Trying to provide food for a society has its issues, such as inefficiencies and losses in agricultural production, processing, and up to the point of consumer purchasing. The sustainability of meeting the nutritional requirements of a growing population can be severely affected by these food losses and the costs that are incurred. Consumer behavior and their willingness to pay for certain food will affect what nutrition they end up getting.
A new study conducted by scientists at the University of Edinburgh, Rural College, University of York, Karlsruhe Institute of Technology and the Centre for Australian Weather and Climate Research, has published their findings in the journal Agricultural Systems. They examined 10 key stages of food production -- from growing, harvesting, up to the consumption -- in order to quantify what the food losses are. The main source of data is from the UN's Food and Agriculture Organization. The losses in global food production are higher than previously estimated.
Embodied harvested crops (without forage crops) through stages in food system in dry matter terms
Current food requirements are being surpassed in food production as the world population consumes about 10% more food than it needs (over-eating). An additional 9% is thrown away or left to spoil (wasted). This totals approximately 20% or 1/5 of the global food supply that is being wasted by being thrown away or overly consumed in our gluttonous pleasure trap. Reducing this loss could vastly improve global food security with more people having access to safe and affordable nutritious food.
Losses of harvested crops (excluding grassland and forage crop inputs to livestock
production) by stage in the food system, using embodied loss rates.
The study found that 50% (2.1 billion tonnes) of harvested crops are lost in over-consumption, consumer waste, and inefficient production. 1.8 billions tonnes of crops are used to feed animals to make 240 million tonnes of carcasses people want to consume thinking they "need" to, when we could plant more types of crops to feed humanity instead, and not need to kill animals who did us no harm. But we just want to keep doing what we did, and also keep increasing it! 100 years ago people were not consuming this amount of animal flesh on the planet compared to the plants they consumed. Animal slaughter amounts to killing over 50 billion land animals each year. We are stuck in the past mentality of survival where we ate animal products to survive due to a lack of agricultural supply, especially in winter. This process is the most inefficient with 78% or 840 million tonnes of losses, and accounts for 40% of all losses of harvested crops.
As the world continues to follow it's gluttony and pleasure trap of "meat tastes good", falsely thinking we "need" it, then sustaining a demand of growing crops to feed animals that we slaughter is not going to be possible. Increasing the crops fed to more animals, to then slaughter them, drastically decreases the efficiency of food production in all areas of growing, harvesting and processing of crops. A growing world population is not sustainable this way.
Trying to meet this unsustainable demand will produce more waste in the environment, gas emissions, and depleting water supply. I takes 100 times more water to produce one pound of beef protein compared to one pound of grain protein. The Food and Agriculture Association (FAO) says "livestock may well be the leading player in the reduction of biodiversity, since it is the major driver of deforestation, as well as one of the leading drivers of land degradation, pollution, climate change, overfishing, sedimentation of coastal areas and facilitation of invasions by alien species."
Eating plants, not over-eating beyond nutritional needs, and reducing the waste of food that is sold or purchased will help slow the growing trend of unsustainable growth.
Lead author of the study, Dr. Peter Alexander, said:
"Reducing losses from the global food system would improve food security and help prevent environmental harm. Until now, it was not known how over-eating impacts on the system. Not only is it harmful to health, we found that over-eating is bad for the environment and impairs food security."
Personally, I pretty much only use a compost for my garbage, and it's only for inedible parts of food. I don't waste much or add much to the regular non-biological garbage, since I also recycle most of the other things like packaging. I also only eat when I'm actually hungry, instead of just eating automatically according to scheduled times of the day that we are "supposed" to eat.
- Fifth of world's food lost to over-eating and waste, study finds
- Peter Alexander, Calum Brown, Almut Arneth, John Finnigan, Dominic Moran, Mark D.A. Rounsevell. Losses, inefficiencies and waste in the global food system. Agricultural Systems, 2017; 153: 190 DOI: 10.1016/j.agsy.2017.01.014
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