What does the lab evidence actually show about bone broth and joints?
Two animal studies suggest bone broth has real anti-inflammatory and bone-protective effects. In a 2021 mouse model of ulcerative colitis (a gut inflammation condition), bone broth given for 10 days before disease induction reduced the inflammatory cytokine IL-6 by 94.7% and TNF-α by 68.9%, while increasing anti-inflammatory cytokines like IL-10 by 532% [2]. This matters because systemic inflammation is a key driver of joint diseases like rheumatoid arthritis and osteoarthritis.
A 2024 rat study specifically looked at bone health: ovariectomized rats (a model for postmenopausal osteoporosis) that received chicken-vegetable bone broth showed increased bone mineral density and bone volume compared to untreated controls [5]. The key active compounds were identified as hyaluronan and chondroitin sulfate — substances already used in joint supplements. The broth fraction containing both compounds inhibited osteoclast (bone-breakdown cell) differentiation by downregulating marker genes [5].
What are the crucial caveats? No human trials yet.
The biggest limitation is that neither study tested bone broth in humans with joint problems. The 2021 study used a gut inflammation model, not a joint disease model, so while the anti-inflammatory mechanism is plausible for joints, it hasn't been directly tested [2]. The 2024 rat study used an osteoporosis model, which is related to bone density but not directly to joint pain, stiffness, or arthritis [5].
Additionally, the bone broth in these studies was carefully prepared (bovine femur cooked for 8 hours at 100°C [2]; chicken-vegetable broth with specific fractionation [5]), which may differ from store-bought or homemade broths. A 2026 food science study found that bone broth is an unstable emulsion prone to oil-water separation, and adding stabilizers like xanthan gum improved its shelf life but didn't test health effects [3]. So the quality and consistency of what you consume matters.
For context, a 2017 clinical trial on rheumatoid arthritis used powerful prescription drugs (methotrexate and steroid injections) and still only partially suppressed joint inflammation on MRI — it did not eliminate it [1]. This underscores that even strong medications have limits, and bone broth, while potentially helpful, is unlikely to replace medical treatment for serious joint conditions.
Who might benefit from bone broth for joints, and how much?
Based on the evidence, bone broth is most likely to help people with mild joint discomfort or those looking to support overall bone and joint health as part of a balanced diet. The anti-inflammatory effects seen in mice were substantial (94.7% reduction in IL-6) [2], but animal results often don't translate directly to humans. The bone-protective effects in rats were also significant — increased bone mineral density and bone volume [5] — but the dose and duration needed for humans are unknown.
People with diagnosed inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis) or severe osteoarthritis should not rely on bone broth alone. The 2017 trial showed that even aggressive drug therapy (methotrexate plus steroid injections) only partially controlled MRI-measured joint inflammation [1]. Bone broth might be a helpful dietary addition, but it is not a substitute for medical treatment.
Obesity is a major risk factor for joint problems because it causes both mechanical stress and chronic inflammation [4]. Since bone broth is low in calories and rich in protein and amino acids, it could be a useful part of a weight management diet that indirectly benefits joints. However, no study has tested this specific combination.
Sources used in this answer
Effect of a treat-to-target strategy based on methotrexate and intra-articular betamethasone with or without additional cyclosporin on MRI-assessed synovitis, osteitis, tenosynovitis, bone erosion, and joint space narrowing in early rheumatoid arthritis: results from a 2-year randomized double-blind
In a 2-year trial of early rheumatoid arthritis patients, methotrexate plus steroid injections significantly reduced MRI-measured joint inflammation (synovitis, tenosynovitis, osteitis) but did not eliminate it, and small increases in bone erosion and joint space narrowing still occurred.
Analysis of the Anti-Inflammatory Capacity of Bone Broth in a Murine Model of Ulcerative Colitis
Bone broth given to mice with induced ulcerative colitis reduced inflammatory cytokines IL-1β by 61.1%, IL-6 by 94.7%, and TNF-α by 68.9%, while increasing anti-inflammatory IL-10 by 532%.
Enhanced stability of bovine bone broth via xanthan gum and guar gum synergy: A multiscale analysis from molecular interactions to macroscopic structure.
A 2026 food science study found that adding xanthan gum and guar gum to bovine bone broth improved its emulsion stability, reducing oil separation and oxidative spoilage (POV and TBARS decreased to 45% and 40% of control after 60 days).
Obesity impact on bones and joints health
A 2024 review concluded that obesity increases the risk of osteoarthritis, rheumatoid arthritis, and fractures through both mechanical and inflammatory mechanisms, and that weight management is key for joint health.
Hyaluronan and chondroitin sulfate in chicken-vegetable bone broth delay osteoporosis progression.
In ovariectomized rats (a model of osteoporosis), chicken-vegetable bone broth and its fraction containing hyaluronan and chondroitin sulfate increased bone mineral density and bone volume, and inhibited osteoclast differentiation in cell experiments.