Adult co-twin study of 1261 pairs, 1/2 Rx w/ metformin. Although metformin Rx Twin had higher BMI, they had significantly less incident peripheral OA (adjusted HR 0.60; 0.44–0.82). @ 10 yrs, 6.7% of treated twins, vs 9.7% of non-treated twins had incident OA, with difference of https://t.co/7KpiGssFSo