BACKGROUND Vitamin D and iron deficiencies frequently co-exist. It is now appreciated that mechanistic interactions between iron and vitamin D metabolism may underlie these associations. OBJECTIVE We examined interrelations between iron and vitamin D status and their regulatory hormones in pregnant adolescents, who are a group at risk of both suboptimal vitamin D and suboptimal iron status. ...

UNLABELLED Obesity affects the vitamin D status in humans. Vitamin D and long-chain n-3 polyunsaturated fatty acids (PUFA) provide benefit for the prevention of fractures and cardiovascular events, respectively, and both are involved in controlling inflammatory and immune responses. However, published epidemiological data suggest a potential interference of n-3 PUFA supplementation with vitamin...

  Background : There is no data available regarding vitamin D status among patients with hip fractures in Iran. This study aimed to determine whether postmenopausal women with low trauma hip fractures have lower vitamin D levels comparing to the control group.   Materials and Methods: Vitamin D (25-OHD) level and the prevalence of hypovitaminosis D among 73 postmenopausal women wit...

Low vitamin D status is common in the United States and Europe with 8% and 13% of the population, respectively, reported to have serious vitamin D deficiency (i.e. serum 25-hydroxyvitamin D [25(OH)D] concentration <30 nmol/L) [1,2]. There is a considerable mismatch between current intakes of vitamin D and recommended target intakes for the vitamin [3]. Fortification of a wider range of foods wi...

Rickets ascribed to hypovitaminosis D remains a public health concern among Aboriginal children in Canada and the United States. Our primary objective in this study was to investigate the prevalence and risk factors (gender, age, vitamin D intake, and socioeconomic status) for low vitamin D status of Inuit preschoolers living in 16 Arctic communities (51(o)N-70(o)N) and participating in the 200...

Poor vitamin D status is common in older people and results in osteoporosis; osteomalacia is associated with a wide range of non-communicable diseases and has potential effects on poor health outcomes. Pain is also common in older people and can be substantially disabling. The aim of the present analysis is to investigate associations between serum 25-hydroxy vitamin D (25(OH)D) and self-report...

there are some reports of decreased serum levels of 25(oh)d in the subjects with impaired glucose tolerance and type 2 diabetes mellitus (t2dm). to assess vitamin d status of the iranian diabetics, a pilot study was conducted on 90 subjects with either type 1 diabetes mellitus (t1dm) (n= 30), t2dm (n= 30), or apparently healthy subjects (n= 30) during fall and winter of 2005. serum samples were...

BACKGROUND Low 25-hydroxyvitamin D levels are a global health problem with northern countries such as Canada at particular risk. A number of sociodemographic factors have been reported to be associated with low vitamin D levels but prior studies have been limited by the ability of the researchers to gather this data directly from clinical trial participants. The purpose of this study was to use...

Vitamin D deficiency has received increased attention over the past several years since vitamin D may play an important role not only in bonemetabolism but also in a variety of non-skeletal diseases such as diabetes mellitus, autoimmune diseases, infectious diseases, cardiovascular diseases and cancer [1–3]. Vitamin D is primarily synthesized in the skin and is partly derived from dietary sourc...