Bone Abstracts

There is wide variation in the dose-response to oral vitamin D and the increment in plasma 25(OH)D decreases per unit vitamin D given. We hypothesised that this is related to increased 25(OH)D catabolism as reflected in 25OHD half-life (25(OH)D3 t1/2).Design: 25(OH)D3 t1/2 was measured with a stable isotope (SI) technique in older (70y+) men and women in the UK during winter before (<...