Osteoporosis
Silent bone loss until something breaks
What it is
Osteoporosis is loss of bone mass and deterioration of bone microarchitecture, producing bones that fracture from forces that should not break them — a fall from standing height, or sometimes less. It is silent: there are no symptoms until a fracture occurs.
Why it matters
Fragility fractures are devastating and under-treated. A hip fracture carries a substantial risk of death within a year and frequently ends independent living. Yet the majority of people who suffer a fragility fracture are never started on treatment that would prevent the next one — an enormous, well-documented treatment gap. Meanwhile the supplements most people rely on to protect their bones have been tested and do not prevent fractures in well-nourished adults.
What BioSignal knows about treating this
What works for Osteoporosis
BioSignal’s clinical summary, most important first.
- Bisphosphonates — first-line, strong evidence for reducing fractures, and inexpensive
- Denosumab (note: must not simply be stopped — rebound bone loss and vertebral fractures can follow)
- Anabolic agents (teriparatide, abaloparatide, romosozumab) for severe or very high-risk disease
- Menopausal hormone therapy prevents bone loss (see the MHT record)
- Resistance and impact exercise — bone responds to load
- Adequate — not excessive — calcium and vitamin D as ADJUNCTS to treatment, not as treatment
- Falls prevention: balance training, medication review, vision, home hazards
Signal Records relevant to this condition
Interventions and contributing factors — some of these records describe a cause rather than a cure. The rating shown is BioSignal’s confidence in that Signal Record, not a claim about how well it treats this condition. Open any of them for the full evidence.
- Menopausal Hormone TherapyHigh confidence
The most effective treatment for menopausal symptoms. For most women under 60, benefits outweigh risks — and the risks have been overstated for two decades.
- Vitamin DHigh confidence
Effective for deficiency and for bone health in at-risk groups. For broad disease prevention in adults who are already replete, the largest trials are null — and confidence in that null is high. Routine testing of healthy adults is not supported.
- Vitamin K2Limited evidence
A beautiful mechanism that failed in trials. K2 did not slow arterial calcification when tested. Dangerous with warfarin.
- Whey ProteinHigh confidence
Works — for muscle, strength and recovery — but almost entirely by helping you hit a total daily protein target you could also hit with food. The feared harms (kidney, liver, bone) are not supported in healthy people. It is a convenience, and a good one, not a special substance.
- LevothyroxineHigh confidence
Highly effective for overt hypothyroidism. Frequently over-prescribed for subclinical disease, where trials show no symptom benefit.
- BoronLimited evidence
Not established as essential. The testosterone claim is a change in hormone binding, not a demonstrated benefit — from studies far too small to conclude from.
New to this? Read these first
How this usually unfolds
- Recognize risk factors
- Get diagnosed
- Track key biomarkers
- Lifestyle first
- Evidence-based treatment
- Long-term monitoring
Who is at risk
- Older age
- Female sex, and menopause (oestrogen loss accelerates bone loss sharply)
- Previous fragility fracture (the strongest single predictor of the next one)
- Family history of hip fracture
- Long-term corticosteroid use
- Smoking and excess alcohol
- Low body weight
- Physical inactivity
- Over-replacement with levothyroxine; some other medications
How it's diagnosed
Osteoporosis is diagnosed by DXA bone-density scanning — a T-score of −2.5 or below at the hip or spine. But bone density is only part of the picture: fracture risk calculators such as FRAX incorporate age, prior fracture, steroids, smoking, and other factors, and a person can be at high fracture risk without meeting the density threshold. A fragility fracture itself is often sufficient to warrant treatment regardless of the scan.
Key biomarkers
Lifestyle
Explore this condition across BioSignal
Related Foundations
Related Signal Records
Frequently asked questions
Don't calcium and vitamin D supplements prevent fractures?
This is one of the most widely held beliefs in bone health, and the evidence does not support it in the way people think. In well-nourished, community-dwelling adults, calcium and vitamin D supplementation has NOT been shown to meaningfully reduce fractures — large meta-analyses are consistent on this. That does not make them useless: correcting genuine deficiency matters, and they are appropriate ADJUNCTS alongside actual osteoporosis treatment. What they are not is a substitute for it. Many people at high fracture risk take calcium and vitamin D, believe themselves protected, and are not.
I've broken a bone from a minor fall. What now?
Take it extremely seriously — this is the single most important moment in the whole condition. A fragility fracture is the strongest predictor of the next one, and the period immediately afterwards is when risk is highest and treatment does the most good. Yet most people who fracture are never started on treatment. If you have had a fracture from a fall from standing height, ask specifically about assessment and treatment. Do not let it be treated as bad luck.
Aren't bisphosphonates dangerous? I've heard about jaw problems.
The fear is far out of proportion to the risk, and it is preventing effective treatment. Osteonecrosis of the jaw and atypical femoral fractures are real but rare — and they are dramatically outnumbered by the fractures these drugs prevent in people at genuine risk. For someone with osteoporosis, the risk of NOT treating is substantially higher than the risk of treating. That said, the conversation should be had with your clinician, and treatment duration is reviewed rather than indefinite.
Can osteoporosis be prevented?
To a meaningful extent, yes — bone is living tissue that responds to what you do. Resistance and impact exercise build and maintain bone. Adequate protein and nutrition matter. Not smoking and limiting alcohol matter. Peak bone mass is largely built by early adulthood, so the earlier the better — but exercise continues to protect bone at every age, and it also prevents the falls without which fragile bones do not break.
Evidence summary
Bisphosphonates have strong randomised evidence for reducing vertebral, non-vertebral, and hip fractures, and are inexpensive first-line therapy. Denosumab and anabolic agents are effective, with denosumab requiring careful transition rather than abrupt cessation. Menopausal hormone therapy prevents bone loss. Resistance and impact exercise improve bone density and reduce falls. Calcium and vitamin D supplementation in well-nourished community-dwelling adults has NOT been shown to meaningfully reduce fractures, though correcting deficiency remains appropriate. A very large treatment gap exists after fragility fracture.
References & sources
- Endocrine Society and AACE clinical practice guidelines on osteoporosis
- NOGG / NICE guidance on fragility fracture risk assessment
- Bisphosphonate fracture-reduction randomised trials
- Meta-analyses of calcium and vitamin D supplementation and fracture risk in community-dwelling adults
Educational information — not medical advice
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