Bone is living tissue. It responds to what you ask of it. After fifty, the balance tips: breakdown starts to outpace buildup. For women, the drop in oestrogen at menopause accelerates it. For men, the decline is slower but catches up by seventy. The result — osteoporosis — means bones that break from a minor fall. A hip fracture at seventy-five changes everything. One in two women and one in five men over fifty will break a bone because of it. The quiet version: you have more control than you think.
How bone works after fifty
Bone remodels constantly. Osteoclasts resorb old bone; osteoblasts lay down new. Up to about thirty, formation wins. After that, resorption slowly pulls ahead. By fifty, most of us are losing 0.5–1% of bone mass per year. Post-menopausal women can lose 2–3% per year for the first five to ten years. The spine, hip, and wrist go first — the places a fall hits hardest.
This is not inevitable decline. Bone adapts to mechanical load. When muscle pulls on bone, the strain signal tells osteoblasts to get to work. No load, no signal. The modern sedentary life — desk, car, sofa — is the real enemy. The fix is not complicated, but it does require showing up.
Know your number: the DEXA scan
A DEXA (dual-energy X-ray absorptiometry) scan is the gold standard. It gives you a T-score: how your density compares to a healthy young adult of the same sex.
- T-score ≥ -1.0: Normal
- T-score -1.0 to -2.5: Osteopenia (lower than normal, not yet osteoporosis)
- T-score ≤ -2.5: Osteoporosis
In the UK, DEXA is not routine screening. NICE guidance says offer it if you have a risk factor: previous low-trauma fracture, family history of hip fracture, long-term oral corticosteroids (three months or more), early menopause (before 45), low BMI (under 19), smoking, excess alcohol (more than 14 units a week), rheumatoid arthritis, coeliac disease, or certain other conditions. Ask your GP. If you do not qualify, you can self-refer privately — typically £80–150. A baseline scan at fifty gives you a reference point; repeat at two-to-three-year intervals if you have osteopenia, longer if normal.
Nutrition: the raw materials
Calcium: 700mg a day, food first
The UK reference nutrient intake is 700mg daily. That is achievable from ordinary food without supplements:
- 200ml semi-skimmed milk — 240mg
- 125g plain yogurt — 150mg
- 30g cheddar — 200mg
- 100g tinned sardines (with bones) — 380mg
- 100g firm tofu (calcium-set) — 200–350mg (check label)
- 80g cooked kale — 120mg
- Two slices white bread (fortified) — 100mg
A glass of milk, a pot of yogurt, and a small piece of cheese gets you there. If you do not eat dairy, you need to be more intentional: fortified plant milks, calcium-set tofu, tinned fish with bones, leafy greens, almonds. Supplements have a place if diet truly cannot deliver, but discuss with your GP — high-dose calcium supplements (over 1000mg/day) have been linked in some studies to increased cardiovascular risk. Food does not carry that signal.
Vitamin D: the enabler
Calcium cannot absorb without vitamin D. UK sunlight is insufficient October to March. SACN recommends 10µg (400 IU) daily for everyone over four, year-round. Over fifty, many clinicians suggest 25–50µg (1000–2000 IU) of D3, especially if you have limited sun exposure, darker skin, or carry extra weight (vitamin D sequesters in fat). Test if unsure; NHS will test if you have symptoms or risk factors. Pair D3 with K2 (menaquinone-7, 100–200µg) to direct calcium into bone rather than arteries.
Protein: the scaffold
Bone is roughly 50% protein by volume (collagen). The same protein target that supports muscle — 1.2g per kg bodyweight if you train — supports bone. Low protein intake is a fracture risk factor. See the protein guide for practical food examples.
Other nutrients that matter
- Magnesium (300–400mg): activates vitamin D, part of bone mineral. Greens, nuts, seeds, dark chocolate.
- Vitamin K2 (as above): activates osteocalcin, the protein that binds calcium in bone. Hard cheese, natto, egg yolks, liver.
