1.Food, like air,is essential to human beings.
2.Butsome foods can be harmful to some people.
3.The choice of food has become more and more important.

Food, like air, is essential to human beings. People usually take food, air and water as the three basic elements for human survival .Without food, humans will become weak and even die. Anyone who has suffered from hunger will understand better how important food is. You can live without a TV set, a Hi-Fi, or even a house but you can never live without food.
But some food can be harmful to some people. It is a common sense now that adults should eat food with less fat, for too much fat can cause heart diseases. Milk, butter, cheese, and meat are no longer the healthy food for many people. It seems necessary to understand more about the advantages and disadvantages of every food.
The choice of food has become more and more important. Now people are encouraged to eat more vegetables and less meat .They are also educated to choose natural and fresh food and not to think about enjoying eating only. We are told that food with less salt and less sugar is better to our body although such food may not be delicious as it used to be. All in all, every food does not suit all the people and one must choose what he should eat if he wishes to be healthy.