Key Takeaways

Fracture risk, health status, and training history guide decisions about DXA and exercise. A midlife scan or a maximal lifting protocol does not apply to everyone.

The USPSTF recommends DXA-based screening for women 65 and older and for postmenopausal women younger than 65 who are at increased risk after clinical risk assessment. [1]
For men, the USPSTF found insufficient evidence to determine the balance of screening benefits and harms. That is not a recommendation against screening; individual risk and clinical judgment matter. [1] [2]
Weight-bearing activity, resistance training, and balance work affect bone and fracture risk differently. Cycling and swimming provide major health benefits but little direct skeletal loading compared with weight-bearing exercise. [3]
Supervised high-intensity resistance and impact training improved bone-density outcomes in a selected trial of 101 older postmenopausal women with low bone mass. The safety result came from a selected, supervised group and does not establish safety for unsupervised training. [4]
Calcium and vitamin D needs vary by age and sex. Food intake, medical conditions, deficiency risk, and total supplement dose commonly shape decisions about pills and testing. [5] [6] [7]

Common questions

Who should have a DXA scan?

The USPSTF recommends screening women at age 65 and postmenopausal women younger than 65 when a clinical risk tool finds increased fracture risk. The population recommendation does not cover known osteoporosis, prior fragility fractures or secondary osteoporosis. Long-term medicines such as glucocorticoids also need clinical evaluation. [1]

Does insufficient evidence mean men should not be screened?

The USPSTF says evidence is insufficient to judge population screening in men and leaves the decision to clinicians and patients. ISCD lists testing for men aged 70 or older. It also lists younger men with risk factors, adults with a fragility fracture and adults with diseases or medicines linked to bone loss. Age 45 alone is not a universal indication. [1] [2]

Does cardio do nothing for bone?

Weight-bearing cardio such as brisk walking, stair climbing, jogging, dancing, and racket sports loads bone. Cycling and swimming are not weight-bearing, so they provide less direct skeletal stimulus. They still support cardiovascular fitness and can remain part of a broader program. [3]

What type of training has the best evidence?

Most guidance combines progressive resistance training for muscle and skeletal loading, weight-bearing or impact activity when appropriate, and balance training to reduce falls. In a 12-month trial of 38 physically active men with low bone mass, both resistance and jump training improved whole-body and lumbar-spine BMD; only resistance training improved total-hip BMD. [3] [8]

Should I copy the LIFTMOR five-by-five protocol?

LIFTMOR used twice-weekly, 30-minute, supervised sessions at more than 85% of one-repetition maximum in women with low bone mass who were screened for conditions and medicines affecting bone and function. The trial found a 2.9% mean lumbar-spine BMD increase versus a 1.2% decrease in controls over 8 months. Its safety result applies to that selected, supervised setting and does not establish an unsupervised protocol for every adult. [4]

How much calcium and vitamin D do adults need?

NIH reference intakes are 1,000 mg calcium daily for adults 19 to 50 and men 51 to 70, and 1,200 mg for women 51 to 70 and adults over 70. Vitamin D reference intake is 600 IU daily through age 70 and 800 IU after 70. These are total intake targets, not automatic supplement doses, and individual needs can differ. The Endocrine Society suggests against routine vitamin D testing in otherwise healthy adults without a specific indication. [5] [6] [7]

What changes if I already have osteoporosis or a fragility fracture?

Care usually focuses on reducing fracture risk. Exercise plans account for fracture history, balance, strength, spinal status, medicines, and other conditions. High-impact loading or heavy lifting may need modification and professional supervision. Nutrition and exercise do not replace indicated osteoporosis medication. [9]

Does more school exercise reduce fractures in children?

A five-year controlled school programme increased some bone measures but did not reduce fractures during the study. Fracture rates were 20.0 versus 18.5 per 1,000 person-years, with a rate ratio of 1.08 and a 95% confidence interval from 0.79 to 1.47. Weight-bearing activity during growth can support bone strength. This study does not support a later-fracture reduction claim. [10]

Bone Health in Midlife: When to Scan and How to Train