Osteoporosis and Osteopenia: Your Bone Density Is Only Part of the Story
The short answer
A bone density scan measures one thing: how much mineral is packed into your bones. That number matters, but it is not the same as your risk of breaking a bone. Fracture risk also depends on your age, whether you have fractured before, how strong you are, how well you balance, what medications you take, your hormonal status, your nutrition, and whether you fall. This is why tools such as FRAX combine bone density with clinical risk factors rather than relying on the scan alone. Bone is living tissue that is rebuilt throughout your life, so the useful question is not only how low the number is, but why your bone remodelling environment changed and what can still be influenced.
First, what is osteopenia?
Osteopenia means your bone mineral density is lower than the reference range for a healthy young adult, but not low enough to meet the threshold for osteoporosis. Osteoporosis represents a greater reduction in density and carries a higher risk of fragility fracture.
Density is usually measured by dual energy X-ray absorptiometry, or DXA, and reported as a T-score. For postmenopausal women and men aged 50 and over, the World Health Organization classification generally uses:
- Normal: T-score of -1.0 or higher
- Osteopenia: T-score between -1.0 and -2.5
- Osteoporosis: T-score of -2.5 or lower
Here is where it gets important. A T-score is not your entire fracture risk. Two people can have almost identical bone density and very different chances of breaking a bone, because fractures do not happen because of density alone. They happen when the strength of the bone and the forces placed on it meet.
Your risk is shaped by age, previous fractures, family history, falls, muscle strength, balance, physical activity, body composition, smoking, alcohol, certain medications, hormonal status, nutritional status and other medical conditions.
This is one reason the FRAX tool exists. It uses bone density together with clinical risk factors to estimate your ten year probability of hip fracture and of major osteoporotic fracture. The number on your DXA report matters. It is not the whole story.
Your bones are not dead structure
Think of your skeleton as a living organ system. Bone is constantly remodelled. Old bone is resorbed, new bone is formed, and this continues throughout your life. The balance between those two processes shifts with age and with changes in your physiology.
When resorption consistently outpaces formation, bone mass declines. That does not mean your body has stopped making bone. It means the relationship between breakdown and rebuilding has changed.
Which raises a better question than “how do I increase my calcium?”
The better question is: why has my bone remodelling environment changed?
Bone responds to what you ask it to do
One of the most overlooked aspects of bone health is mechanical loading. Your skeleton is not simply a frame holding you upright. It is adaptive tissue. When you place appropriate mechanical stress on bone, the body receives a signal that the skeleton needs to be maintained.
The International Osteoporosis Foundation recommends combining weight-bearing activity with resistance training and balance work, suggesting most adults aim for roughly 30 to 40 minutes three or four times a week.
This creates an important distinction. Movement is not only exercise for your muscles. It is information for your skeleton.
Walking. Climbing stairs. Lifting weights. Carrying things. Standing. Jumping, where appropriate. All of these send mechanical signals to the musculoskeletal system.
The type and intensity should depend on your age, fitness, fracture risk and existing bone health. Someone with healthy bones has a different prescription from someone with osteoporosis and a history of vertebral fractures.
Muscle is part of bone health
When people think about osteoporosis they think about bones. But bone and muscle work together. Muscle creates force, and force loads bone. Muscle also keeps you balanced and lets you react when you lose your footing.
That matters, because one of the most important routes to a fracture is not weak bone on its own. It is falling.
A person with better strength, balance and coordination may simply be better equipped not to fall in the first place. Which is why prevention should never be reduced to a bone density conversation. It is also a conversation about strength, balance, coordination, mobility and physical capacity. If this is new territory for you, our page on joint, muscle and bone health covers the musculoskeletal side in more depth.
The fall is often the final event
Imagine two people with similar bone density. One has good leg strength, good balance, strong hips and quick reactions. The other is sedentary, deconditioned and unsteady.
On paper their bone density looks alike. In the real world their fracture risk does not.
This is why exercise programmes for people with osteoporosis usually combine progressive resistance training with balance work, posture, gait and functional strength. Bone health is not only about making the skeleton stronger. It is also about making the person carrying the skeleton stronger.