- Zinc (9.5mg men, 7mg women): bone formation. Meat, shellfish, legumes, seeds.
- Potassium (3500mg): reduces calcium loss in urine. Fruit, veg, potatoes, beans.
Training: the signal
Bone adapts to strain. The strain must be:
- Progressive — heavier or harder over time
- Unusual — different from daily loading
- Site-specific — loads the skeleton where you need it
Swimming and cycling are excellent for heart and joints, but they are non-weight-bearing — they do not load bone. Walking loads the legs and hips but not the spine or wrists. You need resistance training and impact.
The Prime bone protocol (two sessions a week)
Session A — Lower body & spine
Goblet squat or front squat — 3×8–10
Romanian deadlift — 3×8–10
Walking lunge — 3×10 per leg
Step-up onto box (controlled down) — 3×8 per leg
Farmer carry — 3×30m
Session B — Upper body & impact
Push-up (elevated if needed) — 3×8–12
Dumbbell row — 3×10 per arm
Overhead press — 3×8–10
Band pull-apart — 3×15
Impact finisher: 3×10 pogo hops (stiff ankles, minimal knee bend) OR 3×5 step-downs from 12–18 inch box
Start light. Learn the movement. Add load weekly. If you have osteopenia or osteoporosis, avoid spinal flexion under load (no crunches, no round-backed rows), skip high-impact if T-score ≤ -2.5, and get a physio or qualified coach to check your form. The goal is to load the skeleton safely, not to chase numbers.
Lifestyle levers
- Stop smoking. Smoking reduces osteoblast activity and oestrogen. It is the single most damaging modifiable factor.
- Alcohol within limits. More than 14 units a week impairs bone formation and increases fall risk.
- Fall-proof your home. Loose rugs, poor lighting, trailing cables, no grab rails in the bathroom — most hip fractures happen at home.
- Review medications. Long-term corticosteroids, PPIs (proton pump inhibitors), some antidepressants, and certain epilepsy drugs affect bone. Never stop a prescribed drug without your GP; ask for a review.
- Sleep. Chronic short sleep (under six hours) is linked to lower bone density. The mechanism is likely cortisol and growth hormone disruption.
When medication enters the conversation
If your T-score is ≤ -2.5, or you have osteopenia with a high FRAX score (10-year major fracture risk ≥ 10% or hip fracture risk ≥ 1%), NICE recommends bisphosphonates (alendronate first-line) as the initial pharmacological option. They work by slowing osteoclasts. Side effects exist (GI upset, rare osteonecrosis of the jaw, atypical femoral fracture after very long use) but the absolute fracture reduction is substantial — roughly 40–50% for vertebral fractures, 20–30% for hip. Other options (denosumab, raloxifene, teriparatide, romosozumab) exist for specific situations. This is a conversation with your GP or a rheumatologist. Medication does not replace training and nutrition; it buys you time while they work.
A note on men
Osteoporosis is framed as a women's condition. It is not. One in five men over fifty will suffer an osteoporotic fracture. Men are less likely to be screened, less likely to be treated, and have higher mortality after hip fracture. The risk factors are the same: low testosterone, steroids, alcohol, smoking, low weight, family history. If you are a man over fifty with any risk factor, ask for a DEXA. Do not wait for a fracture to be your first clue.
Putting it together: your weekly bone checklist
- Two resistance sessions (progressive, compound, site-specific)
- One impact session (pogos, step-downs, skipping — if joints allow)
- Daily calcium 700mg from food (track for a week to learn your baseline)
- Daily vitamin D3 25–50µg + K2 100–200µg (year-round)
- Protein 1.2g/kg if training (see protein guide)
- Magnesium 300–400mg from food
- Alcohol ≤ 14 units/week, no smoking
- Fall-proof the house
- DEXA baseline at fifty, repeat per risk profile
Your skeleton is the frame that holds your independence. It asks for load, nutrients, and time. You give it those things, it gives you the capacity to keep doing what matters. That is the deal. It is a good deal.