Why is bone health important?
Bones are living tissues. They provide structure, protect organs, support movement and store important minerals. Bone health therefore matters throughout the entire life course—not only when people become older.
During childhood and adolescence, the skeleton is growing rapidly. The amount and quality of bone built during these years can influence bone health later in life.
Osteoporosis is a disease in which bones become weaker and more fragile, increasing the likelihood of fractures. It often has no obvious symptoms until a fracture occurs. :contentReference[oaicite:1]{index=1}
Fragility fractures can affect mobility, independence, education, work, family life and quality of life. Their prevention is therefore both a health issue and a social and economic issue. :contentReference[oaicite:2]{index=2}
If healthy bones are built over a lifetime, what conditions help people have the opportunity to build and maintain them?
Personal hints
Ask yourself
- What do you already know about your bones?
- Why might adolescence be important for building strong bones?
- What foods and nutrients contribute to healthy bones?
- How does regular movement support the musculoskeletal system?
- Where could you find trustworthy information about bone health?
Look beyond the individual
Bone health is not simply a matter of personal choices.
Food availability, household income, safe places for physical activity, education, healthcare access, medications, disability, housing and the wider environment can all influence bone health and fracture risk.
Explore
Let's build a common language for understanding bones, osteoporosis and fracture prevention.
Bone
Living tissue that provides support, protects organs, enables movement and stores minerals.
Bone density
A measure related to the amount of mineral contained in bone. Lower bone density can be associated with greater fracture risk.
Osteoporosis
A disease characterized by reduced bone strength, making bones more fragile and more likely to break. :contentReference[oaicite:3]{index=3}
Osteopenia
Bone density that is lower than the usual young-adult reference range but does not meet the diagnostic threshold for osteoporosis.
Fragility fracture
A fracture resulting from a force that would not normally break healthy bone, such as a fall from standing height.
Bone mineral density
A measurement used as part of assessing bone health and fracture risk in appropriate clinical settings.
Fracture risk
The probability that a person will experience a fracture, influenced by multiple clinical and environmental factors.
Healthy ageing
Supporting health, function, independence and participation across the life course.
Learn
Bones are living tissues
Bone is not an inert structure. Throughout life, old bone is removed and new bone is formed. This continuous process helps the skeleton adapt and maintain strength.
During childhood and adolescence, bone formation is particularly important because the skeleton is growing and developing.
Why adolescence matters
The teenage years are an important period for skeletal development. Adequate nutrition, regular physical activity and overall health support normal growth and development.
This does not mean that young people should be expected to manage all future osteoporosis risk themselves. Bone health is shaped by biology, living conditions, healthcare, education and broader social environments.
Nutrition and bone health
Calcium, vitamin D, protein and other nutrients contribute to healthy bones and normal body function.
Nutritional needs vary according to age, health status and other circumstances. Access to nutritious food is therefore an important population-health issue.
Movement and physical activity
Appropriate physical activity supports bones, muscles, balance and physical function.
For young people, active play, sport and other enjoyable forms of movement can contribute to healthy development. For older adults, maintaining strength, balance and mobility can also help reduce some risks associated with falls.
What is osteoporosis?
Osteoporosis weakens bone and increases the risk of fractures. It can affect people without obvious warning signs, which means that risk may not become apparent until a fracture occurs. :contentReference[oaicite:4]{index=4}
Risk is influenced by many factors, including age, previous fractures, family history, certain medical conditions and medications, nutritional factors, physical inactivity and smoking.
Fragility fractures
Fragility fractures are an important consequence of osteoporosis. They can lead to pain, reduced mobility, disability and loss of independence.
WHO identifies fragility fractures as a global public health concern and emphasizes the importance of prevention, risk assessment and appropriate management. :contentReference[oaicite:5]{index=5}
Falls and the environment
Fracture risk is influenced not only by bone strength but also by the likelihood of falling.
Lighting, stairs, flooring, housing design, transportation, accessibility and safe public spaces can therefore become part of a bone-health strategy.
Osteoporosis is not simply "an old person's disease"
Although osteoporosis and fragility fractures become more common with increasing age, bone health begins much earlier.
Healthy ageing starts across the life course. WHO notes that population ageing is occurring worldwide and that by 2050, around 80% of people aged 60 and older will live in low- and middle-income countries. :contentReference[oaicite:6]{index=6}
Think
Critical-thinking questions
- Why should bone health be discussed with adolescents if osteoporosis usually becomes more common later in life?
- If two people have different access to nutritious food and safe spaces for physical activity, could their opportunities for healthy bone development be different?
- Why is a fracture not always simply an accident?
- How could housing design influence fracture risk?
- Should osteoporosis prevention be mainly an individual's responsibility, or should health systems and governments also have responsibilities?
- Why might osteoporosis be underdiagnosed or undertreated in some populations?
