Understanding bone health — beyond density.
The scans that see more — and the causes that get missed: hormones, body weight, iron, and the daily rhythm of light and sleep. A plain-language guide that keeps the science intact. Written with women at the center; useful to everyone.
This guide · Written by Josi Clary, health coach · Author’s last review: October 5, 2026 · Independent clinical review: not yet complete · How this is made →
Honest about the evidence
Throughout, every claim is tagged so you can tell solid ground from open questions.
Strong, repeated evidence in humans. You can rely on this.
A real mechanism with growing support, but the human evidence is still incomplete. Reasonable to act on the low-risk parts.
Genuine support and active scientific disagreement. Worth knowing and using thoughtfully — not yet the final word.
Menopause changes bone fastest
After menopause, the drop in estrogen makes women lose bone faster than men, and women face more fragility fractures over a lifetime. So this guide foregrounds the female experience — menopause, estrogen, very low body weight.
Where a point applies equally to men, you'll see this marker — and the biology, including the iron and hormone stories, is shared by both. Up to 1 in 4 men over 50 will fracture from fragile bone.
Bone health is more than “density”
Density tells you how much bone there is. It does not tell you how well that bone is built — the honeycomb lattice inside, the protein scaffolding, the overall shape. Quality, not just quantity, decides whether a bone breaks.
Same mineral, very different strength
The green dots (mineral) stay the same — so density is constant. Only the internal architecture changes. Drag to rebuild the lattice, then press load.
This is why relying on density alone misses most of the people who eventually fracture — around 70–75% of fragility fractures happen to people who aren’t “osteoporotic” on a scan — and why the newer scans that measure quality (Section 3) have drawn so much interest.
“Density tells you how much bone there is. Quality tells you whether it will hold.Aim to understand both.”
How your bones actually work
Bone is not dead scaffolding — it's living tissue, constantly torn down and rebuilt in a process called remodeling. Almost every cause of osteoporosis works by tipping one balance.
The daily balance
Builders (+) lay down bone; removers (–) clear it. Choose a cause and watch it tip the same scale.
Builders and removers keep pace. Bone is maintained.
Seeing what DEXA misses
If bone strength is about quality as well as quantity, then how we measure bone matters enormously. Here are the main tools — from the familiar standard to the newer technologies — with REMS in depth.
Why DEXA can read “falsely reassuring”
A flat X-ray adds up everything in its path. Toggle the artifacts and watch the DEXA spine score inflate — while REMS, reading echoes rather than an X-ray shadow, is designed to be less affected by them. Spinal arthritis is the artifact that reliably inflates; aortic calcium’s effect varies and is often small. REMS has limits of its own: its readings are model-assisted estimates that lean on age, sex and body size, and depend on operator technique.
The honest counterweight: DEXA remains the diagnostic gold standard, and most physicians won’t change medication on REMS alone. REMS is best used as a complement — especially where arthritis, calcification, or very low body weight make DEXA least reliable — and a 2025–2026 debate questions how much of a REMS reading is measured versus modeled from age and weight (Osteoporos Int editorial).Promising / debated
At a glance: how the main tools compare
| Feature | DEXA | TBS | REMS |
|---|---|---|---|
| Main output | Density, T-score | Texture add-on | Density + Fragility Score |
| Quality info? | Limited | Yes (texture) | Yes (Fragility Score) |
| Radiation | Low-dose X-ray | Uses DEXA image | None (ultrasound) |
| Sites | Spine, hip | Spine | Spine, hip |
| Fooled by artifacts? | Yes (often) | Partly | Less affected* |
| Portable? | No | — | Yes |
| Status | Gold standard | Accepted add-on | Promising, debated |
| Best role | Diagnosis & treatment | Refine risk | Complement; artifact / thin cases |
*REMS is designed to reduce the influence of certain artifacts, but acquisition quality, operator technique, and device-specific validation still matter. TBS is a DXA-derived texture index associated with bone microarchitecture, and REMS is a complementary assessment — both refine risk rather than replace DEXA, and neither is yet established as a routine monitoring test. The richest picture combines a DEXA (diagnosis) with a texture/quality adjunct (TBS and/or REMS's Fragility Score) and a FRAX risk estimate. These tools are layers, not rivals.
