My mother has osteoporosis. Are calcium supplements effective?

Question

Hello doctor,

My mother is 62 and was recently diagnosed with osteoporosis after her DEXA scan showed a T-score of –2.9 at the hip. She had a wrist fracture last year and now experiences back pain.

She was advised to start bisphosphonates, but is concerned about side effects such as stomach upset and the rare risk of jaw problems. So my questions are -

Are there safer alternatives, such as injections like Denosumab, for someone her age?
Also, how effective are calcium and vitamin D supplements once osteoporosis is already present?
Lastly, should weight-bearing exercises still be part of her routine, even though she fears the risk of another fracture?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

A T-score of minus 2.9 (–2.9) with a history of fracture confirms established osteoporosis, so treatment beyond calcium and vitamin D is essential.

Bisphosphonates are usually first-line, but if she is worried about stomach irritation or the rare risk of jaw osteonecrosis, Denosumab, given as a six-monthly injection, is a good alternative in her age group.

It is effective and avoids gastric side effects, but needs monitoring because bone loss rebounds once it is stopped, so follow-up therapy with another drug is required.

Calcium and vitamin D alone cannot reverse osteoporosis, but they are the foundation of treatment. Without correcting deficiencies, medications do not work effectively.

Weight-bearing exercise remains important for maintaining bone strength and balance and preventing falls, but it should be gentle and supervised, such as walking or light resistance training. Avoiding all activity worsens bone loss, so safe, guided movement is recommended.

The most likely cause is postmenopausal estrogen deficiency, though secondary osteoporosis from thyroid, parathyroid, or steroid use, and even osteomalacia if vitamin D is very low, should be considered.

Useful investigations include

Serum calcium, phosphate, vitamin D, and PTH (parathyroid hormone).
Repeat DEXA (dual-energy x-ray absorptiometry) scans every one to two years.
If her back pain is new or severe, a spine X-ray or MRI (magnetic resonance imaging) is needed to rule out vertebral compression fractures.

The best treatment approach involves

Calcium 1000 to 1200 mg daily with vitamin D to maintain levels between 30 and 50 ng/mL,
An anti-resorptive drug, either a weekly or monthly Bisphosphonate or Denosumab if Bisphosphonates are not tolerated.
Pain management, physiotherapy for posture, and vertebral support may also help if a fracture is confirmed.

She should avoid smoking and alcohol, maintain adequate protein intake, ensure fall prevention at home, and continue safe weight-bearing or balance exercises.

Follow up with vitamin D levels and current medications; she may need a spine X-ray or MRI to rule out a compression fracture. We can then decide if Denosumab is a better option than Bisphosphonate for her.

I hope this helps.

Thank you.