Background: Low levels of 25 (OH) vitamin D are associated with various age-related
diseases and mortality, but causality has not been determined. We investigated vitamin D …

Abstract Context: Low 25-hydroxyvitamin D [25 (OH) D] concentrations have been
consistently associated with excess mortality in epidemiological studies, but this association …

Background: Vitamin D insufficiency is common among older adults. Genome-wide
association studies have found an association between variants in the vitamin D binding …

Background and aims In this study, the aim is to explore whether frailty status modified the
associations of serum 25 (OH) D levels with all-cause and cause-specific mortality in the …

Background Vitamin D deficiency has been linked to the risk of frailty. However, there are
limited methods for evaluations of the potential association of vitamin D with frailty in a …

Objective Older people are more prone to vitamin D deficiency than younger populations.
Individual lifestyle factors have been associated with vitamin D status. We examined the …

Background: Low circulating 25-hydroxyvitamin D [25 (OH) D] is prevalent in African
Americans, but predictors of vitamin D status are understudied compared to Caucasian …

Objectives Evidence suggests vitamin D deficiency is associated with developing frailty.
However, cardiometabolic factors are related to both conditions and may confound and/or …

Context: Vitamin D deficiency and frailty are common with aging, but the association
between these conditions is uncertain. Objective: To determine the association between 25 …

The aim of this study was to determine if increased mortality associated with low levels of
serum 25-hydroxyvitamin D (25 (OH) D) reflects a causal relationship by using a Mendelian …