Write a letter to Josh explaining why it is very unhealthy to eat fast food?

junk food=fast food

dear Josh,

as you know, junk food is very popular nowadays. It's cheap and tasty, but there are a lot of disadvantages of eating such food, for example, you'll get fat because of the large amount of calories, besides if you eat fast food very often you'll have stomach ache and other illnesses. By the way, if you want to be in a good shape you should eat only healthuy food such as:vegetables, meat and fruit.

Well, i think if you want to be healthy, strong, keep fit and do not want to spoil your health, you won't eat to much junk food and drink harmful drinks and you'll lead a healthy lifestyle.