Insulin Resistance Effects on Bone Health

Insulin resistance, a hallmark of metabolic disorders such as type 2 diabetes mellitus, exerts multifaceted effects on skeletal integrity. At the cellular level, impaired insulin signalling disrupts osteoblast differentiation and function, diminishes production of bone matrix, and alters the balance between bone formation and resorption. Systemic insulin resistance is often accompanied by chronic low-grade inflammation, oxidative stress and dysregulated adipokine secretion, each of which further perturbs osteoclast activity and bone turnover. Clinically, populations with insulin resistance exhibit paradoxical changes in bone mineral density (BMD): initial increases in BMD can mask underlying deficits in bone quality, leading ultimately to higher fracture risk. Manifestations span reduced trabecular connectivity, accumulation of advanced glycation end products in collagen and compromised microarchitecture. The global rise in insulin-resistant states underscores the importance of understanding these mechanisms to inform strategies for osteoporosis prevention and optimise bone health across the lifespan.

Research from Nature Portfolio

Recent studies have employed large-scale population data to elucidate links between indices of insulin resistance and BMD. One investigation of a nationally representative cohort revealed a positive correlation between the triglyceride-glucose (TyG) index and total BMD, with saturation thresholds indicating non-linear relationships. Subgroup analyses demonstrated that race and gender modulate the strength of association, and that higher TyG-related indices coincide with plateauing of BMD gains. In postmenopausal patients with type 2 diabetes, a novel metabolic score for insulin resistance (METS-IR) was shown to correlate positively with lumbar spine, femoral neck and hip BMD within a defined range. Below a specific METS-IR threshold, each incremental rise was associated with reduced osteoporosis risk, while above this level no further protective effect was observed. These findings refine our understanding of risk stratification, suggesting distinct insulin resistance thresholds for skeletal benefit versus detriment.

Insulin Resistance Effects on Bone Health publication trend

The graph below shows the total number of articles in insulin resistance effects on bone health across all publications each year (not limited to Nature Index journals).

Technical terms

Insulin resistance: Reduced ability of insulin to promote glucose uptake and regulate metabolic pathways in target tissues, including bone.

Bone mineral density (BMD): Quantitative measure of mineral content in bone, reflecting bone strength and fracture risk.

Triglyceride-glucose (TyG) index: Surrogate marker for insulin resistance calculated from fasting triglyceride and glucose concentrations.

Homeostatic Model Assessment for Insulin Resistance (HOMA-IR): Estimate of insulin resistance derived from fasting glucose and insulin levels.

Osteogenic differentiation: Process by which mesenchymal stem cells commit to and mature as bone-forming osteoblasts.

References

1. Association between triglyceride glucose index and total bone mineral density: a cross-sectional study from NHANES 2011–2018. Scientific Reports (2024).
2. The metabolic score of insulin resistance is positively correlated with bone mineral density in postmenopausal patients with type 2 diabetes mellitus. Scientific Reports (2023).
3. Insulin promotes the bone formation capability of human dental pulp stem cells through attenuating the IIS/PI3K/AKT/mTOR pathway axis. Stem Cell Research & Therapy (2024).
4. The correlation between TyG-BMI and the risk of osteoporosis in middle-aged and elderly patients with type 2 diabetes mellitus. Frontiers in Nutrition (2025).