What Are the Warning Signs of Osteoporosis in the Elderly? A Look at Bone Density Tests, Calcium and Vitamin D Supplementation, and National Health Insurance Coverage

Osteoporosis is a disease characterized by bone loss and increased bone fragility, with higher risk in postmenopausal women and the elderly. Most people have no obvious symptoms before a fracture. According to data from the Health Promotion Administration, nearly 20% of people aged 65 and older self-report osteoporosis, and 1 in 10 women aged 50 and older have the condition. It can be detected early through dual-energy X-ray absorptiometry (DXA) bone density testing (T-score ≤ -2.5 indicates osteoporosis), and prevention involves adequate calcium, vitamin D, and regular exercise. National Health Insurance (NHI) coverage for treatment drugs has been expanded since February 2025.

What is osteoporosis? Why are the elderly at higher risk?

According to health education materials from the Health Promotion Administration and National Taiwan University Hospital:

Osteoporosis is a disease characterized by reduced bone mass and deterioration of bone microarchitecture, leading to increased bone fragility and fracture risk. National Taiwan University Hospital explains that it results from 'bone resorption exceeding bone formation,' causing bones to become porous and weak.
According to the 2021 National Health Interview Survey by the Health Promotion Administration, 18.2% of people aged 65 and older self-reported a diagnosis of osteoporosis. Another survey from 2017–2020 found that 1 in 10 women aged 50 and older have osteoporosis, and 8.1% of the population aged 50 and older overall (the two surveys differ in year and target population, so numbers should not be directly compared).
Risk factors listed by National Taiwan University Hospital include: insufficient exercise, postmenopausal women, advanced age, underweight, family history or previous fractures, excessive alcohol consumption, smoking, or high caffeine/tea intake, long-term steroid use, inadequate calcium and vitamin D intake, and endocrine diseases such as rheumatoid arthritis, thyroid disorders, or diabetes.
China Medical University Hospital describes osteoporosis as often 'silent,' with most people having no obvious symptoms or pain before a fracture.

How is a bone density test (DXA) performed? What does the T-score mean?

According to National Taiwan University Hospital and Ministry of Health and Welfare data:

The primary method for diagnosing osteoporosis is dual-energy X-ray absorptiometry (DXA) bone density testing. The test takes about 15 minutes, and the radiation dose is about one-tenth that of a standard chest X-ray (National Taiwan University Hospital).
The Ministry of Health and Welfare states that NHI uses DXA rather than ultrasound as the basis for diagnosing osteoporosis to avoid overdiagnosis and overuse of medication.
T-score interpretation criteria (World Health Organization standards, consistently used by National Taiwan University Hospital and China Medical University Hospital): T-score ≥ -1 is normal; -2.5 < T-score < -1 indicates osteopenia (low bone mass); T-score ≤ -2.5 indicates osteoporosis; T-score ≤ -2.5 with a fracture indicates severe osteoporosis.
Another page from National Taiwan University Hospital notes that the screening age recommendations from the Taiwanese Osteoporosis Association (e.g., women aged 65 and older, men aged 70 and older) are professional society recommendations and 'differ in content' from NHI's actual coverage conditions for bone density testing; the two should not be confused. We have not found a complete official coverage list that can be quoted verbatim. To confirm NHI coverage eligibility for bone density testing, it is advisable to consult a medical institution or the NHI Administration.

NHI coverage criteria for osteoporosis treatment drugs (expanded from February 2025)

According to announcements by the Ministry of Health and Welfare and the National Health Insurance Administration:

The Ministry of Health and Welfare announced that starting February 1, 2025, NHI coverage for osteoporosis treatment drugs has been revised: first-line drug coverage is now available for patients with high-risk factors who have not yet fractured (primary prevention), and secondary prevention coverage has been extended from only vertebral and hip fractures to include distal radius (wrist) and proximal humerus fractures. The Ministry estimates that approximately 134,000 patients will benefit annually, with an annual drug cost increase of about NT$865 million.
The Health Technology Assessment report from the NHI Administration specifies the risk factor conditions for primary prevention: must meet one of the following: rheumatoid arthritis, diabetes with insulin use, or glucocorticoid use (equivalent to prednisolone >5 mg/day for more than 3 months), and age restrictions have been removed.
Before this expansion, according to National Taiwan University Hospital, NHI first-line drug coverage conditions were: T-score ≤ -2.5 with one hip or vertebral fracture, or T-score ≤ -1 with two or more hip or vertebral fractures. Second-line drugs required T-score ≤ -3.0 with two or more hip or vertebral fractures, or failure or intolerance to first-line drugs after one year.
Whether bone density testing itself is covered by NHI depends on individual conditions for different groups (e.g., specific endocrine diseases, non-traumatic fractures, before and after cancer treatment). Actual eligibility should be confirmed with the NHI Administration or your hospital, rather than relying solely on online information.

