The framing of osteoporosis as a problem of older women has caused two parallel mistakes: men assume it doesn’t apply to them, and women in their 40s and 50s assume it can wait. Neither is right.
Bone density peaks in the early 30s. From there, it slowly declines. After menopause, women lose bone density faster for several years. Men lose it more gradually but reach the same fracture risk eventually — just later.
The clinical question isn’t whether you’ll lose bone density. You will. The question is whether you’ll cross the threshold into clinically significant osteoporosis, and that’s heavily influenced by what you do in your 40s, 50s, and 60s.
Why fractures matter beyond the obvious
A hip fracture in someone over 65 is not just a fracture. The 1-year mortality after hip fracture is around 20–30%. Many patients never return to their previous level of independence. Vertebral fractures cause chronic pain, height loss, and breathing difficulties.
Risk factors
Bigger factors:
- Age (cumulative)
- Female sex, particularly post-menopause
- Family history of osteoporosis or fracture
- Low body weight (under 60 kg / 132 lbs in adulthood)
- Smoking and heavy alcohol use
- Long-term corticosteroid use
- Certain medical conditions — celiac, hyperthyroidism, hyperparathyroidism, malabsorption
- History of low-trauma fracture in adulthood
Smaller but real factors:
- Sedentary lifestyle
- Inadequate calcium and vitamin D over years
- Eating disorder history
- Late menarche or early menopause
What protects bone
Three things have the strongest evidence:
Resistance training
Lifting weights — and walking with weights, doing squats with weights, deadlifts with proper form — is the most powerful bone-strengthening intervention available. The bone remodels in response to mechanical load. Two sessions a week of meaningful resistance training is a reasonable target.
Walking is good for cardiovascular health but doesn’t load the spine and hips enough to be a strong bone signal. The patients with the strongest bones in their 70s are usually the ones who kept lifting through their 50s and 60s.
Adequate protein
Bone is roughly half protein by volume. Inadequate protein intake undermines bone repair. 1.0–1.2 g per kg body weight per day is a reasonable floor for most adults; higher for older adults.
Calcium and vitamin D — adequately, not excessively
Both matter, but more isn’t better. The targets:
- Calcium: 1,000–1,200 mg per day from food sources preferred. Dairy, leafy greens, fortified foods, sardines, tofu
- Vitamin D: 800–2,000 IU per day for most adults; higher in some cases
Bone density testing
A DEXA scan measures bone density at the hip and spine. The result is reported as a T-score:
- Above -1.0: Normal
- -1.0 to -2.5: Osteopenia (low bone density)
- Below -2.5: Osteoporosis
When to consider testing:
- Women age 65+, men age 70+ — recommended baseline
- Earlier with risk factors — postmenopausal women with risk factors, men 50–69 with risk factors
- Anyone who has had a low-trauma fracture as an adult
- Long-term corticosteroid users
When medication enters the picture
For osteoporosis with significant fracture risk, medications can substantially reduce fractures. Bisphosphonates are the most common first-line option. Newer medications (denosumab, romosozumab, teriparatide) are available for higher-risk situations.
The decision involves weighing your specific fracture risk against medication side effect profile — a calculation your clinician can walk you through using validated tools like FRAX.
The takeaway
Osteoporosis is preventable for most people, treatable when it develops, and highly consequential when it causes fractures. The interventions that work are unglamorous and effective. Don’t wait until your 70s to think about your bones.
