Debbie: newest amer acad of ped is NO fluoride for bf infants for I beleive the first 6 months...it is not necessary. k is clotting factor and the tie is to concern of hemorage I believe...I only follow the edge of this one....with boys it is certianly important as circ's are usually before thier clotting fator is working which is day 8. d need is seen in dark skined persons who cover themselves and do not expose the body or face to the sun. patricia