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Table 1 Human protein requirements (RDA)

From: Hair for brain trade-off, a metabolic bypass for encephalization

Age, years

Protein requirement

g/kg/d

Mean g/d

Neonates, 0 - 0.5a

1.52

5

Age 1-3a

1.1

16

Age 4-18a

0.95

40

Adultsa

0.80

56

Pregnant and lactatinga

1.55

110

Athletesa

1.2-1.8

90-130

Athletesb

3.1

220

  1. aFAO/WHO/UNU (2002).
  2. bLemon (1996); ADA Report (2000); Burke (2001); Barr and Rideout (2004); Volek et al. (2006).
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