Table 1.

Successive protein requirements and recommendations by international groups to ensure nitrogen balance in adults.

Age	Recommended Dietary Protein (g/kg/d)	Reference
Adults	0.8	[2]
Adults (men and women)	0.83	[16,17]
Children
(<19 years)	0.85–1.2	[18]
(6 months–18 years)	0.82–1.31 (f) 0.85–1.31 (m)	[16,17]
(0–6 months)	1.14–1.77	[16,17]
Individuals with chronic illness/malnourished	1.2–2.0	[19]
Older adults	1.00–1.30	[20]
Athletes	1.3–1.7	[21]
Vegetarians	0.99	[22]