According to Reuters, researchers at the Harvard School of Public Health in the United States have conducted a follow-up study of diabetes incidence and eating habits for 200,000 people for up to 24 years. These participants enrolled in three large-scale research programs and filled out questionnaires about the frequency, type, and amount of specific foods consumed. None of them had diabetes at the beginning of the study, and a total of 12,600 people were diagnosed with the disease during the study.
Researchers found that people who ate at least five apples a week had a 23% lower risk of developing type 2 diabetes than those who did not eat apples. People who ate blueberries at least twice a week also had a 23% lower risk of diabetes compared to people who did not eat blueberries.
Apples and blueberries are rich in natural compounds flavonoids, a powerful antioxidant that is found in fruits, vegetables, and cereals. Studies have shown that flavonoids are good for human health and reduce the risk of heart disease and cancer. Researchers believe that although fructose can quickly raise glucose levels in the blood, both fiber and pectin in fruits are good for human health, but a recent study suggested that drinking fruit juice may increase the risk of diabetes. Therefore, people should choose to eat fresh fruit instead of drinking fruit juice.