Connect: from Self to World
My bones
Understand how bones grow, change and respond to nutrition, movement and health across life.
Our everyday environment
Think about food access, physical activity, household safety, falls and support for people living with mobility limitations.
Healthy places
Explore safe parks, schools, recreation spaces, accessible buildings, transportation and housing.
Health-system responsibility
Ask how national health systems support prevention, diagnosis, treatment, rehabilitation and healthy ageing.
Global bone health
Compare how ageing, nutrition, poverty, healthcare access and health-system capacity influence osteoporosis and fracture outcomes worldwide.
Social Determinants of Health
Bone health and fracture outcomes are influenced by the conditions in which people are born, grow, learn, work, live and age.
- Food security: access to nutritious food affects opportunities for adequate nutrition throughout life.
- Income: household resources can influence food, housing, recreation, transportation and healthcare access.
- Housing: safe, accessible housing can influence fall risk, independence and recovery after fractures.
- Education: health literacy can influence people's ability to understand prevention, risk and treatment options.
- Physical environment: safe streets, parks, schools and public spaces can support physical activity and mobility.
- Healthcare access: timely assessment, diagnosis, treatment and rehabilitation can influence fracture outcomes.
- Social support: family, peers and community networks can influence recovery, mobility and independence.
Can we expect the same bone-health outcomes from everyone when people do not have the same access to nutritious food, safe environments or healthcare?
Sustainable Development Goals
SDG 3 is the central connection, because bone health, fracture prevention, rehabilitation and healthy ageing are part of health and well-being.
But bone health also connects to SDG 2 through food and nutrition, SDG 4 through health literacy and education, SDG 10 through health inequities, and SDG 11 through safe, accessible and inclusive communities.
Global Leadership & Evidence
Who leads bone-health action?
- WHO — global work on musculoskeletal health, healthy ageing, rehabilitation and fragility-fracture prevention. :contentReference[oaicite:7]{index=7}
- International Osteoporosis Foundation (IOF) — global advocacy, education, evidence and action on osteoporosis and fragility fractures. :contentReference[oaicite:8]{index=8}
- National and provincial health authorities — prevention, diagnosis, treatment, rehabilitation, surveillance and healthy-ageing programmes.
- Primary healthcare services — identification of risk, appropriate assessment, referral, prevention and continuity of care.
- Universities and scientific organizations — research on bone biology, fracture risk, prevention, treatment and rehabilitation.
- Communities and civil society — advocacy for accessible environments, healthy ageing and equitable access to care.
Global Evidence Date
Global evidence: WHO & International Osteoporosis Foundation, 2026
GHE last reviewed: August 2026
Next scheduled review: August 2027
WHO identifies osteoporosis and fragility fractures within the global burden of musculoskeletal conditions, while the International Osteoporosis Foundation provides specialized global evidence and advocacy for osteoporosis prevention, diagnosis and treatment. :contentReference[oaicite:9]{index=9}
GHE treats this page as living evidence, not a static textbook. Important evidence, definitions, recommendations and global data should therefore be reviewed periodically.
Reflect
My reflection
What did you learn about bones that you did not know before?
Why might adolescence be an important time to learn about lifelong bone health?
What question about bone health would you like to investigate further?
Equity reflection
Which groups may have fewer opportunities to build or maintain healthy bones?
How might poverty, food insecurity, disability, housing or healthcare access influence fracture risk and recovery?
What could communities do to make healthy ageing and mobility more equitable?
Act
- Learn how bones grow and change across the life course.
- Seek reliable information about nutrition, physical activity and bone health.
- Support inclusive opportunities for safe, enjoyable physical activity.
- Notice how housing, transportation and public spaces can influence mobility and safety.
- Challenge stereotypes that portray osteoporosis or disability as simply an unavoidable consequence of ageing.
- Learn why early recognition and appropriate healthcare can matter after a suspected fragility fracture.
- Ask how health systems can make osteoporosis prevention, diagnosis, treatment and rehabilitation more accessible.
- Think globally: what would equitable bone health look like in countries with very different resources and health systems?
Test Your Thinking: 10 MCQs
These questions test knowledge, interpretation, application, SDH, SDGs, health-system responsibility and global-health thinking.
1. Why are bones described as living tissues?
Answer: B
2. Why is adolescence relevant to lifelong bone health?
Answer: B
3. What best describes osteoporosis?
Answer: B
4. Which statement best explains a fragility fracture?
Answer: B
5. Which example best demonstrates an SDH affecting bone health?
Answer: B
6. A community has unsafe sidewalks and poor lighting. Why might this matter for osteoporosis?
Answer: A
7. Which response best reflects a health-system approach to osteoporosis?
Answer: B
8. Which SDG is most directly connected to osteoporosis and bone health?
Answer: A
9. Which statement best reflects health equity?
Answer: B
10. Which statement best represents the GHE approach to osteoporosis?
Answer: B