The full picture beats a single number
This is the idea Josi is most excited about: don't settle for one test. She's in favor of layering REMS + DEXA + biomarkers + movement together — quantity, quality, risk, root causes, and function — for the clearest, safest read on your bones.
See the whole picture, not one number
No single test tells the whole story. Layer the lenses together — the way Josi believes bone health should be assessed — and the picture gets clear.
These tools are layers, not rivals. DEXA remains the diagnostic standard; REMS and TBS add the quality density misses; FRAX frames the risk; biomarkers reveal the root causes; movement decides the outcome. Bring the whole picture to your doctor.
Dr. Vonda Wright is featured here for educational and informational purposes. Her name is used descriptively and this does not imply her endorsement, sponsorship, or affiliation. Josi Clary Coaching is independent of, and not affiliated with, Dr. Wright or the Buck Institute.
What weakens bone — including the overlooked
The familiar causes are real: estrogen loss after menopause (and low testosterone in men), aging, too little calcium/vitamin D/protein or loading, and certain medications. But two causes rarely make the standard conversation — and both can be missed for years.
Excess iron attacks bone three ways at once
The body needs iron, but too much is toxic to bone — and the science behind why matured sharply in just the last two years.
Hereditary hemochromatosis affects roughly 1 in 300 people of Northern European descent (two copies of the HFE C282Y variant). Most people with the genotype never develop iron-overload disease — about 28% of men and 1% of women do — but among people with diagnosed hemochromatosis, studies find osteoporosis in roughly a quarter to a third, and it is often missed for years. A simple, inexpensive blood panel — ferritin and transferrin saturation (plus HFE genetic testing if high) — can reveal a cause of bone loss that would otherwise go unexplained for years.♂ Often affects men earlier
Why being very thin carries its own risk
Most conversation about weight focuses on carrying too much. For bone, the opposite end deserves equal attention. Being significantly underweight is a well-established, independent risk factor for fracture — several forces, all pushing one direction.
After menopause, body fat is a main source of estrogen. Very thin means little of this protective tissue.
Less body weight means a weaker daily 'build' signal to bone.
Low weight tracks with muscle loss — more falls, and less cushioning over the hip when one happens.
You cannot build strong bone without enough protein, minerals, and energy.
Fat tissue makes hormones such as leptin that appear to support bone; very low fat means low levels.
In a very lean person a DEXA score can understate true risk. A number that looks "not too bad" shouldn't be falsely reassuring — exactly where a quality measure (TBS / REMS) and FRAX add value.
If you're younger and very lean
Bone built before about 30 is the balance you draw on for life. In a younger woman, missed periods for three months or more, a past eating disorder, or a stress fracture are red flags for low energy availability — the body turning down its hormones because it is not getting enough fuel. Sports medicine calls it RED-S (relative energy deficiency in sport), but it needs no sport. It harms bone at any age, and it is treatable. Raise it explicitly: ask whether a DXA read as a Z-score (a comparison with your own age group, not with a young adult) and a hormone and nutrition review are appropriate. A "you're too young for a bone problem" answer is not the end of the conversation.
Estrogen & the menopause window
Because estrogen keeps the remover cells in check, the menopausal drop is the single biggest reason women lose bone rapidly in the years right after menopause — the window where protection matters most.
The menopause window
Estrogen falls first; bone density follows, fastest in the early years after menopause. Drag across the timeline, or use the slider.
Established This is why hormone-based approaches exist — and why the timing and delivery of any therapy is a careful, individualized conversation with a physician.♂ In men, low testosterone acts similarly
Menopausal hormone therapy reliably preserves bone and reduces fractures. Whether it suits you depends on age, time since menopause, history, and delivery — a decision to make with a physician, not from a guide.
Delivery route matters: transdermal (patch/gel) and oral estrogen differ in risk profiles, and FDA-approved "body-identical" hormones differ from custom compounded preparations. Worth raising specifically.