Nutrition matters, and it is more than calcium
Calcium gets most of the attention. It should not get all of it. Your skeleton is built from more than one nutrient, and bone is not pure mineral. It has a protein matrix.
Worth considering:
- Adequate protein
- Calcium
- Vitamin D
- Magnesium
- Vitamin K
- Phosphorus
- Overall energy availability
- Adequate fruit and vegetable intake
- Enough calories to meet your physiological needs
This does not mean everyone needs a shelf of supplements. I would argue the opposite. Start with the diet, then work out whether there is a genuine reason to supplement.
The International Osteoporosis Foundation identifies calcium and protein as the two key nutrients for bone, and notes that older adults are particularly vulnerable because the ability to absorb vitamins and minerals declines with age and intake often falls short. If you want to know where you actually stand rather than guessing, micronutrient testing can answer that question directly.
Vitamin D is important, and more is not automatically better
Vitamin D plays a genuine role in calcium metabolism and skeletal health. But the wellness industry has turned it into a universal supplement, and that is not how biology works.
The 2024 Endocrine Society guideline is more pointed on this than most people realise. It suggests against routine empiric vitamin D supplementation for generally healthy adults aged 50 to 74, and against routine 25(OH)D testing in healthy adults, while supporting supplementation for specific groups such as adults over 75, pregnancy, children and adolescents, and adults with high risk prediabetes.
So the useful question is not how much vitamin D everyone should take. It is what this individual actually needs, and why.
Hormones matter
Bone is highly responsive to hormonal signals. This is particularly relevant during and after menopause, when falling oestrogen contributes to accelerated bone loss in many women.
Oestrogen is not the only factor worth considering. Depending on the person, evaluation may also look at thyroid function, parathyroid function, sex hormones, testosterone in men, cortisol and other endocrine factors where clinically indicated, menstrual history, menopause history, and any medications affecting bone metabolism.
This is one reason a diagnosis of osteoporosis should not end the investigation. The diagnosis tells you what is happening. It does not tell you why. Our pages on hormone health and thyroid health go into how these systems interact.
The gut and bone connection
Bone health does not exist independently of digestion. Your gastrointestinal tract determines how well you absorb the nutrients bone depends on, so conditions that interfere with absorption can have skeletal consequences.
Examples include coeliac disease, inflammatory bowel disease, chronic diarrhoea, certain gastrointestinal surgeries and other causes of malabsorption.
This does not mean every person with osteoporosis needs a comprehensive stool panel. It means the digestive system belongs in the clinical history when we are trying to understand why bone health changed. Context first, testing second. If malabsorption is a real possibility, gut health is the place to start.
Medications can change the equation
Some medications increase the risk of bone loss or fracture. Prolonged glucocorticoid exposure is one of the most important examples. Others influence fracture risk through different routes, including effects on balance, falls, hormones or bone metabolism.
This is why your medication history matters. If you take something that may affect bone health, that does not mean you should stop it. It means the risk and benefit conversation deserves to happen with the clinician who prescribed it.
What about toxins?
Here I would resist the temptation to turn osteoporosis into a detox problem. Environmental exposures can be relevant to health. But if someone has low bone density, the first question should not be which toxin caused it.
The first questions are more fundamental. What does the diet look like? Is there adequate protein and mineral intake? Is the skeleton being loaded? Is muscle being lost? Are they falling? What is the hormonal status? Are they taking medications that affect bone? Is there evidence of malabsorption? What does overall metabolic health look like?
Only once the fundamentals and the clinical context are established should more specialised testing be considered. This is the same principle we apply across functional medicine testing: do not reach for the most exotic explanation before investigating the most important ones.
What a comprehensive evaluation looks like
If someone comes to me with osteopenia or osteoporosis, I do not want to look at a DXA scan in isolation. I want to understand the person behind the scan, and that starts with a detailed history.
Fracture history. Have you broken a bone? Was the injury proportional to the force involved? Have you had a vertebral compression fracture?
Movement history. Do you resistance train? Do you do weight-bearing activity? How strong are you? How is your balance? Have you fallen?
Nutrition. Are you eating enough? Is protein adequate? What does calcium intake look like? Are there dietary restrictions? Could absorption be a problem?
Hormonal history. For women, age at menopause, menstrual history, hormonal changes, and pregnancy and breastfeeding history where relevant. For men, symptoms of androgen deficiency and testosterone status where clinically indicated.
