In what way can consumers change their eating habits?

To begin with, people can only change their diet if they really want to. The worst problems when facing food habits are quality and frequency rather than quantity. If a person wants to keep healthy and fit, he should worry about what to take and when instead of how much.

The point is, we should eat a balanced diet, with plenty of vegetables, a good deal of fruit, quite a lot of fish,enough milk and dairy products, some pasta, bread and rice, some meat and a bit of fat and sugar from crisps, chocolates and candies. In fact, obesity and weight-gain have much to do with an abuse of fattening food, such as processed food, whereas natural products are normally healthier.
Apart from the kind of food, it is also important to eat five times a day, and to avoid doing it between meals. A heavy breakfast and a decreasing quantity to reach a light supper before going to sleep would be highly beneficial, too.
To sum up, eating habits need more balance than drastic changes. After all, keeping fit is more a matter of continuity than one of punctual sacrifice.