Timing, and stopping
The balance of benefit and risk is most favorable when hormone therapy is started before 60 or within 10 years of menopause; a later start needs a more careful case. The protection lasts while you take it — bone loss resumes after stopping — so a stopping plan should include a bone plan. Early or premature menopause (before 45, and especially before 40) is a strong reason to raise hormone therapy for bone specifically.
In November 2025 the FDA announced it would remove the broad boxed warnings from menopausal hormone products (an endometrial-cancer warning stays on estrogen-only systemic products) and rewrite labels with age-specific guidance. It changes the label, not the individual decision.
Tested less, hit harder
Men lose bone later and more slowly, so the subject rarely comes up — which is exactly why it has to be raised.
- Who should be tested. The Endocrine Society recommends a DXA for men 70 and older, and for men 50–69 with a risk factor: low body weight, a fracture as an adult, smoking, heavy alcohol use, steroid (glucocorticoid) use, low testosterone, an overactive parathyroid or thyroid, COPD, or androgen-deprivation therapy for prostate cancer. The 2025 USPSTF review grades screening in men "I" — evidence insufficient either way — so it is often not offered unless you ask.
- Why fractures hit men harder. Men break bones about a decade later than women on average, and the aftermath is worse: the year after a hip fracture carries higher mortality in men, and men are less likely to be evaluated or treated for the bone problem that caused it.
- Look for a cause. In men a secondary cause turns up more often, so the work-up matters: testosterone (hypogonadism), alcohol, glucocorticoids, androgen-deprivation therapy — plus the shared list of vitamin D, calcium, kidney and thyroid function, and iron studies where history suggests it (hemochromatosis tends to affect men earlier).
- The same stopping rules apply. Denosumab, bisphosphonates and the bone-building drugs are used in men too, with the same hand-off and review cautions described in the Treatment section below.
The common thread: oxidative stress
Excess iron, the loss of estrogen, ordinary aging, and a disrupted body clock all converge on one thing inside bone: oxidative stress — a kind of internal "rusting." Much of what protects bone works by keeping this fire low.
One shared hub ties the causes together
Toggle each cause. Separate-seeming problems feed the same fire — and much of what protects bone works by keeping that fire low.
Diet: what genuinely helps
For someone underweight, the priorities flip from the usual "eat less" messaging. The dominant problem is shortage, not excess.
Enough total food
For a very thin person, simply eating enough so the body isn't breaking down its own muscle and bone comes before everything else.
Protein
Bone is roughly half protein by volume. Aim higher than the minimum — about 1.0–1.2 g per kg (≈ 0.45–0.55 g per lb) of body weight daily, spread across meals.
Calcium & vitamin D
The foundation: vitamin D lets the body absorb calcium, and correcting a real deficiency clearly helps. But adequacy is the goal — for most adults that's 1,000–1,200 mg of calcium a day, food first — and routine high-dose supplements beyond it don't automatically prevent fractures. More isn't better.
Estimate your intake ↓Supporting cast
Magnesium; vitamin K (involved in the proteins that regulate bone mineralization — though evidence that K2 supplements prevent fractures is still mixed, and K can interact with warfarin); and adequate — not excessive — vitamin A.
This is the single most important caution in the guide. A thin, tired older person is often told to "build up" with iron-rich red meat and vitamin C. But if that person has iron overload, this advice flips and becomes harmful to bone. So don't start iron just because you feel tired or look underweight — ask whether iron deficiency, iron overload, or neither has actually been established. Dietary iron restriction and avoiding vitamin C supplements are generally reserved for people with confirmed or strongly suspected iron overload, under clinical guidance — ordinary vitamin C intake isn't inherently risky for most people. The point: before supplementing iron, confirm whether iron deficiency actually exists — ask whether ferritin, transferrin saturation, and related evaluation are appropriate for your situation.
Roughly how much calcium do you get?
An estimate, not a measurement — food values are approximate and portions vary. The point is to see whether you are in the right neighbourhood, food first, before anyone reaches for a pill.
