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Lactation

Method Used to Estimate the Average Requirement

For lactating women, it is assumed that 0.3 mg of riboflavin is transferred in their milk each day when their daily milk production is 0.78 L (during the first 6 months of lactation; see “Infants Ages 0 through 12 Months”). If the use of riboflavin for milk production by the mother is assumed to be 70 percent efficient (WHO, 1965), values are adjusted upward to 0.4 mg/day for the amount of the vitamin that should be replaced. Women who are breastfeeding older infants who are eating solid foods need slightly less, in proportion to lower volume of milk production.

Riboflavin EAR and RDA Summary, Lactation

To the EAR of 0.9 mg/day of riboflavin for the nonpregnant and nonlactating woman, 0.4 mg/day is added, giving an EAR of 1.3 mg/day.

EAR for Lactation

14–18 years

1.3 mg/day of riboflavin

 

19–30 years

1.3 mg/day of riboflavin

31–50 years

1.3 mg/day of riboflavin

The RDA for riboflavin is set by assuming a coefficient of variation (CV) of 10 percent (see Chapter 1) because information is not available on the standard deviation of the requirement for riboflavin; the RDA is defined as equal to the EAR plus twice the CV to cover the needs of 97 to 98 percent of the individuals in the group (therefore, for riboflavin the RDA is 120 percent of the EAR).

RDA for Lactation

14–18 years

1.6 mg/day of riboflavin

 

19–30 years

1.6 mg/day of riboflavin

31–50 years

1.6 mg/day of riboflavin

Special Considerations

As with other B vitamins, persons undergoing hemodialysis or peritoneal dialysis and those with severe malabsorption are likely to require extra riboflavin. Women pregnant with more than one fetus and those breastfeeding more than one infant are also likely to require more riboflavin.



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