<div dir="ltr"><p style="color:rgb(0,0,0);font-family:"Times New Roman";font-size:medium"><span class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><strong>你好!</strong></span><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><span class="gmail-auto-style1" style="font-family:"Microsoft YaHei"">在美国，估计大约40%到70%的氟化物摄入量来自含氟饮用水。新的研究确定，每升1.5毫克氟化物是儿童发育安全问题的关键阈值。</span><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><span class="gmail-auto-style1" style="font-family:"Microsoft YaHei"">通过牙膏、漱口水以及用氟化水制成的食物和饮料摄入氟化物，可能会增加儿童和孕妇的总氟化物暴露量，“并可能影响胎儿、婴儿和儿童的神经发育”。</span><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><span class="gmail-auto-style1" style="font-family:"Microsoft YaHei"">以下是文章的主要内容：</span><br class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><span class="gmail-auto-style1" style="font-family:"Microsoft YaHei""><a href="https://tinyurl.com/fu-huawu-yu-ertong1">https://tinyurl.com/fu-huawu-yu-ertong1</a></span></p><p class="gmail-auto-style1" style="font-family:"Microsoft YaHei";color:rgb(0,0,0);font-size:medium"> 感谢你阅读这篇文章！</p><p class="gmail-auto-style9" style="font-size:11.5pt;color:rgb(91,102,116)">---</p><p class="gmail-auto-style14" style="font-family:"Microsoft YaHei";color:rgb(0,123,255);font-size:medium">点滴善意，可以照亮世界</p></div>