Your daily target
Servings on a typical day
Baseline allowance included: about 250 mg for everything else in a typical day — bread, grains, vegetables, water, odds and ends — an assumption most published calculators make. Turn it off above if you would rather count only what you have listed.
Established Adults need about 1,000–1,200 mg a day, food first. Supplements are for closing a real gap, absorbed best at ≤500–600 mg per dose (carbonate with food; citrate any time) — and the upper limit counts food and supplements together. Promising / debated Some meta-analyses have linked high-dose calcium supplements to more heart events; others found none, and a 2016 joint position from the National Osteoporosis Foundation and the American Society for Preventive Cardiology concluded that intake within the upper limit, from food or supplements, is not tied to heart risk. Another reason the extra pill is a conversation, not a reflex.
Established The recommended intake is 600 IU a day to age 70 and 800 IU from 71. The 2024 Endocrine Society guideline suggests against routine vitamin D blood tests in healthy adults, against routine supplementing above those amounts under 75, and for a modest daily supplement (daily, not occasional large doses) from 75. Being evaluated for osteoporosis is a different situation: a 25-hydroxy vitamin D level is commonly part of that work-up — see the secondary-causes guide.
Loading is signal; light is fuel
Bone strengthens when loaded — and one light–bone link is rock-solid while others are still unsettled. Keep them separate, and load safely.
Sunlight → vitamin D
UVB lets the body make vitamin D, essential for absorbing calcium and mineralizing bone. For many indoor or frail people, a supplement is the practical route.
Your body clock
Bone turnover follows a 24-hour rhythm; disrupting it (shift work, poor sleep, light at night) is linked to worse bone. Get morning daylight; keep nights dark.
Wavelength protocols
Claims that specific light "powers" bone beyond vitamin D are unproven. Take the curiosity seriously; hold the specific prescriptions loosely.
Load becomes signal
Deform bone and it generates faint electricity; the embedded cells read it as a cue to build. It's part of why loading tells bone to keep itself strong.
Established Weight-bearing and progressive strength training signal bone to maintain and build itself. Promising / debated Some vibration and electrical therapies aim to tap this same language — worth watching, not yet settled.
Impact → bone signal
Bone listens to peak force, not minutes. A few crisp landings can cross a threshold that hours of gentle activity never reach.
Impact and heavy resistance are powerful for bone — but if you have low bone density, a prior fracture, or you're frail, this belongs in a supervised, progressive program cleared by your physician or physiotherapist. Balance training and removing home fall-hazards matter just as much: many fractures are a fall problem as much as a bone problem. What that program looks like ↓
From signal to plan: what to actually do
Two consensus documents — the UK Royal Osteoporosis Society's Strong, Steady and Straight statement and Osteoporosis Canada's Too Fit to Fracture — agree on the shape of a bone-safe program. Established They agree most firmly on what prevents falls; the evidence that exercise alone prevents fractures is thinner, and both say so. Treat these as questions to bring to the physiotherapist or physician who clears your program — not a prescription from this page.
Progressive resistance, two or three days a week
Every major muscle group, the back included — about 8–12 repetitions per set, getting gradually heavier over the weeks. Add impact (brisk walking, stairs, hopping or jumping) on most days where you have been cleared for it. After a vertebral fracture or several low-trauma fractures, guidance usually caps impact at brisk-walking level.
ROS consensus · Too Fit to Fracture
Balance on most days
Work that genuinely challenges your balance, 15–20 minutes a day in total, plus about 150 minutes a week of moderate aerobic activity in bouts of ten minutes or more. Tai chi, dance, and yoga or Pilates adapted to keep the spine long all count.
ROS consensus · Too Fit to Fracture
Five to ten minutes a day for the back
Back-extensor work most days, and a habit change the rest of the time: avoid repeated or end-range forward bending and twisting, in exercise and in daily life. Bend from the hips, not the waist.
