As we all know, smoking is harmful to health. But few people know that eating too much sugar is as dangerous as smoking. Though the sweet food may taste delicious, it can also cause a lot of problems for your body including your skin. "Sugar causes inflammation (炎症) in the body," said Dr. Saya Obayan. "When you eat a lot of sugar, the sugar goes directly to your gut (消化道), enters your bloodstream, and then leads to inflammation." Too much sugar can also cause other skin problems. And if you are worried that your skin is aging, avoiding eating sugar is your best choice. But avoiding eating sugar may be a difficult task for someone. The good news is that you needn't completely (完全地) avoid sugar to make your skin look great. You just need to pay attention to where it's coming from. "There is a difference between added sugar and the sugar that is naturally found in foods such as fruits and vegetables," said Jaliman. The sugar in foods is healthier because it adds nutrients (营养物) to your diet. So it's necessary to eat more fruits and vegetables in our daily life. How to reduce the intake of added sugar? If you go shopping, you'll quickly know how much sugar is added to foods when you look at ingredients lists (成分表).