1. Osteoporosis: the truth you need to know
Bones support the human body, not only supporting the body, but also protecting internal organs. Healthy bones are made up of a dense bone cortex and loose trabecular bone, which work together to maintain bone strength and elasticity. However, as we age, the rate of bone loss accelerates, leading to lower estrogen levels and more pronounced bone loss, especially in postmenopausal women. According to the Hong Kong Health Bureau, about 50% of women over the age of 65 have osteoporosis, and about 20% of men have osteoporosis.
Bone loss can be caused by a variety of factors, including genetic factors, hormonal changes, malnutrition (such as insufficient calcium and vitamin D intake), lack of exercise, smoking, and excessive alcohol consumption. In addition, certain medications (such as steroids) and chronic diseases such as hyperthyroidism can also promote bone loss. The impact of osteoporosis cannot be underestimated, increasing the risk of fractures, especially hip, spine and wrist fractures, seriously affecting quality of life and even leading to prolonged bed rest and death.
2. Government Osteoporosis Screening Program: Your Health Partner
In order to help the public detect osteoporosis problems early, the Hong Kong government has launched itThe program provides screening services to high-risk groups. Typically, this plan includes questionnaires, bone density tests (e.g., dual-energy X-ray absorptiometry, DEXA scans), and interpretation and advice from a specialist physician. The screening target is mainly women over 65 years old, men over 70 years old, and high-risk groups with a history of fractures or family history.
DEXA scans are currently the most accurate method for detecting bone density, and the results are expressed in T-and Z-values. The T-value reflects the comparison with bone density in young, healthy adults, while the Z-value reflects the comparison with people in the same age group. According to the World Health Organization (WHO) standard, a T-value below -2.5 is osteoporosis. The importance of screening results is that they help individuals understand their bone health and take timely preventive and therapeutic measures.
3. How do you interpret a screening report?
When you receive itYou may see T-and Z-values. The T-value is the most important indicator.
- T-value ≥-1.0: normal bone mineral density
- T-value between -1.0 and -2.5: osteopenia (osteopenia)
- T-value ≤-2.5: osteoporosis
The Z-value is used to assess whether bone density is lower than the average for people of the same age. If the Z-value is too low, it may indicate other health problems (such as endocrine diseases). Screening results are closely related to osteoporosis, which significantly increases the risk of fractures, especially in those with a T-value of less than -2.5. When discussing your screening results with your doctor, you may want to ask the following questions:政府免費骨質疏鬆檢查
- Is my bone density normal?
- Need more checks?
- What treatments and preventive measures are right for me?
4. Alternatives to government osteoporosis screening programs
If you are not eligiblePlanned conditions, or a desire to monitor bone density more often, may consider self-funded testing. Private medical institutions in Hong Kong offer a variety of bone density testing services, with prices ranging from hundreds to thousands of Hong Kong dollars. Aside from DEXA scans, there are alternative methods such as quantitative ultrasound (QUS) and CT scans, but their accuracy is slightly lower than DEXA.
Other forms of bone health assessment include blood tests (such as calcium, phosphorus, and vitamin D levels), urinalysis (such as markers of bone metabolism), and x-rays (used to diagnose fractures). These tests help assess bone health, but they are not a subfactor of bone density testing.
5. Strengthening Bones: A Guide to Action
Preventing and improving osteoporosis requires a multifaceted approach. Nutrition is fundamental and daily consumption is recommended.
- Calcium: 1000-1200 mg (from dairy products, dark green vegetables, or supplements)
- Vitamin D: 800-1000 IU (from sunlight, fish, or supplements)
- Protein: 1-1.2 grams per kilogram of body weight (maintains muscle and bone health)
In terms of exercise, weight-bearing exercises (such as walking, jogging) and strength training (such as lifting weights) can stimulate bone growth for 30 minutes at least three times a week. Lifestyle adjustments are also important, such as quitting smoking, limiting alcohol intake (no more than 1-2 cups per day), and avoiding excess caffeine (no more than 3 cups of coffee per day).
In a nutshellWhile this system provides a convenient screening channel for the public, bone health requires daily attention and maintenance. Through proper nutrition, exercise, and lifestyle habits, you can effectively prevent osteoporosis and enjoy the quality of life brought by strong bones.