ROS consensus · Too Fit to Fracture
Movements to adapt, not abandon
Picking things up, gardening, getting out of bed, sit-ups, toe-touches and deep forward folds all load the front of the vertebrae — the part that gives way in a compression fracture. Swap in a hip hinge(hips back, spine long, knees soft), log-roll onto your side before sitting up, and ask for spine-neutral versions of any exercise that bends you forward. The movement isn't the enemy; the repeated, loaded, end-range version is.
Heavier than you'd expect — under supervision
The Australian LIFTMOR trial (2018) took postmenopausal women with low bone mass through eight months of twice-weekly, 30-minute, closely supervised high-intensity resistance and impact training — lifts above 85% of their maximum plus an impact drill. Lumbar-spine density rose 2.9% against a 1.2% fall in the comparison group, with no new or worsening vertebral fractures and no serious adverse events (the one logged was a minor back spasm). It was one trial of 101 women, and the supervision is part of the result — this is not a licence to load a bar alone.
The program is licensed to clinics as Onero. To find professionals trained in bone-safe exercise, see Osteoporosis Canada's Bone Fit locator and BHOF's BoneFit USA directory.
Named for information only — Josi Clary Coaching is not affiliated with these programs, and a listing is not an endorsement.
The other half of the fracture equation
Most fragility fractures begin with a fall. Strong bone matters — and so does not hitting the ground. More than 1 in 4 adults over 65 fall each year, and what prevents it is cheap, low-risk, and well studied.
Balance & leg strength
Exercise that challenges balance and builds leg strength cuts falls by about a quarter (Cochrane 2019 — 108 trials, 23,407 people). The best-studied programs are Tai Ji Quan (roughly 31–58% fewer falls in trials) and the Otago home program (about 23–40%); combined strength-and-balance classes land around 20–45%. Two or three sessions a week, kept up — the benefit fades when the practice stops. If you have fallen in the past year or feel unsteady, ask for a falls assessment first.
Your home
A room-by-room check — rugs, lighting and night-lights, grab bars, stair rails, clutter, footwear — plus a yearly eye exam and a review of any medicine that makes you dizzy or drowsy. It pays off most after a fall, and when an occupational therapist does the walk-through with you. The checklist below follows the CDC's Check for Safety.
Hip protectors
In nursing and residential care, padded hip protectors probably prevent a small number of hip fractures — about 11 fewer per 1,000 people (Cochrane 2014, 19 trials) — and may slightly increase the small chance of a pelvic fracture. For people living at home, trials show little or no benefit, partly because few keep wearing them.
Home fall-hazard checklist
Walk each room and tap what you've checked. Nothing you tap leaves your browser.
0 / 10 donePrefer paper? The same checklist is a printable in the Advocacy Guide. Just had a fracture? Start with the post-fracture checklist — the first one to two years after a break are when the next one is most likely.
Questions & tests to raise with a doctor
None of this replaces a clinician who can see your actual numbers. But these are concrete, low-cost things you can ask about by name.
TBS (Trabecular Bone Score) re-reads your existing DEXA image to estimate bone-quality texture — no extra scan or radiation. If your center offers it, ask whether it would change your risk estimate — professional positions treat TBS as an add-on that matters most when you sit near a treatment threshold, not as a routine extra or a way to monitor change.
Especially where spinal arthritis, calcification or very low body weight make DEXA less reliable, and for its radiation-free Fragility Score. Use it to complement DEXA — it is not yet validated for tracking change over time, and not a basis for treatment decisions on its own.
It factors in low body weight and other risks that density alone misses — a clinical risk percentage over 10 years.
Plus HFE genetic testing (C282Y, H63D) if those are high or there's family history. Cheap, and they can change the whole plan.
A review of vitamin D level, calcium, and estrogen / testosterone. Relevant for men too, given the iron–hormone link.
Significant unexplained thinness can be the visible sign of something treatable (like nutrient malabsorption) that is also harming bone. A referral to a registered dietitian helps with safe weight and nutrition support.
Two levers: build more, or remove less
Medicines don't replace bone in a simple way — they tip the build-versus-remove balance to reduce fractures. A doctor matches the choice to the person's risk — and how long to stay on each, and how to step off safely, is part of the plan.
