Junk foods

Nowadays it's very common to see street vendors selling lemon juice, guava, black berry, hog-plum, etc. covered with hot chilly spice in busy areas, especially outside schools and colleges. They utter mouth-watering words about these things, that they are very good on a hot sultry day and provide us with lots of essential vitamins and minerals. They can easily convince the school-going kids who are very delighted to have a taste of such foods. But nobody even wonders how they prepare their foods. Sometimes there are flies squirming in the foods and sometimes we can find dust particles in those popular junk foods. We, the students, have read a lot about balanced diet but this food-list does not mean eating contaminated things.
All in all, we should be cautious about our health.