Context The role and dose of oral vitamin D supplementation in nonvertebral fracture prevention have not been well established.
Objective To estimate the effectiveness of vitamin D supplementation in preventing hip and nonvertebral fractures in older persons.
A systematic review of English and non-English articles using MEDLINE and the Cochrane Controlled Trials Register (1960-2005),
Purpose of review: To highlight the human studies published over the past year examining the influence of vitamin D on risk of colorectal cancer.
Studies over the past year have added more support to the idea that higher levels of vitamin D may decrease risk of colorectal cancer.
Background Observational and some experimental data suggest that low intake of vitamin K may be associated with an increased risk of fracture.
Objective To assess whether oral vitamin K (phytonadione and menaquinone) supplementation can reduce bone loss and prevent fractures.