Table 2.
Dietary GHG emissions (CO2, CH4 and N2O) by diet group, standardized to 2,000 kcal and by age and gender
| Diet group | GHG emissions | ||
|---|---|---|---|
| CO2 (kg d−1) | CH4 (g d−1) | N2O (g d−1) | |
| Vegans | 2.16 (1.81, 2.94) | 4.39 (3.13, 6.37) | 0.71 (0.54, 1.01) |
| Vegetarians | 3.33 (2.57, 4.46) | 20.21 (15.82, 40.45) | 0.98 (0.68, 1.43) |
| Fish-eaters | 3.81 (3.00, 4.92) | 22.55 (17.84, 43.63) | 1.09 (0.76, 1.52) |
| Low meat-eaters | 4.21 (3.25, 5.40) | 28.99 (23.48, 52.41) | 1.29 (0.94, 1.76) |
| Medium meat-eaters | 5.34 (3.86, 7.33) | 40.88 (32.83, 68.24) | 1.73 (1.25, 2.36) |
| High meat-eaters | 7.28 (4.9, 12.23) | 65.40 (51.45, 113.89) | 2.62 (1.76, 3.90) |
Results presented for all adults (N = 55,504). All results are presented as median (2.5th percentile, 97.5th percentile) from a Monte Carlo analysis with 1,000 iterations.