For most people, processed, low-quality carbs are dietary staples. They make up 42 percent of all the calories that Americans consume. They include the packaged foods that dominate many supermarket shelves and household dinner tables, like white bread, pastries, pasta, bagels, chips, crackers and foods with added sugars, such as breakfast cereals, flavored yogurts, desserts, juices and soft drinks.
Studies show that the fiber in these foods has multiple benefits. It promotes satiety, which helps you feel full. It nourishes the microbes that make up your gut microbiome, which can lower inflammation and protect against chronic diseases. And it improves your blood sugar control and cholesterol levels
A large meta-analysis in the Lancet examined the health effects of eating different types of carbs. The analysis, based on data collected from 4,635 people in 58 clinical trials, showed that adults who ate the highest levels of whole grains, vegetables and other fiber-rich carbs had a 15 to 31 percent reduction in diabetes, colorectal cancer and their risk of dying from a stroke or heart disease compared to people who ate the lowest amounts of these foods.
On average, Americans eat five servings a day of foods with refined grains, like white bread and pasta, and just one serving a day of foods that are whole grain, like brown rice and barley, said Fang Fang Zhang, a nutrition epidemiologist at the Friedman School of Nutrition Science & Policy at Tufts University and author of a study in JAMA that examined the types of carbs and macronutrients that Americans consume.
In her research, Zhang found that Americans have been cutting back on their intake of sugary sodas and other foods with added sugar, thanks to growing public awareness about the damaging health effects of sugar.
These foods have been stripped of their fiber, vitamins and minerals and industrially converted into flour and sugar. This causes them to be rapidly absorbed by the body, prompting blood sugar and insulin levels to spike and activating reward regions in the brain, all of which can lead to cravings, overeating and a cascade of metabolic changes that lead to poor health.
If your goal is to lose weight and improve your metabolic health, you don’t need to count calories or go on a restrictive diet. Just start by cutting the empty carbs from your diet. Here’s how to do it:
This approach worked whether people followed a diet that was relatively low in fat or relatively low in carbs. The findings showed that for weight loss, diet quality trumped diet quantity, said Christopher Gardner, the director of nutrition studies at the Stanford Prevention Research Center, who has studied the effects of different diets on metabolic health and weight loss.
In Latin American cuisine, red, black and pinto beans are staples. In the Middle East, people have been using chickpeas and sesame seeds to make hummus and other dishes for centuries. In India, red and yellow lentils can be found in delicious dal, soups and stews. And in the Mediterranean, many dishes incorporate things like fava beans, cannellini beans and split peas.
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