Download
Women's low vitamin D levels during pregnancy are linked to a higher risk of cavities in the teeth of their toddlers, according to a new study from Canada.
Previous studies have shown that vitamin D deficiency among mothers can lead to defects in the enamel of their toddlers' teeth - which have already begun to develop in the womb – and that these defects can increase the risk of tooth decay.
Robert J. Schroth from University of Manitoba's dental school in Winnipeg and his team wondered whether low vitamin D levels in mothers during pregnancy would also translate into higher cavity rates for their toddlers.
They measured vitamin D levels in the second or early third trimester in 207 pregnant women and then examined the teeth of 135 of their children when they were an average of 16 months old. Mothers-to-be were recruited from a predominantly poor, urban area.
Women's vitamin D levels were mostly in the normal range, but about one-third had levels that were too low.
Depending on what definition of cavities the researchers used, 23 to 36 percent of the toddlers had cavities.
Prenatal vitamin D levels were significantly lower in women whose toddlers later had cavities than in women whose toddlers did not have cavities, according to findings published on Monday in the journal Pediatrics.
In fact, there was a direct relationship between low vitamin D levels in mothers and higher numbers of cavities in their toddlers.
Besides low vitamin D levels in mothers, defects in the tooth enamel were also associated with cavities in kids.
About the broadcaster:
Anne Ruisi is an editor at China Daily online with more than 30 years of experience as a newspaper editor and reporter. She has worked at newspapers in the U.S., including The Birmingham News in Alabama and City Newspaper of Rochester, N.Y.
tassel的口语经验
考官眼中不易得高分的几类雅思作文
雅思口语英语五种语调表达技巧
雅思新政:口语项答非所问将会被惩罚性扣分
雅思写作范文:汽车控制
口语Festival素材:St Andrew's Day(圣安德鲁日)
5月增补版口语大全(2)
如何让口语表达更流利
雅思写作引言段的句型参考
口语Topic问答模版(1)
口语Festival素材:The Double Ninth Festival(重阳节)
口语Festival素材:Bierborse(啤酒节)
如何准备雅思口语考试
口语宗师谈雅思新政:新雅思备考口语是难关
雅思写作范文:快餐和传统食品的区别
雅思口语测验技巧(第五阶段)
关于口语的几个疑问解答
口语Festival素材:New Year's Day(新年)
雅思口语经验谈
雅思考官披露口语”潜规则“
雅思口语考试 透析测评依据
备战雅思10大黄金策略:勤练口语夯实词汇
雅思口语应试策略和训练方法(2)
如何对付考官在第一阶段开始第三阶段的问题
IELTS口语TOPIC以及答案的新鲜集锦(3)
IELTS口语TOPIC以及答案的新鲜集锦(2)
走出词汇量越大越好的误区
口语Festival素材:Mid-Autumn Festival(中秋节)
雅思写作Task 2的写作方法及要点
雅思口语低分原因整理
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |