The attack upon meat and dairy is now based upon carbon dioxide and nitrogen production, which has been extensively criticised in past posts at this blog. But before that the attack upon dairy in particular was based upon the saturated fat content, with cholesterol allegedly leading to heart disease. This was seen in the attack upon butter, with margarine being put up as a healthy substitute, which has proven not to be so at all.
What recent evidence has shown is that saturated fats are not all bad, and are in fact are needed for human health, being necessary for many biochemical processes in he body, such as hormone production. As outlined by Dr Mercola, dairy products, such as heptadecanoic acid in butter fat, may lower the risk of strokes. Eating high-fat cheese raises the high-density lipoprotein cholesterol, which is protective against heart disease. So, the attack upon dairy is misplaced.