Yes, bone density can be increased after 70. Bone is living tissue that keeps rebuilding itself throughout life, and the right treatment can tip the balance back toward building. Bone-forming medications can raise density measurably, other medicines can stop further loss, and exercise, calcium, and vitamin D support both. Just as important at this age, the same steps lower your risk of a fracture.
In my practice, I often meet people in their seventies and eighties who assume it is too late. It is not, and the benefits of acting are often greatest in exactly this age group, because fracture risk is highest.
What Happens to Bone After 70
Bone density, or bone mineral density, is the amount of mineral packed into a given area of bone. It is a good guide to bone strength. Throughout life, bone goes through remodeling: cells called osteoclasts remove old bone, and cells called osteoblasts lay down new bone.
Peak bone mass is reached in early adulthood. From middle age onward, removal gradually outpaces building. In women, the drop in estrogen at menopause speeds this up for several years; men lose bone more slowly but steadily. By 70, many people have lost enough to reach osteoporosis, a condition of weak, porous bones that break easily.
Other factors add to the loss in later life: less time outdoors and lower vitamin D, reduced calcium absorption from the gut, lower activity levels, and medicines such as long-term steroid tablets.
Measuring Your Starting Point: The DEXA Scan
Bone density is measured with a dual-energy X-ray absorptiometry (DEXA) scan, a quick, low-radiation test of the hip and spine. The result is given as a T-score, which compares your bone density with that of a healthy young adult.
| T-score | Category | What it usually means |
|---|---|---|
| -1.0 or higher | Normal | Healthy bone density for fracture purposes |
| Between -1.0 and -2.5 | Low bone mass (osteopenia) | Treatment depends on overall fracture risk |
| -2.5 or lower | Osteoporosis | Treatment usually recommended |
| -2.5 or lower plus a fragility fracture | Severe osteoporosis | Treatment strongly recommended; bone-building drugs often considered |
Your doctor will also estimate your overall fracture risk using factors such as age, previous fractures, family history, and steroid use. A repeat scan, typically after one to two years of treatment, shows whether density is holding steady or rising.
Checking for hidden causes of bone loss
Before starting treatment, doctors usually look for conditions that speed up bone loss and can be corrected. Simple blood tests check calcium, vitamin D, kidney and liver function, and thyroid hormone. In men, a low testosterone level may be relevant, and in some people tests for celiac disease, an overactive parathyroid gland, or multiple myeloma are considered.
Finding and treating one of these causes can make bone treatment work far better. It also explains why two people with the same T-score may be offered different plans.
Medications That Can Increase Bone Density
Medications are the most powerful tool for changing bone density after 70. They fall into two broad groups.
Anti-resorptive drugs: slowing the loss
These medicines slow the osteoclasts that break bone down. With less removal, ongoing formation can catch up, and density often rises modestly over the first few years.
- Bisphosphonates, such as alendronate and risedronate taken by mouth, or zoledronic acid given as a yearly infusion.
- Denosumab, an injection every six months. It should not be stopped without a follow-on plan, because bone loss can rebound quickly after the last dose.
- Selective estrogen receptor modulators (SERMs), such as raloxifene, mainly used for spine protection in women.
Anabolic drugs: building new bone
These medicines actively stimulate osteoblasts to form new bone, and they produce the largest gains in density.
- Teriparatide and abaloparatide, daily injections related to parathyroid hormone.
- Romosozumab, a monthly injection that both builds bone and slows breakdown. It is not suitable for people with a recent heart attack or stroke.
Anabolic drugs are used for a limited period and are then followed by an anti-resorptive medicine to hold on to the gains. Every option has side effects and suitability questions, so the choice is made with your doctor.
Calcium, Vitamin D, and Protein
Medications work best when the building materials are available. Widely used guidance suggests about 1,200 mg of calcium a day for women over 50 and men over 70, ideally mostly from food, and around 800 IU of vitamin D a day for adults over 70. Your doctor may check your vitamin D level and suggest a higher dose if it is low.
Good calcium sources include dairy products, calcium-set tofu, canned fish with soft bones, fortified plant milks, and some leafy greens. Adequate protein also matters, because it supports both bone and the muscles that protect you from falls. For more strategies at any age, see our article on whether bone density can be improved.
Exercise and Fall Prevention
Bone responds to load. Weight-bearing exercise such as brisk walking and resistance training with bands, weights, or body weight signal bone to strengthen. Exercise alone produces smaller density changes than medication, but it improves muscle strength and balance, which directly cut fracture risk.
At this age, most hip and wrist fractures follow a fall, so preventing falls is as important as building bone:
- Balance training such as tai chi or supervised programs.
- Removing loose rugs, adding grab bars, and improving lighting at home.
- Regular eye checks and a review of medicines that cause dizziness.
- Sturdy, well-fitting footwear.
If you already have osteoporosis or a spinal fracture, ask for a physiotherapist’s guidance to avoid heavy forward bending and twisting.
Key Takeaways
- Bone density can be increased after 70, especially with bone-building medications.
- A DEXA scan gives your starting T-score and tracks progress.
- Calcium, vitamin D, protein, and regular exercise support any treatment.
- Preventing falls is essential for protecting bones at this age.
- Never stop denosumab or other bone treatments without a plan from your doctor.
Frequently Asked Questions
Is it too late to start osteoporosis medication at 80?
No. Fracture risk rises steeply with age, so older adults often gain the most from treatment. Your doctor will weigh kidney function, other illnesses, and your preferences when choosing a medicine.
Can exercise alone reverse osteoporosis after 70?
Exercise helps maintain bone and greatly reduces falls, but on its own it rarely moves a person out of the osteoporosis range. It works best alongside medication when treatment is recommended.
How long does it take to see an improvement in bone density?
Changes in bone are slow. Doctors usually repeat a DEXA scan one to two years after starting treatment, and the reduction in fracture risk can begin before large density changes show up.
Are calcium supplements safe for older adults?
Calcium from food is preferred. Supplements can fill a gap but may cause constipation, and very high intakes can raise kidney stone risk, so aim for the recommended total rather than more.
