Table 2 Dietary GHG emissions (CO2, CH4 and N2O) by diet group, standardized to 2,000 kcal and by age and gender

From: Vegans, vegetarians, fish-eaters and meat-eaters in the UK show discrepant environmental impacts

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)

  1. 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.
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