Certain prescription medicines can affect the body’s natural bone-renewal process, potentially increasing bone loss and fracture risk. From corticosteroids and cancer treatments to anti-seizure medicines and antidepressants, understanding these risks can help patients take informed steps towards protecting their bone health. Never discontinue prescribed medication without consulting your doctor.
Certain prescription medications can gradually weaken bones, increase bone loss and raise the risk of fractures. While these medicines are often essential for treating serious health conditions, emerging research highlights why patients and doctors should pay closer attention to long-term bone health. Here are five medication groups associated with increased fracture risk, the science behind their effects and practical ways to protect your bones.
How Can Medicines Affect Bone Strength?
Bones are living tissues that constantly undergo renewal. Specialised cells remove old bone while other cells build new bone. When this balance is disturbed, bone mineral density (BMD) can decline, increasing the possibility of osteoporosis and fractures.
According to research highlighted by The Washington Post in November 2026, five medication groups deserve particular attention: corticosteroids, aromatase inhibitors, anti-seizure medicines, androgen deprivation therapy and certain antidepressants.
Importantly, the risk depends on the medication, dosage, duration of treatment, age and individual health.
1. Oral Corticosteroids: A Major Cause of Medication-Related Bone Loss
Examples: Prednisone, prednisolone, methylprednisolone and dexamethasone.
Corticosteroids are prescribed for asthma, autoimmune disorders, severe allergies and inflammatory conditions.
Long-term use can interfere with bone formation, increase bone breakdown and reduce calcium absorption. The resulting changes can accelerate bone loss, particularly in the first few months of treatment.
The American College of Rheumatology recommends fracture-risk assessment for adults receiving at least 2.5 mg of prednisone-equivalent medication daily for more than three months.
Patients may require a DEXA scan and, depending on their fracture risk, preventive osteoporosis treatment.
2. Aromatase Inhibitors: Reduced Estrogen Can Weaken Bones
Examples: Anastrozole, letrozole and exemestane.
These medications are commonly prescribed to women with hormone-sensitive breast cancer.
They work by reducing estrogen production. Although this helps control cancer growth, estrogen also plays an important role in maintaining bone density.
The 2024 UK National Osteoporosis Guideline Group (NOGG) reports average bone loss of approximately 1–3% annually in postmenopausal women receiving aromatase inhibitors.
Women starting these treatments should have their fracture risk assessed. Depending on individual risk, doctors may recommend bone-density monitoring and medicines such as bisphosphonates or denosumab.
3. Anti-Seizure Medicines: Vitamin D and Calcium May Be Affected
Examples: Phenytoin, carbamazepine and phenobarbital.
Certain older anticonvulsants can interfere with vitamin D metabolism.
Phenytoin, for example, stimulates liver enzymes that increase vitamin D breakdown. Lower vitamin D levels can reduce calcium absorption, potentially contributing to osteomalacia, osteoporosis and fractures.
Patients taking these medicines over extended periods should discuss bone-health monitoring and vitamin D assessment with their doctors.
Not every anti-seizure medicine carries the same level of risk.
4. Androgen Deprivation Therapy: Bone Loss in Prostate Cancer Patients
Examples: Leuprolide, goserelin and degarelix.
Androgen deprivation therapy (ADT) reduces testosterone levels and is widely used in prostate cancer treatment.
Testosterone supports bone strength. Suppressing its production can accelerate bone loss and increase fracture risk.
The 2024 NOGG guideline recommends fracture-risk assessment for men starting ADT. Bone-density measurement should be considered where appropriate.
For patients at higher risk, doctors may prescribe bisphosphonates or denosumab.
5. SSRIs: Antidepressants and Their Possible Effect on Bones
Examples: Fluoxetine, sertraline, escitalopram and citalopram.
Selective serotonin reuptake inhibitors (SSRIs) are widely prescribed for depression and anxiety.
Research suggests that serotonin signalling may influence bone metabolism. Studies have also associated SSRI use with increased fracture risk, although the precise biological relationship remains under investigation.
A 2024 systematic review and meta-analysis involving more than 1.4 million participants reported associations between antidepressant use, lower bone mineral density and increased hip-fracture risk.
However, these findings do not establish that antidepressants directly cause every fracture. Falls, age, depression and other health conditions may also contribute.
How Can You Protect Your Bones While Taking These Medicines?
If you take any of these medications regularly, consider discussing the following measures with your healthcare provider:
- DEXA scan: Ask whether a bone-density assessment is appropriate, particularly with long-term treatment or additional osteoporosis risk factors.
- Calcium and vitamin D: Maintain adequate dietary calcium and appropriate vitamin D levels. Supplements should be based on individual requirements.
- Regular exercise: Walking, resistance training and suitable weight-bearing activities can support bone strength.
- Fall prevention: Maintain muscle strength, improve balance and reduce household fall hazards.
- Preventive treatment: Patients with elevated fracture risk may benefit from prescription treatments such as bisphosphonates or denosumab.
Should You Stop Taking These Medications?
Absolutely not without medical advice.
Many of these medicines treat potentially life-threatening conditions. Abruptly stopping corticosteroids, anti-seizure medicines or cancer treatments can have serious consequences.
Instead, discuss your individual fracture risk, possible alternatives, monitoring requirements and preventive treatment with your prescribing doctor.
The Bottom Line
Medication-related bone loss is an important but sometimes overlooked health concern. Corticosteroids, aromatase inhibitors, certain anti-seizure medicines, androgen deprivation therapy and SSRIs can all be associated with reduced bone strength or increased fracture risk.
The solution is not to avoid essential treatment. It is to recognise potential risks early, monitor bone health and take appropriate preventive measures.
#BoneHealth #Osteoporosis #BoneLoss #MedicationSafety #HealthyAgeing
Medical Disclaimer:
This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. Never change or discontinue prescribed medication without consulting your doctor.
References and Scientific Sources
- The Washington Post – 5 Medications That Can Cause Bone Thinning (November 2026)
- American College of Rheumatology – Glucocorticoid-Induced Osteoporosis Guidelines
- National Osteoporosis Guideline Group – 2024 Clinical Guideline
- 2024 Systematic Review – Antidepressants and Fragility Fractures
- Systematic Review and Meta-analysis – Antidepressants, Osteoporosis and Fracture Risk
- FDA Drug Labelling – Phenytoin and Effects on Vitamin D and Bone