Children’s Hospital of Philadelphia - Many otherwise healthy children and adolescents have a low vitamin D level , which may put them at risk for bone diseases such as rickets.美国费城儿童医院,许多其他健康儿童和青少年有一个低维生素d水平 ,这可能使它们的危险性骨骼疾病,如佝偻病. African American children, children above age nine and with low dietary vitamin D intake were the most likely to have low levels of vitamin D in their blood, according to researchers from The Children’s Hospital of Philadelphia.美国黑人儿童,上述九岁与低维生素d摄入的人最可能有低水平的维生素d ,其血液中,根据研究者来自美国费城儿童医院.

An NIH-funded study in the current issue of the American Journal of Clinical Nutrition measured blood levels of vitamin D in 382 healthy children between six years and 21 years of age living in the northeastern United States.卫生研究院资助的这一研究结果发表在最新的美国临床营养学杂志测血中维生素d的382名健康儿童之间的六年, 21岁,住在美国东北部. Researchers assessed dietary and supplemental vitamin D intake, as well as body mass, and found that more than half of the children had low blood levels of vitamin D. Of the subjects, 55 percent of the children had inadequate vitamin D blood levels and 68 percent overall had low blood levels of the vitamin in the wintertime.研究者评估饮食及补充维生素d的摄取量以及体重,发现半数以上的孩子有低血维生素d水平的学科, 55 %的儿童没有足够的维生素d血和68 %总体上低血中的维生素在冬天.

“The best indicator of a person’s vitamin D status is the blood level of a vitamin D compound called 25-hydroxyvitamin D ,” said Babette Zemel, Ph.D., a nutritional anthropologist at Children’s Hospital and primary investigator of this study. "的最佳指标,一个人的维生素d地位,是血服用维生素d化合物称为25 -羟丁说: " babette泽梅尔博士,营养人类学家儿童医院和基层调查这学习. “Vitamin D deficiency remains an under-recognized problem overall, and is not well studied in children.” "维生素d缺乏仍是一个下承认的问题,整体而言,并没有很好的研究,在孩子"

Vitamin D is crucial for musculoskeletal health.维生素d是至关重要的骨骼健康. The primary dietary source of the vitamin is fortified milk, but the best way to increase vitamin D levels is from exposure to sunshine.主要饲料来源,维生素,是牛乳的,但最好的方法以增加维生素d水平,是从接触到阳光. Severe deficits in vitamin D may lead to muscle weakness, defective bone mineralization and rickets.严重亏损的维生素d ,可导致肌肉无力,骨缺损矿化和佝偻病. In addition to musculoskeletal effects, vitamin D is important for immune function, and low blood levels of the vitamin may contribute to diseases such as hypertension, cancer, multiple sclerosis and type 1 diabetes.除了骨骼的影响,维生素d是重要的免疫功能,低血中的维生素可能有助于疾病,如高血压,癌症,多发性硬化症及一型糖尿病. Decreased blood levels of vitamin D have also been linked to obesity.降低血液中维生素d的水平,也与肥胖有关.

Further study is needed to determine the appropriate blood levels of vitamin D in children, said Dr. Zemel, who added that a review of the current recommendations for vitamin D intake is needed.还需要进一步研究来确定适当服用维生素d在孩子们泽梅尔博士,他们说,审查目前的建议,维生素d的摄取量是需要的.