Vitamin D deficiency and insufficiency has become a pandemic health problem with a
consequent increase of requests for determining circulating levels of 25-hydroxyvitamin D …

Background Although many studies found an association between psychiatric disorders,
especially major depressive disorder, and vitamin D deficiency, little is still known about the …

Although geographic ecological studies and observational studies find that ultraviolet B
exposure and 25-hydroxyvitamin D [25 (OH) D] concentrations are inversely correlated with …

Background Plasma-free normetanephrine and metanephrine (metanephrines) are the
recommended biomarkers for testing of pheochromocytoma and paraganglioma (PPGL) …

Menopause is a stage of hormonal imbalance in women which, in addition to other
physiopathological consequences, poses a risk of deficiency of key micronutrients such as …

Background Some evidence suggests indirect ameliorating effects of vitamin D in diabetes
via adiponectin and sirtuins. This study aimed to evaluate the effects of daily intake of …

Vitamin D is a micronutrient that plays a large role in bone disease, and researchers are
now discovering that it also does so in non-skeletal disease, thus making high-quality …

ObjectiveTo investigate seasonal variations of vitamin D status at different latitudes and if
these changes are accompanied by corresponding variations in certain health parameters in …

There is a growing concern about the impacts of hypovitaminosis D on the health of
pregnant woman, fetal development, childhood, and adult life. Variations in maternal …

There are a number of reports showing high prevalence of hypovitaminosis D across Iran.
The objective of this study was to evaluate whether food fortification with vitamin D has the …