Word: dieting
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Dates: during 1970-1979
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...Complete Scarsdale Medical Diet, Tarnower & Baker...
...sour cream-topped baked potato for dinner Typical of the American lifestyle, such fatty, cholesterol-rich foods have long been cited by doctors as the primary cause of coronary artery disease, the nation's No. 1 killer. To keep the arteries unclogged, they have been urging a diet low in fats, stressing vegetables, poultry and fish over beef, eggs and dairy products...
...vigor of their message has tended to obscure the fact that the "diet-heart hypothesis," as the cholesterol link with coronary disease is known, remains a theory and the subject of heated debate. True, studies have established that high cholesterol levels in the blood are associated with increased heart disease. But, admits Dr. Basil Rifkind, chief of the lipid metabolism branch of the National Heart, Lung and Blood Institute, "what's missing is the proof that you can prevent heart disease by reducing cholesterol...
Proposed in 1969 by Pathologist Kilmer McCully, then of Harvard, this thesis also implicates diet, but the villain is protein. Methionine, an amino acid, is broken down by the body into homocysteine, a chemical that promotes atherosclerosis (or the buildup of plaque in the arteries) in lab animals. According to the theory, it is converted by vitamin B6 into an innocuous byproduct, but if there is a deficiency of B6, homocysteine piles up in the blood and causes atherosclerosis. In the view of the theory's proponents, Americans are vulnerable to heart disease because the protective vitamin, which...
...colleagues are working with a herpes virus that produces in chickens a variety of tumors known as Marek's disease. The scientists found that it also causes atherosclerotic lesions in heart arteries. But, intriguingly, virustree chickens do not develop heart disease even when fed a high cholesterol diet. Fabricant speculates that something similar may happen in humans as well...