Table 2 Meta-analysis summary estimates of breast milk composition per 100 milliliters at various postnatal ages (mean (+/−2 standard deviations))
From: A systematic review and meta-analysis of the nutrient content of preterm and term breast milk
Preterm | Energy (kcal) | Protein (g) | Fat (g) | Calcium (mg) | Phosphorus (mg) |
|---|---|---|---|---|---|
1st week | 60 (45–75) | 2.2 (0.3-4.1) | 2.6 (0.5-4.7) | 26 (9–43) | 11 (1–22) |
2nd week | 71 (49–94) | 1.5 (0.8-2.3) | 3.5 (1.2-5.7) | 25 (11–39) | 15 (8–21) |
Week 3/4 | 77 (61–92) | 1.4 (0.6-2.2) | 3.5 (1.6-5.5) | 25 (13–36) | 14 (8–20) |
Week 10/12 | 66 (39–94) | 1.0 (0.6-1.4) | 3.7 (0.8-6.5) | 29 (19–38) | 12 (8–15) |
Term | Energy (kcal) | Protein (g) | Fat (g) | Calcium (mg) | Phosphorus (mg) |
1st week | 60 (44–77) | 1.8 (0.4-3.2) | 2.2 (0.7-3.7) | 26 (16–36) | 12 (6–18) |
2nd week | 67 (47–86) | 1.3 (0.8-1.8) | 3.0 (1.2-4.8) | 28 (14–42) | 17 (8–27) |
Week 3/4 | 66 (48–85) | 1.2 (0.8-1.6) | 3.3 (1.6-5.1) | 27 (18–36) | 16 (10–22) |
Week 10/12 | 68 (50–86) | 0.9 (0.6-1.2) | 3.4 (1.6-5.2) | 26 (14–38) | 16 (9–22) |