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Other Life Stage Groups

Infants. For infants, the UL was judged not determinable because of insufficient data on adverse effects in this age group and concern about the infant’s ability to handle excess amounts. To prevent high levels of intake, the only source of intake for infants should be from food and formula.

Children and Adolescents. There are no reports of boron toxicity in children and adolescents. Given the dearth of information, the UL values for children and adolescents are extrapolated from those established for adults. Thus, the adult UL of 20 mg/day of boron was adjusted for children and adolescents on the basis of relative body weight as described in Chapter 2 using reference weights from Chapter 1 (Table 1-1). Values have been rounded.

Pregnancy and Lactation. Because the UL is based on adverse reproductive effects in animals and because there are no reports of boron toxicity in lactating females, the UL for pregnant and lactating females is the same as that for the nonpregnant and nonlactating female.

Boron UL Summary, Ages 0 through 18 Years, Pregnancy, Lactation

UL for Infants

0–12 months

Not possible to establish; source of intake should be from food and formula only

UL for Children

1–3 years

3 mg/day of boron

4–8 years

6 mg/day of boron

9–13 years

11 mg/day of boron

UL for Adolescents

14–18 years

17 mg/day of boron

UL for Pregnancy

14–18 years

17 mg/day of boron

19–50 years

20 mg/day of boron

UL for Lactation

14–18 years

17 mg/day of boron

19–50 years

20 mg/day of boron



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