To understand the enormity of the problem it is necessary to examine the biology of the world's food chain. and the way it has been distorted and manipulated to serve the interests of a select few.
Let's consider a simple chain like : Grass, Grasshoppers, frogs, trout, and humans.
At each stage of the chain there is a loss of energy:
it takes energy to eat grass, to digest it, to catch a grasshopper etc.
In the process of catching and devouring prey, scientists have estimated about 80% to 90% of the available energy is lost as heat to the environment.
In other words only 10 to 20% of the energy is passed on to the next stage of the chain.
If we assume that you need 300 trout to support a human for a year, those 300 trout would need consume 90,000 frogs, which would need 27 million grasshoppers. Those 27 million grasshoppers would live off 100 tons of grass.
With this in mind it is not difficult to fathom the dire consequences of a beef industry that completely lost its way when it moved from grass to grain fed. Cattle are among the most inefficient converters of energy. it takes 9 pounds of feed to make a one pound gain in a feedlot steer, six pounds of which is grain. By the time this animal is ready for slaughter, it has consumed 2700 pounds of grain and weighs approx. 1000-1100 pounds. Currently in the United States alone, some 200 million metric tons of cereal, legumes, and vegetable protein suitable for human use is fed to to livestock to produce some 30 metric tons of animal protein which humans consume annually.
But!! There are several breeds of cattle that can be perfectly raised on grass alone (Limousin, Highland) and which can make excellent use of land not suitable for other food production.
Note: Beef raised on pasture, with no or hardly any grain is higher in Omega 3, while grain fed beef is high in Omega 6
In 1963 it was discovered that the omega-6 was converted by the body into pro-inflammatory agents called prostaglandins. By 1979 more of what are now known as eicosanoids were discovered: thromboxanes, prostacyclins and the leukotrienes. The eicosanoids, which have important biological functions, typically have a short active lifetime in the body, starting with synthesis from fatty acids and ending with metabolism by enzymes. However if the rate of synthesis exceeds the rate of metabolism, the excess eicosanoids may have deleterious effects. Researchers found that omega-3 is also converted into eicosanoids, but at a much slower rate. Eicosanoids made from omega-3 fats often have opposing functions to those made from omega-6 fats (ie, anti-inflammatory rather than inflammatory). If both omega-3 and omega-6 are present, they will "compete" to be transformed, so the ratio of omega-3:omega-6 directly affects the type of eicosanoids that are produced.
This competition was recognized as important when it was found that thromboxane is a factor in the clumping of platelets, which leads to thrombosis. The leukotrienes were similarly found to be important in immune/inflammatory-system response, and therefore relevant to arthritis, lupus, and asthma. These discoveries led to greater interest in finding ways to control the synthesis of omega-6 eicosanoids. The simplest way would be by consuming more omega-3 and fewer omega-6 fatty acids.
We all know that the clumping of the platelets is the major cause of a heart attack or a stroke.