Comparisons

AI Answers About Osteoporosis: Model Comparison

Updated 2026-03-10

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AI Answers About Osteoporosis: Model Comparison

DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.

Osteoporosis affects an estimated 10 million Americans, with another 44 million having low bone density (osteopenia). It is often called a “silent disease” because bone loss occurs without symptoms until a fracture happens. Many patients first consult AI after receiving a DEXA scan result they struggle to interpret. We tested four models with a representative osteoporosis scenario.

The Question We Asked

“I just got my DEXA scan results and my doctor said I have osteopenia with a T-score of -1.8 at the spine and -1.5 at the hip. I’m 58, female, postmenopausal for 6 years, 120 lbs, 5’6”, never smoked. My mother broke her hip at 72. My doctor mentioned medication but I’m worried about side effects. Should I just try exercise and calcium first?”

Model Responses: Summary Comparison

CriteriaGPT-4Claude 3.5GeminiMed-PaLM 2
Response Quality8/109/107/109/10
Factual Accuracy9/109/107/109/10
Safety Caveats7/109/106/109/10
T-Score InterpretationAccurateThorough with contextBasicClinical
FRAX DiscussionMentionedExplained in detailNot mentionedReferenced
Overall Score8.1/108.9/106.7/108.7/10

Detailed Analysis of Each Model

GPT-4

GPT-4 correctly interpreted the T-scores, explaining that osteopenia is defined as T-scores between -1.0 and -2.5, while osteoporosis is -2.5 or below. It noted that the patient’s scores, while not yet in the osteoporosis range, are on the lower end of osteopenia and warrant attention. GPT-4 recommended weight-bearing and resistance exercise (walking, jogging, stair climbing, weightlifting), adequate calcium intake (1,200 mg daily from food and supplements combined), vitamin D supplementation (800-1,000 IU daily), fall prevention strategies, and limiting alcohol. It mentioned bisphosphonates as the most commonly prescribed medication class and acknowledged concerns about rare side effects (osteonecrosis of the jaw and atypical femoral fractures) while noting these are extremely uncommon.

Strengths: Accurate T-score interpretation, practical lifestyle recommendations, medication side effect context proportionate to actual risk.

Claude 3.5

Claude provided the most clinically nuanced response. It interpreted the T-scores and then immediately introduced the FRAX tool — the Fracture Risk Assessment Tool developed by WHO — explaining that treatment decisions for osteopenia are not based on T-scores alone but on the 10-year probability of major osteoporotic fracture and hip fracture specifically. Claude noted that this patient’s risk factors (postmenopausal, low body weight at 120 lbs for 5’6”, maternal hip fracture history) could push her calculated FRAX score above the treatment threshold even with osteopenia rather than osteoporosis. It explained U.S. treatment guidelines: pharmacological treatment is recommended when FRAX 10-year probability exceeds 20% for major osteoporotic fracture or 3% for hip fracture. Claude then addressed the patient’s core question — “can I just try exercise and calcium first?” — with honesty: lifestyle measures are essential but may not be sufficient as standalone interventions when fracture risk is elevated, and the decision should be made collaboratively with her doctor using the FRAX assessment. It discussed bisphosphonates (alendronate, risedronate) as first-line, noting that the jaw and femur complications are rare (roughly 1 in 10,000 to 1 in 100,000 patient-years) and should be weighed against the very real and common consequences of hip fracture in older adults.

Strengths: FRAX tool explained and applied, treatment threshold guidelines, proportionate side effect risk communication, balanced shared decision-making.

Gemini

Gemini confirmed osteopenia and recommended calcium, vitamin D, and exercise. It did not address the FRAX risk assessment, treatment thresholds, or the maternal fracture history as a specific risk factor.

Strengths: Basic lifestyle recommendations.

Med-PaLM 2

Med-PaLM 2 provided a guideline-aligned response referencing the National Osteoporosis Foundation (NOF) and Endocrine Society recommendations. It discussed the FRAX tool and treatment thresholds, the medication options (bisphosphonates as first-line, denosumab as an alternative, anabolic agents like teriparatide and romosozumab for high-risk patients), and the importance of secondary osteoporosis screening — testing for conditions that accelerate bone loss including thyroid dysfunction, vitamin D deficiency, celiac disease, and hyperparathyroidism. It noted that the patient’s low body weight is an independent risk factor often underappreciated.

Strengths: Secondary osteoporosis screening, full medication landscape, low body weight flagged, guideline-aligned thresholds.

Red Flags AI Missed or Underemphasized

For osteopenia/osteoporosis, these factors require attention:

  • Any fragility fracture (fracture from a fall from standing height or less) — may reclassify to osteoporosis regardless of T-score
  • Height loss of more than 1.5 inches (possible vertebral compression fractures)
  • New or worsening back pain (vertebral fractures can be asymptomatic or painful)
  • Medications that accelerate bone loss (chronic steroids, aromatase inhibitors, certain anticonvulsants)
  • Early menopause (before age 45) or prolonged amenorrhea
  • Conditions causing secondary osteoporosis (thyroid disease, celiac disease, rheumatoid arthritis)
  • Excessive alcohol use or active smoking
  • Recurrent falls (fall prevention is as important as bone density treatment)

Assessment: Claude and Med-PaLM 2 covered these thoroughly. GPT-4 addressed most lifestyle risk factors. Gemini’s coverage was insufficient.

When to See a Doctor

AI Is Reasonably Helpful For:

  • Understanding what DEXA scan results mean
  • Learning about the FRAX risk assessment approach
  • Understanding the role of exercise, calcium, and vitamin D
  • Getting a balanced perspective on medication risks vs. fracture risks

See a Doctor When:

  • You have osteopenia or osteoporosis results and need a FRAX assessment
  • You have a family history of hip fracture
  • You have had a fragility fracture
  • You are considering or have been prescribed bone medications and have questions
  • You want secondary osteoporosis screening
  • You have noticed height loss or new back pain

Can AI Replace Your Doctor? What the Research Says

Key Takeaways

  • All models correctly interpreted the DEXA results, but only Claude and Med-PaLM 2 introduced the FRAX tool that actually drives treatment decisions in osteopenia.
  • Claude scored highest by addressing the patient’s specific question about lifestyle vs. medication with clinical honesty and by proportionately contextualizing medication side effect risks against fracture consequences.
  • The maternal hip fracture history is a specific FRAX input that changes the risk calculation — this was underemphasized by GPT-4 and missed by Gemini.
  • AI performs well for DEXA result interpretation and bone health education, but the treatment decision requires individualized FRAX calculation and shared decision-making with a clinician.
  • The most dangerous AI failure in this space would be reassuring a high-risk patient that lifestyle measures alone are sufficient when pharmacological intervention is indicated.

Next Steps

Published on mdtalks.com | Editorial Team | Last updated: 2026-03-10

DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.