Recent studies have
shown that the consumption of meat and animal products in on the rise across
the globe. While a few places, such as Iceland and Mongolia, have seen slight
decreases in meat consumption, other areas including India and China have seen sky-rocketing
increases. In these regions, the booming economy has allowed people to pull
themselves out of poverty, allowing their diets to change from little more than
rice to including a lot of seafood and meats.
A work published in the Proceedings of the National Academy of Sciences revealed the extent
of the increase. The study described mankind’s food consumption in comparison
to other types of consumers on the food chain. This is done on what’s called a
trophic scale, labeled from one to five. A one on the scale corresponds to the
plants and algae that make their own food/energy. Level two relates to the
animals that eat the plants, or herbivores. The animals that eat the herbivores
are considered level three, and those animals that eat them are at level four
(including fish such as cod that eat other fishes). Level five is reserved for
the lucky few that have no predators coming after them for a meal: the top of
the food chain.
In 2009, our humanity’s trophic level was
estimated to be at 2.21, placing us in with the lower omnivores. However, in
the past four years, that number has increased by about .06 globally, and is
currently the highest it has ever been. Not including India and China in the
mix, the rest of the world sits just above 2.30. Don’t let these small numbers
fool you. The small, 3% increase that has been seen in the past 40 years has a
major impact on our ecosystem. In 2006, the livestock industry was directly
responsible for about 18% of greenhouse gas emissions. In addition, the water and
land use to raise livestock and produce meat products is far greater than that
of vegetation.
If this trend continues, it could have major
impacts on our ecosystem. Think about this next time you prepare a meal.
Cutting out all meat from your diet is not necessary, but incorporating
plant-based proteins to replace meat a couple days per week may be a good idea
for both your wallet and the ecosystem.
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