The idea that calorie counting is the key to weight loss has long been placed in the government's diet guidelines. It is the driving force behind public health policies, such as the number of mandatory calories on restaurant menus and food labels. Many experts say that the underlying cause of the obesity epidemic is that Americans eat too many calories of all kinds, have easy access to cheap and highly delicious food, and they need portion control. For example, the National Institutes of Health encourages people to count calories and warns that the fat of the diet receives more calories than protein or carbohydrate per gram:, To prevent extra calories, you need to limit the oils Örneğin.
But Dr. Experts such as Ludwig, obesity epidemic, sugar, fruit juices, pretzels, white bread, pasta and heavy processed cereals, such as carried out by refined carbohydrates, they say. These foods tend to shake a hormone that supports blood glucose and insulin, fat storage, and can increase appetite. Dr. Ludwig et al. Cara Ebbeling published studies showing that diets with different proportions of carbohydrates and fats have very different effects on hormones, hunger and metabolism of the same amount of calories. He also wrote a best-selling book on low-carbohydrate diets.
Hall and others disagree. They have published studies that object to the idea that carbohydrate diets accelerate metabolism and fat loss. Hall says that low-carb diets have many benefits: they can help people with type 2 diabetes, for example, to manage their blood sugar levels. However, for obesity, the description of carbohydrates and insulin is very simple and claims to be açık experimentally falsified u in rigorous studies.
Hall published a meta-analysis of nutritional studies last year, suggesting that energy consumption is actually slightly larger in low-fat diets. But Dr. Ludwig said that these studies were very short, none of them lasted longer than a month, and lasted a week or less. He said that adaptation to a low-carb diet could take a month or more.
Edi A few days or weeks are not enough time to make a meaningful conclusion about how diets affect metabolism in the long term, “he added.
To make a new study, Ludwig and his colleagues collaborated with Framingham State University about 20 miles outside of Boston, where they hired overweight students, staff, and faculty. Each participant passed two phases of the study. First, they were subjected to strict diets that reduced their body weight by 12 percent, which was designed to enforce their metabolism.
Iyor At this point, their body is trying to gain weight, Lud Ludwig said. K He pushes the body and is prone to regain weight. “