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Original heme by orderedlist (CC-BY-SA)


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CO2 and Water Usage of Food Consumed

Diet Per Capita Yearly CO2 Emission $(\frac{kg}{(cap)(yr)})$ Per Capita Yearly Water Consumption $(\frac{kg}{(cap)(yr)})$
American Omnivore 1422.96 756.97
American Vegetarian 515.53 275.21
American Vegan (2 cup almond milk replacement) 449.97 491.80
American Vegan (2% almond milk replacement) 449.97 231.60

Worked calculations

Type Per Capita Yearly Consumption $(kg)$ Per Capita Yearly CO2 Emission $(\frac{kg}{(cap)(yr)})$ Per Capita Yearly Water Consumption $(\frac{kg}{(cap)(yr)})$
Meat (beef) 25.85 742.67 324.68
Meat (pork) 23.04 134.78 102.76
Meat (poultry) 109.6 451.55 261.94
Milk (cow) 67.59 93.95 67.59
w = 25.85 + 23.04 + 109.6 = 158.49
milk = 67.59

omni_co2 = (25.85*28.73) + (23.04*5.85) + (109.6*4.12) + (milk*1.39)
omni_h2o = (25.85*12.56) + (23.04*4.46) + (109.6*2.39) + (milk*1)

veg_co2 = w*2.66 + milk*1.39
veg_h2o = w*1.31 + milk*1

vegan_co2_0 = w*2.66 + milk*0.42
vegan_h2o_0 = w*1.31 + milk*(17.74*.237)

vegan_co2_1 = w*2.66 + milk*0.42
vegan_h2o_1 = w*1.31 + milk*(17.74*.02)

The following additional notes should be considered:

References

"Per Capita Consumption of Poultry and Livestock, 1965 to Estimated 2019, in Pounds"

Year Beef (lbs) Pork (lbs) Total Poultry (lbs)
208 57.0 50.8 109.6

This implies 25.85kg of beef, 23.04kg of pork and 49.71kg of poultry for the average American.

"Dairy Data"

The per capita consumption of dairy for Americans:

Year Milk Consumption (lbs)
2017 149

149 pounds per person per year is about 67.59kgper person per year.

"Food consumption patterns and their effect on water requirement in China" by J. Liu and H. H. G. Savenije

Food Water footprint $(\frac{m^3}{kg})$ Per capita annual food consumption (2003) $(\frac{kg}{(cap)(yr)})$
Rice 1.31 79
Wheat 0.98 61
Maize 0.84 15
Soybeans 3.20 7
Vegetables 0.19 270
Fruits 0.50 50
Beef 12.56 5
Pork 4.46 35
Poultry 2.39 11
Milk 1.00 17

"Systematic review of greenhouse gas emissions for different fresh food categories" by Stephen Clune, Enda Crossin, Karli Verghese

Food Mean $\frac{(kg) (CO2\ eq)}{kg}$ (2015?)
Rice 2.66
Wheat 0.51
Maize 0.63
Soybeans 0.58
Vegetables 0.47
Fruits 0.50
Beef 28.73
Pork 5.85
Chicken 4.12
Milk 1.39
Almond/coconut milk 0.42

"The green, blue and grey water footprint of crops and derived crop products" by M. M. Mekonnen and A. Y. Hoekstra

Food Global average water footprint $(\frac{m^3}{ton})$ (1996-2005) Global average water footprint ($\frac{m^3}{kg}$ (1996-2005))
Almonds 16095 17.74

How many ounces of almonds go into making each half-gallon of almond milk (example: Silk or Almond Breeze brand)?

As a conservative estimate of the almonds used in almond milk:

As a potentially more realistic estimate of the number of almonds used in almond milk:

Greenhouse Gas Emissions from a Typical Passenger Vehicle

$4600 \frac{kg}{yr}$ of CO2 emissions for the typical US passenger vehicle.

"Almond milk: quite good for you – very bad for the planet" by Emine Saner

"Your Almond Habit Is Sucking California Dry" by Tom Philpott

"Lay Off the Almond Milk, You Ignorant Hipsters" by Tom Philpott

"Almond Milk is Taking a Toll on the Environment"

2019-04-02