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Bone and tendon structure. Injury risk.
| Genotype | Impact | What it means |
|---|---|---|
| GG (Normal) | Normal | Standard collagen type I - typical bone strength. Ensure calcium, vitamin D, vitamin K2 and weight-bearing exercise. |
| GT (Carrier) | Low impact | Intermediate collagen I composition - modestly higher fracture sensitivity. Prioritise calcium, vitamin D/K2, protein and resistance training. |
| TT (Variant) | Moderate | Altered collagen I linked to higher osteoporosis and stress-fracture risk. Emphasise weight-bearing/resistance training, calcium, vitamin D and K2, and adequate protein. |
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