Eat health food or healthy food?

Not quite.

Eat healthy food. Sometimes busy students forget to eat. Students need food for good health. Do not eat junk food that could make you sick.

The above is gramatically correct but not very formal. I would suggest:

Students should eat healthy food to remain fit and well. Sometimes busy students forget to eat or eat too much junk food, which could make them sick.

forlan:

(1) Yes, "healthy food" is "good" English.

(2) But some people say that for "perfect" English, we should say, "healthFUL FOOD."

(3) Some people feel that it is better to use "healthy" when referring to people: You look healthy.

Thank you.

thank you

Wow The above para is now soundly correct with awesome grammer.
Thanks Anonymous