In your liver, excess calories from glucose and fructose are used for the production of triglycerides, and some of the triglycerides are shipped into your blood with lipoproteins. Lipoproteins then distribute the triglycerides throughout your body. Thus, extra calories from sucrose- and fructose-sweetened foods can increase fat accumulation in your blood, liver, muscles and fatty tissues, which increases your risk for developing diabetes and heart disease. If you like sugar-sweetened foods, don’t overeat them, and make sure that you are consuming these foods along with healthier alternatives containing fiber such as whole-grain foods, vegetables and fruits.