Background Vitamin D insufficiency and deficiency in childhood are common. However, the
status and influential factors of vitamin D during different ages are not clear. This study …

Background: Vitamin D deficiency is considered to be a public health problem. However, the
nutrient status of vitamin D in Chinese children is unclear. The aim of this study was to …

Background The increasingly recognized importance of vitamin D has been discussed and
vitamin D status among young children has attracted widespread attention in recent years …

Background Recent studies have suggested that vitamin D deficiency in children is
widespread. But the vitamin D status of Chinese children is seldom investigated. The …

Vitamin D deficiency is associated with numerous public health issues. Limited data are
available for children in southern China, a region that receives abundant sunlight. We aimed …

Vitamin D deficiency and insufficiency pose global public health challenges, yet research on
serum vitamin D levels in the 0–17-year-old age group in southeastern China remains …

Abstract Background Vitamin D deficiency (VDD) and vitamin D insufficiency (VDI) are highly
prevalent in the world, but the vitamin D status of children in northeast China is seldom …

Abstract Background Vitamin D deficiency (VDD) is a public health problem. The variation in
vitamin D status across regions and populations remains unclear, and there is a lack of …

Background To explore the vitamin D status with its demographic and lifestyle factors
including dietary, supplementation, and physical activity in 0–5 years old children. Methods …

The variation in vitamin D status is still unclear. We aim to describe the vitamin D status
among healthy infants and children in Shanghai (31° N latitude), one of the largest cities in …