Sugar is incredibly addictive, non-nutritious yet high in caloric content, unfilling, causes highs and crashes reminiscent of drugs, and overuse of sugar in modern food is a major promoter of obesity. As with all types of food, sugar is fine in moderation. I consume plenty of sugar. However, if you rely on it too much for your daily calories then you won’t get enough of any other macronutrients such as fat, protein, and fiber, and you’ll get almost no micronutrients like vitamins. Sugar is also converted to energy incredibly quickly by the body, which is a good thing in many cases (like when you need a quick burst of energy at breakfast time, provided you balance it out with things like protein), but also leads you to get hungry quickly after eating it and eat some more, causing you to get fat, and wasting your money. When your body gets used to large amounts of sugar it also starts to crave it like a drug user craves drugs.

Oh ya, it’s also in just about everything these days, especially in America. It’s not even the tasty kind that comes from sugarcane, they just use corn syrup. Thank you, corn lobby!