3 ms·Is that enough to lower intelligence? I couldn’t seem to figure it out from the paper.by mrfusion 8y agoIs that enough to lower intelligence? I couldn’t seem to figure it out from the paper.asdffinio 8y agoThe authors of the paper wouldn't claim to know. They measured levels in urine and have no idea where that fluoride came from.ashildr 8y agoMaybe if you change your brand of toothpaste you will?