Bones, Strong Life
Osteoporosis is a silent disease – but it doesn't have to be a life sentence. With regular screening, good nutrition, exercise, and treatment when needed, you can protect your bones and maintain your independence.
📌 Your next step: If you're a woman 65+, a man 70+, or have risk factors, talk to your doctor about scheduling a DEXA scan. It's one of the most important things you can do for your bone health.
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Medically reviewed disclaimer: This content is for informational purposes only and does not replace professional medical advice. Always consult your doctor for personalised care.