10. High-calorie coffee drinks Coffee contains several biologically active substances, especially the caffeine . These chemicals can boost your metabolism and increase fat burning , at least in the short term . However, the negative effects of adding unhealthy ingredients like artificial cream and sugar outweigh these positive effects. High-calorie coffee drinks are actually no better than sodas. They are loaded with empty calories that can equal an entire meal. If you love coffee, it's best to stick to regular black coffee when trying to lose weight . Add a little cream or milk, it's good too. Just avoid adding sugar, high calorie creams and other unhealthy ingredients. 11. Foods high in added sugar Added sugar is probably the worst thing in the modern diet. Excess amounts are now linked to some of the most serious diseases in the world . Foods high in added sugar usually provide tons of empty calories, but aren't very filling. Examples of foods that may contain massive amounts of added sugar include cereals sweet for the breakfast, granola bars and low-fat flavored yogurt. You need to be especially careful when choosing "low-fat" or "fat-free" foods, as manufacturers often add a lot of sugar to compensate for the flavor lost when the fat is removed. As a general rule and for your well-being, try to eat a healthy and balanced diet .