Antiresorptives
Bisphosphonates and denosumab slow bone breakdown — the long-standing backbone. Bisphosphonates are usually reassessed after a few years; denosumab (Prolia) is only ever stopped with a planned hand-off. Established
Anabolic agents
Teriparatide and abaloparatide actively stimulate new bone, usually for up to two years — then an antiresorptive keeps the gains. Established
Romosozumab
Builds bone and slows breakdown as a 12-month course, then an antiresorptive locks in the gains. Carries a boxed heart warning — cardiovascular history is reviewed first. Established
Established These are the cautions a careful prescriber raises — and the ones most often missed when a prescription quietly lapses.
- Denosumab (Prolia) should not be stopped, paused or delayed without a planned hand-off — usually to a bisphosphonate. Bone turnover rebounds within months of a missed dose, the gains are lost, and multiple spine fractures can follow. Since January 2024 its label also carries an FDA boxed warning for severe low calcium in people with advanced kidney disease, so kidney function and calcium are checked first.
- Bisphosphonates are reassessed after about 5 years (oral) or 3 years (yearly infusion). People no longer at high risk may be offered a monitored "drug holiday"; those still at high risk often continue longer. The rare jaw-bone and thigh-bone side effects are real but far less common than the fractures these drugs prevent.
- Romosozumab (Evenity) carries an FDA boxed warning for heart attack, stroke and cardiovascular death. It is not started within a year of either event, and it is a fixed 12-month course that must be followed by an antiresorptive.
- Bone-building drugs are a chapter, not the whole book. Teriparatide, abaloparatide and romosozumab are all followed by an antiresorptive — otherwise the new bone is lost again.
None of this is a reason to change anything on your own. If a dose is late, a refill lapsed, or you are thinking of stopping, that is the moment to call the prescriber — before the gap, not after.
Printable: questions before starting or stopping a bone medicine →On the horizon. Emerging Researchers are pursuing broader bone-formation pathways and treatments aimed at the iron / oxidative-stress process itself. In December 2025 the FDA qualified change in total-hip bone density as a surrogate endpoint for fracture in trials of postmenopausal women — the first for osteoporosis — which is expected to make new-drug trials smaller and faster. FDA, December 2025
A simple starting checklist
If you take nothing else from this guide, these steps capture the heart of it.
Tap each step as you go — a simple starting plan.
0 / 7 doneTurn what you know into what you ask for
Knowing the science is the start. The Advocacy Guide is the toolkit for acting on it: a personalized appointment checklist, printable packs for your appointment, the DXA quality checklist, the insurance denial toolkit, the after-a-fracture plan, and a medicines discussion guide. Print or save every section as a PDF to keep. Suggested donation $25 on Venmo; yours either way.
Free: the science, the Journal, the glossary, and the free guide. · Pay what you want (suggested $25): The Advocacy Guide. · $125/hour: Medical Advocacy sessions with Josi.
When you want a person in your corner, not just a printout
The Advocacy Guide (pay what you want) helps you prepare on your own. Josi's Medical Advocacy program is the one-to-one version. An hour at a time, she helps you turn seven prescriptions and three doctors into one list and one page, work out which questions matter most, find the specialist and the programs that fit, and walk into the appointment ready. Coaching, not medical care.
Do you speak bone?
Five questions drawn straight from the guide. Each answer teaches the idea behind it.
A DEXA scan measures how much mineral is in bone. What does that number NOT capture?
Longform, evidence-graded reporting
Josi's writing on the science behind the headlines.
The Fracture Factor
The scan we trust to catch fragile bones misses most of the people who break them. The reason is a line drawn thirty years ago for bookkeeping — and everything it leaves out.
The Weight Is Coming Off Faster Than Ever. Almost Nobody Is Watching the Bone.
A hormone discovered by accident in 1994 explains why the body fights weight loss so hard — and why the newest drugs that finally win that fight can quietly send the invoice to your skeleton.
