Do you enjoy eating hamburgers, hot dogs, French fries and chips? Do you like soft drinks, candy and ice cream? If your answers are "yes", please take care. They are junk food (垃圾食品）！
What is junk food? Junk food has lots of fat, salt and sugar, but few nutrients. Most scientists (科学家）say junk food is unhealthy. Junk food has been popular (受欢迎的）in the world for many years. Why? First, it is cheap to make. Second, it is quick and easy for people to eat. Third, most junk food has food additives (添加剂）, so it looks and tastes better, and people can keep it for a long time. Junk food is bad for health. Eating too much junk food may bring some health problems.
It's OK to have junk food now and then (时不时地）. How often should you have it? If you are too fat, you should eat little junk food. If you are not overweight, you can have some after you have enough milk, fruit, vegetables and bread.