Medical history and medications. Particularly conditions and drugs known to influence bone metabolism, fracture risk or falls.
Laboratory data. Depending on the history, blood work may help identify nutritional deficiencies, endocrine disorders, metabolic abnormalities or secondary causes of low bone density. Comprehensive blood chemistry is usually the sensible first layer.
DXA and fracture risk. Bone mineral density is important. We interpret it in context.
What you can actually do
If you have osteopenia or osteoporosis, do not assume the diagnosis means nothing can be done. A great deal can be influenced.
1. Build strength. Progressive resistance training is one of the most valuable tools available for maintaining muscle and supporting the skeleton. The programme should match your current capacity, and if you already have osteoporosis, vertebral fractures or high fracture risk it should be modified and supervised.
2. Load your skeleton. Weight-bearing activity provides mechanical stimulus. Walking counts. So do stairs, hiking and dancing. Higher impact work can add stimulus for the right person and is not appropriate for everyone. The goal is not to punish yourself. It is to give the right stimulus for your current physiology.
3. Improve balance. If you are at risk of falling, balance training is not optional, it is fracture prevention. Train single leg balance, coordination, gait, lower body strength and reactive stability. Your ability to stay upright is part of your skeletal health.
4. Eat enough protein. Bone has a protein matrix, and muscle strength influences loading, balance and falls. Protein belongs in any serious conversation about musculoskeletal health.
5. Build a nutrient dense diet. Protein, calcium, magnesium, potassium, vitamin K, other micronutrients and adequate overall energy. Food first, supplements when there is a reason.
6. Do not smoke. Smoking is an established risk factor for poor bone health and fracture. If you smoke, stopping is among the highest value things you can do for your health generally.
7. Be thoughtful about alcohol. Higher intake can raise fracture risk through several routes, including effects on bone and on falls.
8. Reduce fall risk. The IOF’s falls prevention guidance is practical: remove household hazards and improve lighting, train strength and balance, keep vision checked, wear supportive non-slip footwear, eat well, and review medications and any history of falls.
Exercise if you already have osteoporosis
This deserves particular attention, because a diagnosis of osteoporosis does not mean you should stop exercising. Exercise is an important part of maintaining function and reducing fracture risk. But the prescription matters.
The International Osteoporosis Foundation’s guidance for people who already have osteoporosis is specific. Those at high risk should avoid trunk flexion exercise because it may increase spine fracture risk, while trunk extension and abdominal stabilisation work are considered safe. Powerful twisting movements of the trunk should be avoided. Deep backbends and forward bending while carrying a load are discouraged. Programmes should be supervised and targeted, starting at light to moderate intensity and progressing with capability.
So the answer is not “do not move.” It is “learn how to move appropriately for the body you have.”
What about medication?
This is important, and it is where functional medicine sometimes gets it wrong. Functional medicine should never become an excuse to ignore effective conventional treatment.
For people at sufficiently high fracture risk, drug therapy reduces fracture risk and can be an important part of care. The Endocrine Society guideline on pharmacological management of osteoporosis in postmenopausal women, published in 2019 and updated in 2020, recommends treating high risk individuals, particularly those with a previous fracture, and sets out a tiered approach beginning with bisphosphonates, with denosumab as an alternative initial treatment and anabolic agents for those at very high risk.
Decisions should be individualised. The question is not medication or natural treatment. The better question is which combination of interventions gives this person the best chance of preserving bone, preventing fractures and staying independent. Sometimes that includes medication. Sometimes the focus is prevention and lifestyle. Often it is both.
The bigger picture
Try not to think about osteoporosis as simply a disease of old bones. Think of it as a reflection of your body’s relationship with movement, nutrition, hormones, muscle, metabolism, recovery, ageing and environment.
Your skeleton has been adapting to the life you have lived. That does not mean your past determines your future. It means your current habits are sending signals to your biology today. Which is good news, because it means there are things you can influence.
Bone health is not something you suddenly start caring about at 70. The foundation is built much earlier, through strength, muscle, physical activity, nutrition, healthy body composition, hormonal health, balance and recovery. These are not only strategies for treating osteoporosis. They are strategies for building a body that ages well.
