The Practical Side

There are two issues here. First, health of the body, and second, health of the environment. The two are intertwined and difficult to separate. Here are some environmental concerns:

• Fish farming was designed to help prevent food shortages. But, fish farms are contaminating the wild fish. Fish farms use a net tank which contains the fish in a relatively small area of either an ocean or a lake. The environmental concern is that the fish become very unhealthy from improper diet and are prone to develop many fish diseases. There are four types of fish diseases. Farmed fish often exhibit all 4 types at the same time which is seldom if ever found in wild fish. Plus, lice grows rampant on them too. Because they are in the same ocean water as the wild fish, these diseases can migrate to the surrounding wild fish. Nutritionally, farmed fish are quite inferior, especially in omega 3 oil content, and they lack the natural colors they usually get in their natural wild diet by eating krill.
• Cattle raised in grain feedlots produce more gaseous waste as methane, a greenhouse gas. Beef from cattle raised on grass is a health food, while corn grain feedlot raised cattle produce an inferior beef that generates conditions in the body that can lead to disease. The omega 3 to 6 balance is altered in a negative matter and beef and milk loose most of their CLA content. ref It appears the CLA producing bacteria grows abundantly on grass but not on grains. Could the introduction of a high grain diet also influence the human intestinal bacterial makeup and affect health? And, there is still the issue of increased IGF-1, an insulin growth hormone that is increased in milk production from cows on the growth hormone, rBST.