Healthy eating tip 3: Reduce sugar Aside from portion size, perhaps the single biggest problem with the modern Western diet is the amount of added sugar in our food. As well as creating weight problems, too much sugar causes energy spikes and has been linked to diabetes, depression, and even an increase in suicidal behaviors in young people. Reducing the amount of candy and desserts you eat is only part of the solution as sugar is also hidden in foods such as bread, cereals, canned soups and vegetables, pasta sauce, margarine, instant mashed potatoes, frozen dinners, low-fat meals, fast food, and ketchup. Your body gets all it needs from sugar naturally occurring in food so all this added sugar just means a lot of empty calories.