The goal is not a better DXA scan. The goal is a body capable of carrying you through the decades ahead.
When to get evaluated
Speak with a qualified healthcare professional about bone health if you have:
- A previous fragility fracture
- A diagnosis of osteopenia or osteoporosis
- A family history of osteoporosis or hip fracture
- Early menopause
- Long term glucocorticoid use
- Significant height loss or changes in posture
- Recurrent falls
- Significant unexplained bone loss
- Conditions associated with malabsorption
- Other risk factors for low bone density or fracture
If you already have osteoporosis or have had a fragility fracture, do not delay evaluation because you feel well. Low bone density usually produces no symptoms until a fracture happens. The absence of pain is not the absence of risk.
The bottom line
Osteopenia and osteoporosis are important diagnoses. They should not be the end of the conversation.
A bone density number tells you something about your bones. It does not tell you everything about your fracture risk, and it certainly does not tell you why your bone health changed. A comprehensive approach looks past the DXA report to your history, fracture risk, strength, balance, nutrition, hormones, medications, digestive health and metabolic health.
Because your bones are not separate from the rest of you. They are part of you. And when we understand the whole system, we can do a much better job of protecting it.
Frequently asked questions
Is osteopenia the same as early osteoporosis?
Not exactly. Osteopenia describes bone density below the young adult reference range but above the osteoporosis threshold, generally a T-score between -1.0 and -2.5. It is a description of where you sit on a spectrum rather than a disease in its own right, and many people with osteopenia never go on to fracture. It is a signal to look at the wider picture, not a reason to panic.
Can you rebuild bone density once it is lost?
Bone is remodelled throughout life, so the balance between breakdown and formation can shift. How much density can be regained depends on the cause, your age, hormonal status, nutrition, loading and whether drug therapy is used. Preserving what you have and reducing fracture risk is often the more realistic and more useful goal than chasing a particular number on a scan.
Is calcium enough to protect my bones?
No. Calcium matters, but bone has a protein matrix and depends on protein, vitamin D, magnesium, vitamin K and adequate overall energy intake, as well as mechanical loading from movement. Calcium alone, without loading the skeleton and without adequate protein, is not a bone health strategy.
Should I take vitamin D for my bones?
It depends on you. The 2024 Endocrine Society guideline suggests against routine empiric supplementation in generally healthy adults aged 50 to 74, and against routine vitamin D testing in healthy adults, while supporting it in specific groups including adults over 75. If you have an established indication, low intake or little sun exposure, that is a different conversation. Decide it with a clinician rather than by default.
Is exercise safe if I already have osteoporosis?
Yes, with the right prescription. The International Osteoporosis Foundation recommends supervised, targeted programmes combining muscle strengthening, balance and coordination work, starting light to moderate and progressing with capability. People at high risk should avoid trunk flexion exercise and powerful twisting of the trunk, while trunk extension and abdominal stabilisation are considered safe.
Does a DXA scan tell me my fracture risk?
Only partly. A DXA measures bone mineral density. Fracture risk also depends on age, previous fractures, falls, strength, balance, medications, hormonal status and other conditions. That is why tools such as FRAX combine bone density with clinical risk factors to estimate ten year fracture probability.
Why did my bone density drop when I thought I was healthy?
Low bone density is usually silent until a fracture, and the causes are often gradual. Menopause, reduced loading, loss of muscle, inadequate protein or energy intake, medications such as glucocorticoids, thyroid or parathyroid problems, and malabsorption can all contribute. The diagnosis tells you what is happening. Working out why requires the history.
Next steps
If you have been given a diagnosis of osteopenia or osteoporosis and want to understand the whole picture rather than just the number, that is a conversation worth having properly. You can book a free 15 minute consult to talk through where your own risk factors sit and what is worth investigating first.
This article is for education. It is not medical advice, it does not establish a practitioner and patient relationship, and it is not a substitute for individual assessment. Decisions about medication, supplementation and exercise after a fracture or an osteoporosis diagnosis should be made with a qualified clinician who knows your full history.
Your life is your medicine.
If something here rang true for you, the next step is a conversation. Start with a free consult, then we can work on your baseline together.
Reviewed by Dr. Daniel Gonzalez, DC.