How to supplement calcium, vitamin D, and exercise

According to the Health Promotion Administration and hospital health education materials:

The Health Promotion Administration's '3 Tips for Bone Health' recommends: regular exercise (at least 150 minutes of weight-bearing exercise per week), balanced intake of calcium, vitamin D3, and protein (dairy products, calcium-rich soy products, black sesame, dried small fish, dark green vegetables, etc.), and moderate sun exposure (2–3 times per week, 10–20 minutes each time).
National Taiwan University Hospital recommends that adults aged 50 and older consume 1200 mg of calcium (from diet and supplements), 800 IU of vitamin D3, and 1–1.2 g of protein per kg of body weight daily. China Medical University Hospital recommends a range of 1000–1200 mg of calcium and 800–1000 IU of vitamin D. The numbers differ slightly between the two sources. It is advisable to consult a physician or dietitian for actual intake.
Exercise should focus on weight-bearing and resistance training (e.g., brisk walking, stair climbing, strength training), and the Health Promotion Administration advises avoiding smoking and excessive alcohol consumption.

What are the categories of treatment drugs? Fracture consequences should not be underestimated

According to the Department of Pharmacy and clinical health education materials at National Taiwan University Hospital:

National Taiwan University Hospital's pharmacy education materials classify osteoporosis treatment drugs into three categories: antiresorptive agents (e.g., oral or injectable bisphosphonates, RANKL inhibitors, selective estrogen receptor modulators), bone-forming agents (e.g., parathyroid hormone preparations, requiring daily subcutaneous injection), and mixed-mechanism drugs. Actual drug selection should be evaluated by a physician based on individual fracture risk, kidney function, and comorbidities, and patients should not choose medications on their own.
National Taiwan University Hospital clearly reminds that before using drugs, a physician must confirm indications and contraindications. NHI coverage also has corresponding conditions and treatment limits (e.g., some drugs are limited to a certain number of doses every two years). The actual treatment plan should follow the physician's prescription.
National Taiwan University Hospital notes that once an elderly person suffers a hip fracture, about 40% of patients cannot walk independently after surgery, and 60% require assistive devices such as crutches. Within one year after a hip fracture, the mortality rate is approximately 22% for men and 15% for women in Taiwan (these data on fracture consequences from an osteoporosis perspective come from different sources than the fall prevention data cited on our 'Fall Prevention' page; both are from official or hospital health education materials and are not contradictory, just from different measurement angles).
Osteoporosis itself usually has no obvious symptoms except for fractures. Many elderly individuals are diagnosed only after a fracture occurs—this is one reason why official health education materials recommend early bone density testing.

FAQ

What are the symptoms of osteoporosis? How can I know if I have it?

According to health education materials from China Medical University Hospital, osteoporosis is often described as a 'silent' condition, with most people having no obvious symptoms or pain before a fracture. It is primarily confirmed through dual-energy X-ray absorptiometry (DXA) bone density testing. According to World Health Organization criteria, a T-score ≤ -2.5 indicates osteoporosis. Those with risk factors such as menopause, long-term steroid use, family history, or previous fractures are advised to consult a physician early about whether testing is needed.

Does NHI cover bone density testing?

NHI has specific coverage conditions for bone density testing in certain high-risk groups (e.g., specific endocrine diseases, non-traumatic fractures, before and after cancer treatment), but the exact eligibility varies by individual. We have not found a complete official list that can be quoted verbatim. It is recommended to directly inquire with the NHI Administration or your hospital to confirm eligibility, rather than relying solely on online information.

Have NHI coverage criteria for osteoporosis treatment drugs changed recently?

Yes. According to an announcement by the Ministry of Health and Welfare, starting February 1, 2025, NHI coverage for osteoporosis treatment drugs has been expanded: first-line drug coverage is now available for patients with high-risk factors who have not yet fractured (primary prevention; risk factors include rheumatoid arthritis, diabetes with insulin use, long-term glucocorticoid use, etc.), and secondary prevention coverage has been extended from only vertebral and hip fractures to include distal radius (wrist) and proximal humerus fractures. It is estimated that approximately 134,000 patients will benefit annually.

How much calcium and vitamin D should the elderly supplement daily?

According to health education materials from National Taiwan University Hospital, adults aged 50 and older are recommended to consume 1200 mg of calcium (from diet and supplements) and 800 IU of vitamin D3 daily. China Medical University Hospital's materials recommend a range of 1000–1200 mg of calcium and 800–1000 IU of vitamin D. The numbers differ slightly between the two sources. It is advisable to consult a physician or dietitian for actual intake, and to combine with regular weight-bearing exercise and moderate sun exposure.

What medications are available for treating osteoporosis?

According to health education materials from the Department of Pharmacy at National Taiwan University Hospital, treatment drugs can be divided into three categories: antiresorptive agents (e.g., bisphosphonates, RANKL inhibitors, selective estrogen receptor modulators), bone-forming agents (e.g., parathyroid hormone preparations, requiring daily subcutaneous injection), and mixed-mechanism drugs. Actual medication selection should be evaluated by a physician based on fracture risk, kidney function, and comorbidities. NHI coverage also has corresponding conditions and treatment limits, and patients should not choose medications on their own.

How serious are the consequences of fractures caused by osteoporosis?

According to health education materials from National Taiwan University Hospital, once an elderly person suffers a hip fracture, about 40% of patients cannot walk independently after surgery, and 60% require assistive devices such as crutches. Within one year after a hip fracture, the mortality rate is approximately 22% for men and 15% for women in Taiwan. Osteoporosis usually has no obvious symptoms in its early stages, so early detection through bone density testing, along with calcium and vitamin D supplementation and exercise, is key to reducing fracture risk.

Updated: 2026-07-17 · This page is a neutral compilation of information for reference only, not medical, legal, tax, or admission advice. For actual regulations and services, please refer to official announcements from competent authorities and the institutions themselves.