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zation, and they tend to lose lean body mass over time (Gaffney-Stomberg et al., 2009).

Selected Nutrients with an Adequate Intake

Intakes of selected nutrients that have an Adequate Intake (AI) rather than an EAR are shown in Table 5-3, by age group and gender, along with the respective AI. The mean and median NHANES (2003–2004) intakes for calcium, potassium, and fiber are lower than the AI for most of these adult age-gender groups, suggesting that the majority of individuals do not meet this target recommendation. Women have lower intakes than do men, with mean and median potassium intakes less than half the α-linoleic and α-linolenic acid intakes are close to the AI on average.

TABLE 5-3 Comparison Between Median Nutrient Intakes from NHANES (2003–2004) and the Adequate Intake (AI), by Age Group (in years) and Gender

 

19–59 Years

≥ 60 Years

 

Males

Females

Males

Females

Calcium (mg/d)

 

 

 

 

AI

1,044

1,044

1,200

1,200

Mean intake

1,068

790

846

702

Median intake

1,003

758

798

654

Potassium (mg/d)

AI

4,700

4,700

4,700

4,700

Mean intake

3,182

2,342

2,866

2,327

Median intake

3,112

2,292

2,787

2,290

Fiber (g/d)

 

 

 

 

AI

36.2

24.1

30.0

21.0

Mean intake

17.3

13.4

16.4

13.8

Median intake

16.3

12.7

15.7

13.4

Linoleic acid (g/d)

 

 

 

 

AI

16.3

11.8

14.0

11.0

Mean intake

18.8

14.2

15.1

12.3

Median intake

17.9

13.4

14.2

11.5

α-linolenic acid (g/d)

 

 

 

 

AI

1.6

1.1

1.6

1.1

Mean intake

1.9

1.4

1.5

1.3

Median intake

1.8

1.3

1.4

1.2

NOTES: AI = Adequate Intake; g/d = grams per day; mg/d = milligrams per day. Bold font indicates mean intake values lower than the AI.

SOURCES: Intake data from NHANES 2003–2004. The AIs used in the analysis were from the DRI reports (IOM, 1997, 2002/2005, 2005). AIs shown for the 19–59-year-old age group are weighted averages of two DRI age groups.



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