High-fructose corn syrup is the principal sweetening agent in most high-sugar soft drinks. Fructose provides the sweet taste in fruits. In sedentary people, it is linked to an increased risk of the metabolic syndrome (abdominal obesity, abnormal blood fats, high blood pressure, poor blood sugar regulation, inflammation and blood-clotting abnormalities). People consume about 300 more calories per day more than they did 30 years ago, largely because of an increased intake of fructose. A report published in Current Sports Medicine Reports, stated that a high fructose intake was beneficial for athletes. Fructose stimulates the digestion and promotes carbohydrate used during exercise, which are important for optimal performance. Intense training involves high energy expenditure, which protects athletes from the negative effects of fructose experienced by sedentary people.
Abdominal fat deposition is a sign of poor metabolic heath. It is an important symptom of the Metabolic Syndrome that includes insulin resistance, abnormal blood fats, high blood pressure, any type II diabetes. Researchers from Boston University School of Medicine found that midlife abdominal obesity increased the risk of dementia. CT scans of the abdomen and brains of 733 older adults (average age of 60) showed that those with more abdominal fat had the greatest rates of brain deterioration.