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TABLE 6-8 Sodium Content of Human Milk

References

Study

Stage of Lactationa

Sodium Concentration (g/L)b

Gross et al., 1980

18 women

1 mo pp

0.20

Picciano et al., 1981

26 women

1 mo pp

0.15

 

2 mo pp

0.12

3 mo pp

0.13

Keenan et al., 1982

14 women

3.5–6 wk pp

0.18

 

14 women

8.5–18 wk pp

0.11

12 women

20–32 wk pp

0.12

Lemons et al., 1982

7 women

1 mo pp

0.16

 

13 women

1.5 mo pp

0.20 (preterm)

9 women

> 2 mo pp

0.16 (preterm)

Dewey and Lonnerdal, 1983

20 women

1 mo pp

0.23

 

2 mo pp

0.26

3 mo pp

0.18

4 mo pp

0.18

5 mo pp

0.17

6 mo pp

0.13

Morriss et al., 1986

52 women

3 wk pp

0.17

 

5 mo pp

0.11

a pp = postpartum.

b Bold values also used in determining sodium concentration for months 7 through 12.

Sodium and Chloride AI Summary, Ages 0 Through 12 Months

AI for Sodium for Infants

0–6 months

0.12 g (5 mmol)/day of sodium

7–12 months

0.37 g (16 mmol)/day of sodium

AI for Chloride for Infants

0–6 months

0.18 g (5 mmol)/day of chloride

7–12 months

0.57 g (16 mmol)/day of chloride

Infant Formula

Current regulations for infant formulas are a minimum of 20 mg/100 kcal (≈ 0.14 g [5.9 mmol]/L for sodium content based on 676 kcal/L) to a maximum sodium content of 60 mg/100 kcal (0.40 g



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