Fluoride supplements are recommended by the FDA for what reason?

Fluoride supplements are recommended by the FDA primarily due to their effects on dental caries prevention, especially in populations that do not have access to fluoridated water. When discussing the specific effects related to pregnancy and fetal development, it is acknowledged that fluoride can pass through the placenta and increase fetal plasma fluoride levels. However, this increase does not necessarily translate into significant benefits for children postnatally, especially if they are already receiving fluoride through other sources, such as community water supplies or dietary sources.

The importance of option C lies in the understanding that while fluoride may reach the fetus and affect plasma levels, the direct benefits for the child after birth are minimal when considering optimal fluoride exposure from multiple avenues. This nuanced perspective helps guide recommendations regarding fluoride use for pregnant individuals, emphasizing careful consideration of dosage and sources. The established guidelines reflect a balance between the benefits of fluoride in caries prevention and the potential for excessive exposure in young children. Thus, recommending fluoride during pregnancy takes into account fetal exposure and potential effects while recognizing the limited additional benefits for children.