Skip to main content

Table 2 Environmental impacts and cost of the Mediterranean diet pattern (n=17,079)

From: Greater adherence to the Mediterranean diet pattern in the United States is associated with sustainability trade-offs

 

Mediterranean Diet Scorea

Impact

Quintile 1 (n=3,977)

Quintile 2 (n=3,832)

Quintile 3 (n=3,782)

Quintile 4 (n=2,852)

Quintile 5 (n=2,636)

P-trendb

Mean (95% CI) per capita per day

Greenhouse gas emissions (kg CO2eq)

5.90 (5.76-6.05)

5.40 (52-5.5.28)

5.09 (4.9-5.27)

4.68 (4.55-4.81)

4.40 (4.2-4.61)

<0.001

Cumulative energy demand (MJ)

28.42 (27.75-29.09)

26.89 (26.24-27.54)

27.28 (26.59-27.98)

27.00 (26.2-27.8)

29.50 (28.16-30.83)

0.336

Water scarcity footprint (L eq × 102)

32.77 (31.58-33.95)

34.74 (33.5-35.98)

36.63 (35.29-37.96)

39.81(38.26-41.37)

44.42 (42.6-46.23)

<0.001

Land use (m2)

22.28 (21.39-23.18)

19.49 (18.34-20.63)

17.50 (16.42-18.59)

14.96 (14.01-15.91)

11.28 (10.28-12.27)

<0.001

Fertilizer nutrient use (kg × 10-3)

93.62 (91.77-95.47)

87.42 (85.28-89.56)

84.47 (82.32-86.61)

79.57 (77.55-81.6)

72.59 (70.72-74.47)

<0.001

Pesticide use (kg × 10-3)

2.49 (2.42-2.56)

2.42 (2.33-2.51)

2.38 (2.3-2.46)

2.31 (2.24-2.39)

2.18 (2.1-2.27)

<0.001

Diet cost (US $)

15.34 (14.8-15.89)

16.28 (15.68-16.89)

16.25 (15.72-16.78)

17.66 (17.11-18.22)

18.64 (17.96-19.32)

<0.001

  1. All results were adjusted for kcal, and survey cycle using linear regression models
  2. CO2eq Carbon dioxide equivalent, L eq Liter equivalent
  3. aMinimum possible score=0, maximum possible score=10
  4. bWald test for linear trend using regression analysis adjusted for kcal and survey cycle