Background: Vitamin D has an essential role in bone growth and metabolism. Currently, its
role has been investigated in different diseases. It is high prevalence of vitamin D deficiency …

Background and Aim: Vitamin D has a basic role in bone development and metabolism.
Regarding high prevalence of vitamin D deficiency in Iran, we aimed to investigate its point …

Background: Vitamin D deficiency is a health problem in different countries. Vitamin D
deficiency is an important health problem in both developed and developing countries …

Introduction: Vitamin D deficiency is recognized as an epidemic among children. The
present study has analyzed serum 25 hydroxyvitamin D [25 (OH) D] levels of children living …

Background: Vitamin D deficiency is related to rickets in children, and it can increase the risk
of osteoporosis in adulthood. The aim of our study was to estimate the prevalence of vitamin …

Background The aim of this study was to determine the prevalence of vitamin D deficiency
among preschool children in rural and urban areas of Northern Iran and need for continuing …

Objective: Despite the high prevalence of vitamin D deficiency in adults worldwide, not many
studies have evaluated the condition in adolescents. The present study was therefore …

BACKGROUND: Vitamin D is essential for the maintenance of good health, and vitamin D
deficiency has been reported from many countries including sunny ones. Due to the …

Purpose: The aim of this study was to determine vitamin D levels in children and
adolescents aged between 2 months and 16 years, and to investigate risk factors leading to …

Prevalence of vitamin D deficiency is remarkable during childhood and adolescence
throughout the world. Sufficient intake of vitamin D contributes to a number of health …