CONCLUSIONS Supplementation with vitamin D showed no effect on adiposity measures in adults
CONTEXT The independent or interactive effects of vitamin D and calcium on adiposity remain inconclusive .
OBJECTIVE The objective of this systematic review and meta- analysis was to assess whether vitamin D and calcium supplements cause changes in adiposity .
Distribution and correlates of serum 25-hydroxyvitamin D levels in a sample of patients with hip fracture.
BACKGROUND Vitamin D deficiency is common in older population s , particularly during the winter months due to low levels of ultraviolet light exposure , and in nursing home residents . OBJECTIVE The main objective of the current study was to assess the distribution of serum 25-hydroxyvitamin D and its correlates in a sample of men and women with recent hip fractures who were part of a large clinical trial . METHODS This was a cross-sectional exploratory study of screened and ultimately r and omized patients with hip fractures . They were part of a multinational ( 115 clinical centers in 20 countries ) , r and omized , placebo-controlled , double-blind study testing the efficacy of a yearly IV bisphosphonate ( zoledronic acid ) in the prevention of new clinical fractures in patients with recent hip fracture repair .  Levels of 25-hydroxyvitamin D , calcium , alkaline phosphatase , creatinine clearance , and albumin were measured at a screening visit using blood serum . Demographic variables were assessed by patient self-report . Bone mineral density ( BMD ) was assessed by dual-energy x-ray absorptiometry of the nonfractured hip . RESULTS This report included 1174 screened patients ( 526 with vitamin D measured ) and 655 ( 385 with vitamin D measured ) patients r and omized before the protocol amendment . In screened patients , levels of 25-hydroxyvitamin D were low ( median , 14.7 ng/mL ; interquartilc range , 7.6 , 21.65 ) . Overall , 51 % were at or below the clinical ly meaningful threshold of 15 ng/mL. Among those patients r and omized , the level of 25-hydroxyvitamin D was significantly positively related to male sex ( rho , 0.13 ; P < 0.05 ) , serum calcium ( rho , 0.16 ; P < 0.01 ) , and BMD at the femoral neck ( rho , 0.22 ; P < 0.01 ) in bivariate analyses . Low serum 25-hydroxyvitamin D ( < 15 ng/mL ) was related only to low serum calcium ( odds ratio , 0.16 ; 95 % CI , 0.05 - 0.52 ) in multivariable logistic models controlling for sex , age , race , body mass index , living at home , alkaline phosphatase , and creatinine clearance . CONCLUSIONS We concluded that vitamin D insufficiency was a common problem in this population of elderly patients who had recently suffered a hip fracture . This insufficiency was related only to serum calcium in multivariable controlled models but can not be reliably identified or excluded by measuring serum calcium alone . Physicians should be encouraged to check and monitor patients ' serum levels of 25-hydroxyvitamin
CONCLUSIONS Supplementation with vitamin D showed no effect on adiposity measures in adults
CONTEXT The independent or interactive effects of vitamin D and calcium on adiposity remain inconclusive .
OBJECTIVE The objective of this systematic review and meta- analysis was to assess whether vitamin D and calcium supplements cause changes in adiposity .