Josi Clary
Integrative Nutrition Health Coach · certified by the Institute for Integrative Nutrition (2021)
Josi's aim is plain: give you a clear, well-researched understanding of your own body, so you can ask sharper questions and make better decisions about your health. As a health coach — not a physician — she helps you organize your history, understand your options, and prepare for the right conversation. She doesn't diagnose, interpret your scans, or prescribe; when something needs a clinician, she says so.
This resource grew out of her Understanding Bone Health guide — written with women at the center, because the menopausal years change bone the fastest, though it matters for everyone. It doesn't water down the science, and it says plainly where the evidence is solid and where it's still being argued over. No scare tactics, no hype.
The complete Understanding Bone Health guide
An illustrated, plain-language deep dive — the anatomy of strong bone, the scans that see more, the iron and hormone stories, and a simple starting checklist. Written for a real person, not a doctor, and honest about what the science does and doesn't yet know. It's Josi's gift to you.
- Evidence-graded: Established · Emerging · Promising/debated
- Centered on women's health — essential for men, too
- The exact questions and tests to bring to your own doctor
A global problem, still under the radar
Few diseases touch so many of us as we age — and most of it is silent until a bone breaks.
Help move mountains for women's health.
Josi supports Move the Mountain™, the Buck Institute's campaign, launched with Dr. Vonda Wright, to establish the Vonda Wright Women's Health Foundation at the Buck's Center for Healthy Aging in Women. Its research asks how the ovary shapes aging across the whole body — heart, brain, metabolism, immunity, hormones, and the bone, muscle, and mobility science this site cares most about.
- Funds research into the under-studied biology of the menopausal body
- Includes musculoskeletal aging — the why behind post-menopausal bone and muscle loss
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Give at the Buck Institute ↗Campaign facts from the Buck Institute's July 2026 announcement (stated goal: $79M). Details may change — see buckinstitute.org.
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Frequently asked questions about bone health
Not today. REMS density correlates strongly with DEXA and has been FDA-cleared since 2018, and a 5-year study found its Fragility Score predicted fractures. But an active 2025–2026 debate notes that much of REMS density variation can be explained by age and weight, and it's operator-dependent. DEXA remains the gold standard for diagnosis and treatment decisions. The fair takeaway: REMS is a valuable complement, especially where DEXA struggles.
Guidance for older adults at risk of frailty suggests aiming higher than the bare minimum — on the order of 1.0–1.2 grams per kilogram of body weight per day, spread across meals. Higher protein intake is linked with better density and fewer spine fractures over time. Bone is roughly half protein by volume.
One route is rock-solid: sunlight (UVB) lets your body make vitamin D, essential for absorbing calcium — for many indoor or frail people a supplement is the practical path. Beyond that, the body clock genuinely matters for bone (protect sleep, get morning daylight, keep nights dark), and melatonin looks protective in lab studies. But specific wavelength protocols and strong 'light powers your bones' claims are promising/debated — take the curiosity seriously; hold the prescriptions loosely.
Yes. The guide centers women because menopause changes bone fastest, but up to 1 in 4 men over 50 will fracture from fragile bone. Low testosterone accelerates loss, and the iron story (including hemochromatosis, which often affects men earlier) is shared by both. See 'For men, specifically' in the Hormones section for who should be tested and which causes to ask about.
Largely, yes — the protection lasts while you take it. After stopping, bone loss resumes at roughly the early-menopause pace for a couple of years, and a large UK primary-care analysis (Lancet Healthy Longevity, 2025) found fracture risk rising above that of never-users for about a decade after stopping — peaking around three years, then falling back and ending up lower than never-users beyond ten years, more so after longer use. That isn't an argument for staying on it indefinitely; it is an argument for a stopping plan that includes a bone plan — a DXA, a fracture-risk estimate, and a conversation about whether another bone medicine should follow. Decide that with the prescriber before the last dose, not after.
No. This is general education, designed to help you ask better questions and bring the right tests and topics to a qualified physician who can interpret your own numbers and tailor a plan to you. Evidence labels reflect the general state of research and may evolve.
This guide · Written by Josi Clary, health coach · Author’s last review: October 5, 2026 · Independent clinical review: not yet complete · How this is made →