A Call for a Low- Carb Diet That Embraces Fat“To my knowledge, this is one of the first long- term trials that’s given these diets without calorie restrictions,” said Dariush Mozaffarian, the dean of the Friedman School of Nutrition Science and Policy at Tufts University, who was not involved in the new study. And that’s really important because someone can change what they eat more easily than trying to cut down on their calories.”Photo. Credit. i. Stock Diets low in carbohydrates and higher in fat and protein have been commonly used for weight loss since Dr. Robert Atkins popularized the approach in the 1. Among the longstanding criticisms is that these diets cause people to lose weight in the form of water instead of body fat, and that cholesterol and other heart disease risk factors climb because dieters invariably raise their intake of saturated fat by eating more meat and dairy. Many nutritionists and health authorities have “actively advised against” low- carbohydrate diets, said the lead author of the new study, Dr. Bazzano of the Tulane University School of Public Health and Tropical Medicine. They had significantly greater reductions in body fat than the low- fat group, and improvements in lean muscle mass — even though neither group changed their levels of physical activity. While the low- fat group did lose weight, they appeared to lose more muscle than fat.“They actually lost lean muscle mass, which is a bad thing,” Dr. Mozaffarian said. Practical tips to help you cut down on the amount of fat in your diet, including saturated fat. Eating a diet that is high in saturated fat can raise the level of.
And that’s a very important finding that shows why the low- carb, high- fat group did so metabolically well.”The high- fat group followed something of a modified Atkins diet. They were told to eat mostly protein and fat, and to choose foods with primarily unsaturated fats, like fish, olive oil and nuts. But they were allowed to eat foods higher in saturated fat as well, including cheese and red meat. A typical day’s diet was not onerous: It might consist of eggs for breakfast, tuna salad for lunch, and some kind of protein for dinner — like red meat, chicken, fish, pork or tofu — along with vegetables. Low- carb participants were encouraged to cook with olive and canola oils, but butter was allowed, too. Audio. Giving Robots That Human Touch, How Trees Really Work, Low Carb Versus Low Fat 2. Robots may already think faster than we do, but they are just starting to be able to move like us; one researcher has set out to prove an 8. David Corcoran, Michael Mason, Joshua A. Poor old saturated fat. For over forty years now, it’s been spoken of only in hushed tones, dissed as nothing but artery clogging, obesity-causing poison. What is a low carb diet, really? When can a low carb diet be beneficial? Should everyone follow a low carb diet? Or, can a low carb diet ruin your health? Krisch and Jeffery Del. Viscio. Over all, they took in a little more than 1. American Heart Association. The majority of their fat intake, however, was unsaturated fats. The low- fat group included more grains, cereals and starches in their diet. They reduced their total fat intake to less than 3. The other group increased their total fat intake to more than 4. Both groups were encouraged to eat vegetables, and the low- carbohydrate group was told that eating some beans and fresh fruit was fine as well. In the end, people in the low- carbohydrate group saw markers of inflammation and triglycerides — a type of fat that circulates in the blood — plunge. Their HDL, the so- called good cholesterol, rose more sharply than it did for people in the low- fat group. Blood pressure, total cholesterol and LDL, the so- called bad cholesterol, stayed about the same for people in each group. Nonetheless, those on the low- carbohydrate diet ultimately did so well that they managed to lower their Framingham risk scores, which calculate the likelihood of a heart attack within the next 1. The low- fat group on average had no improvement in their scores. Photo. Credit. i. Stock The decrease in risk on the low- carbohydrate diet “should translate into a substantial benefit,” said Dr. Allan Sniderman, a professor of cardiology at Mc. Gill University in Montreal. One important predictor of heart disease that the study did not assess, Dr. Sniderman said, was the relative size and number of LDL particles in the bloodstream. Two people can have the same overall LDL concentration, but very different levels of risk depending on whether they have a lot of small, dense LDL particles or a small number of large and fluffy particles. Eating refined carbohydrates tends to raise the overall number of LDL particles and shift them toward the small, dense variety, which contributes to atherosclerosis. Saturated fat tends to make LDL particles larger, more buoyant and less likely to clog arteries, at least when carbohydrate intake is not high, said Dr. Krauss, the former chairman of the American Heart Association’s dietary guidelines committee. Small, dense LDL is the kind typically found in heart patients and in people who have high triglycerides, central obesity and other aspects of the so- called metabolic syndrome, said Dr. Krauss, who is also the director of atherosclerosis research at Children’s Hospital Oakland Research Institute.“I’ve been a strong advocate of moving saturated fat down the list of priorities in dietary recommendations for one reason: because of the increasing importance of metabolic syndrome and the role that carbohydrates play,” Dr. Krauss said. Dr. Mozaffarian said the research suggested that health authorities should pivot away from fat restrictions and encourage people to eat fewer processed foods, particularly those with refined carbohydrates. The average person may not pay much attention to the federal dietary guidelines, but their influence can be seen, for example, in school lunch programs, which is why many schools forbid whole milk but serve their students fat- free chocolate milk loaded with sugar, Dr. Mozaffarian said. Continue reading the main story.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
September 2017
Categories |