A team from the Queensland University of Technology in Australia modeled the properties of this DNT and found that the length of the thread doesn’t significantly affect its strength. The results are presented in a paper uploaded toArXiv.
With the release of the eighth edition of the U.S. government’s Dietary Guidelines expected by year’s end, it seems reasonable to consider—with the “obesity plague” upon us and Americans arguably less healthy than ever before—whether the guidelines are to be trusted and even whether they have done more harm than good.
Many Americans have lost trust in the science behind the guidelines since they seem to change dramatically every five years. In February, for example, the Dietary Guidelines Advisory Committee declared that certain fats and eggs are no longer the enemy and that cholesterol is “not considered a nutrient of concern for overconsumption.” This, after decades of advising Americans to “watch their cholesterol.”
Such controversy is nothing new. U.S. Dietary Guidelines were first released by the Agriculture Department and the Department of Health and Human Services in 1980. One nutrition expert at the time, Edward “Pete” Ahrens, a groundbreaking researcher on fat and cholesterol metabolism, called the guidelines “a nutritional experiment with the American public as subjects . . . treating them like a homogeneous group of Sprague-Dawley rats.”
The original goals were to: 1) increase Americans’ carbohydrate consumption to 55%-60% of caloric intake; 2) reduce fat consumption to less than 30% from 40% of caloric intake; 3) reduce saturated fat to 10% of calories and increase poly- and monounsaturated fats each to 10% of calories; 4) reduce cholesterol intake to less than 300 milligrams a day; 5) reduce sugar intake by 40%; and 6) reduce salt consumption by 50%-80%.
These six goals, viewed in the context of what we know today, could hardly be more misdirected.
If only we could hold them liable the way we would if they were pharmaceutical companies that produced similarly defective and harmful products.
"Today's robots are very primitive, capable of understanding only a few simple instructions such as 'go left', 'go right', and 'build car'." --John Sladek