It seems to be commonly accepted that cows are bad for the environment (methane emissions contributing to global heating, soil damage) and are a drain on resources that could be put to better use (grains, water). These hypotheses are false when scrutinised objectively. Furthermore, their opposites are true – cattle can be beneficial to the
When the Dietary Guidelines for Americans (DGA) were first proposed in 1980, they were already oriented away from meat and towards plants. As each iteration of the guidelines was produced (at 5-yearly intervals) this trend was reinforced. So much so that, during the development of the 2015 guidelines, there was a discussion among the committee
It probably started when medical authorities put the blame for heart disease (atherosclerosis) on circulating cholesterol. In the modern era, this goes back to the 1950s or before, when heart disease was still relatively rare, but increasing. Heart disease became publicly prominent in 1955, when US President Eisenhower suffered a heart attack (which he survived).
Briefly, the cholesterol hypothesis proposes that by getting into arterial walls and causing atherosclerosis (plaque buildup in arteries), cholesterol increases the risk of cardiovascular disease (CVD) and cerebrovascular disease (strokes). However, according to a perhaps unlikely source – the American Heart Association: “Exactly how atherosclerosis starts or what causes it isn’t known.” That’s an admission
As long ago as 2005 an audit of just 18 patients, admitted to an emergency department, reported that there were 3,679 pages of clinical guidelines associated with their conditions. Imagine what it is like 13 years later. What started out as support for evidence-based medicine, and as a means for clinicians to keep abreast of