This article has been fact-checked by Dr Toon Dong Hao, Orthopaedic Surgeon at HC Orthopaedic, Singapore.
About the Doctor
Bone health is shaped by genetics, hormones, physical activity and most importantly, nutrition.
For adults across Asia, maintaining strong bones is becoming increasingly challenging due to changing lifestyles, limited outdoor time, higher intake of processed foods and widespread vitamin D deficiency. Adopting a nutrient-rich dietary pattern becomes critical to preserve long-term skeletal integrity. Consistently consuming foods rich in minerals, vitamins and proteins not only supports bone density but also contributes to reducing future fracture risk.
Calcium-rich foods: The foundation of bone strength
Calcium forms the structural backbone of hydroxyapatite, the mineral complex responsible for bone rigidity. Adults require approximately 1,000–1,200 mg/day, yet many Asian populations routinely fall short due to low dairy consumption and limited availability of calcium-fortified foods [1].
Dairy and fortified options
Milk, yoghurt, and cheese remain among the most bioavailable calcium sources because of their favourable calcium-to-phosphorus ratios. For individuals who avoid dairy, fortified plant-based beverages such as soy or oat milk provide standardized calcium content, making them reliable alternatives.
Traditional sources
Several culturally rooted foods naturally contribute to calcium intake:
- Calcium-set tofu (made with calcium sulfate)
- Small fish eaten with bones such as sardines and anchovies
- Sesame seeds, ragi (finger millet), and leafy vegetables like bok choy and mustard greens
While these plant and fish-based sources are nutritionally valuable, factors such as oxalates and phytates affect calcium absorption. Using a combination of diverse calcium-rich foods helps ensure more consistent intake.
Vitamin D: The key to calcium absorption
Vitamin D plays an important role in calcium absorption and bone remodelling. Deficiency remains widespread especially among the Asian population due to indoor work patterns, air pollution, darker skin pigmentation, and clothing practices that limit sun exposure [2].
Dietary sources
Although diet cannot fully meet the body’s vitamin D requirement, certain foods offer meaningful amounts:
- Fatty fish such as salmon, mackerel, and tuna
- Egg yolks
- Fortified milk, cereals, and plant-based beverages
Sun exposure
Safe and regular sunlight exposure remains the primary method to maintain adequate vitamin D levels. However, when sun exposure is insufficient, relying on food becomes especially important.
Protein and bone matrix support
Protein is essential for forming the collagen matrix that anchors mineral deposition. Balanced protein intake (0.8–1.0 g/kg/day) from fish, dairy, legumes, lentils, tofu, eggs, and lean meats is associated with better bone mineral density and reduced age-related bone loss when paired with adequate calcium[3].
Extremely high sodium, excessive caffeine, and soft drinks may increase calcium excretion from the body and should be moderated.
Micronutrients beyond calcium and vitamin D
Magnesium and phosphorus
Magnesium-rich foods such as nuts, seeds, whole grains, and legumes support bone mineralization. Phosphorus, found in poultry, fish, and dairy, also plays a structural role and forms part of hydroxyapatite.
Vitamin K
Leafy greens such as spinach, kale, and coriander supply vitamin K, which is vital for activating osteocalcin, a protein necessary for effective bone formation [4].
Omega-3 fatty acids
Foods rich in omega-3 fatty acids, including walnuts, fatty fish, and flaxseeds, may reduce inflammation-related bone resorption and support overall skeletal health.
When foods may not be enough
Calcium and vitamin D supplements benefit individuals with deficiencies, limited dietary intake or increased physiological needs. However, recent large-scale trials show limited benefit of vitamin D supplementation alone in an otherwise healthy adult, concluding that it should be advised by a physician rather than regular consumption [5].
Consultation with a clinician is recommended for people with early menopause, steroid use, low BMI, chronic illness, or prior fractures.
Putting it into practice
A bone-supportive dietary pattern for Asian adults may include:
- Daily dairy or fortified alternatives
- Tofu or small fish with bones several times weekly
- Green leafy vegetables in meals
- Frequent consumption of lentils, legumes, nuts, and seeds
- Weekly servings of fatty fish
- Adequate sun exposure and weight-bearing exercise
Lifestyle measures such as smoking cessation, limiting alcohol, and maintaining muscle strength further protect the skeleton.
References
- World Health Organization. Calcium and Bone Health – Nutrition Guidance.
- Centers for Disease Control and Prevention. Vitamin D: Fact Sheet for Health Professionals.
- Rizzoli R. Nutrition and bone health. Lancet Diabetes Endocrinol. 2021.
- Shea MK, Booth SL. Vitamin K and bone health. JAMA.
- LeBoff MS et al. Vitamin D supplementation and fractures. N Engl J Med. 2022.
